tag:blogger.com,1999:blog-82044244669244991632024-03-13T22:21:05.469-07:00iNATURALPHYSICSTrying to Look into the Natureiphysicshttp://www.blogger.com/profile/07518577317978615328noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-8204424466924499163.post-44071399281334105632015-02-01T02:49:00.001-08:002015-02-01T02:49:25.197-08:00Natural Questions with Unnatural Answers!<div dir="ltr" style="text-align: left;" trbidi="on">
<div style="font-family: Times, 'Times New Roman', serif; text-align: center;">
<div class="separator" style="clear: both; text-align: center;">
<a href="https://lh5.googleusercontent.com/-Sz9egFGoLQQ/TYUQCdyKIpI/AAAAAAAAAC8/k3z_zYE8KNg/s1600/across-the-universeupload.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span" style="color: black;"><img border="0" height="102" src="https://lh5.googleusercontent.com/-Sz9egFGoLQQ/TYUQCdyKIpI/AAAAAAAAAC8/k3z_zYE8KNg/s640/across-the-universeupload.jpg" width="640" /></span></a></div>
<b><span class="Apple-style-span" style="font-size: large;"><br />
</span></b></div>
<div class="MsoNormal" style="font-family: Times, 'Times New Roman', serif; text-align: justify;">
<img alt="" border="0" src="http://www.assoc-amazon.com/e/ir?t=i088a-20&l=ur2&o=1" height="1" style="border: medium none ! important; margin: 0px ! important;" width="1" /><b><iframe align="left" frameborder="0" marginheight="0" marginwidth="0" scrolling="no" src="http://rcm.amazon.com/e/cm?t=i088a-20&o=1&p=8&l=bpl&asins=0521099064&fc1=000000&IS2=1&lt1=_blank&m=amazon&lc1=0000FF&bc1=000000&bg1=FFFFFF&f=ifr" style="height: 245px; padding-right: 10px; padding-top: 5px; width: 131px;"></iframe></b><br />
<div>
<b><span class="Apple-style-span" style="font-size: large;"><span style="font-family: Arial,Helvetica,sans-serif; font-size: small;">Good Morning</span>!</span><span class="Apple-style-span"> <span style="font-size: large;">A new day again! I got up by quarter to 6 AM and after some physical exercise I sat searching the net. Now, as it's obvious to get questions round your mind all the time; I hit upon the answer.com and soon I came across a plethora of unanswered question stuck across the page… I got interested with the nature of the questions so, I decided to look at the science questions and the first question peeking at me was "Where was science invented?" Now such questions are obviously good for your health for it lets you laugh at least 15 minutes and we everyone know the benefits of laughter… </span></span></b></div>
</div>
<div class="MsoNormal" style="font-family: Times, 'Times New Roman', serif; text-align: justify;">
<div style="text-align: left;">
<div style="text-align: justify;">
<span style="font-size: large;"><b><span class="Apple-style-span">But after humor, as it always happens, philosophy starts pouring in and I really wondered about the person asking that question… may be crazy… or he may be pretending to know the answer. We know that invention needs an inventor and the obvious question that follows is “was science invented” and who then is its inventor. The common folks would say its Archimedes or Galileo less informed ones may extol Einstein but question is did they invent science? Obviously not, inertia or gravity existed long before Galileo or Newton had discovered it. And if the fundamental constants of physics like Planck’s Constant, Velocity of Light, Charge of electron, etc, would vary even by one millionth of its present value universe as it is would not have been possible!… err…wiping out the possibility of me writing a blog in this mid noon as well. Nevertheless, things had worked out perfectly and the constants were affixed appropriate values or in technical words were “fine tuned” to keep us happy. Now physicists are on their usual rat race for churning out the answers out of some bizarre mathematics of what they call “string theories” (for your information this string has already died in the hands of a membrane). They have speculated that geometries of space may be the reason behind the constants and have consoled us telling that we live in one of the most probable universes; which has got no experimental backups! Well, it is said too much philosophies spoil the broth! But the question made me think… </span></b></span></div>
<span style="font-size: large;"><b><span class="Apple-style-span"><br />
</span></b></span><br />
<span style="font-size: large;"><b><span class="Apple-style-span"><br />
</span></b></span></div>
</div>
<div class="MsoNormal" style="font-family: Times, 'Times New Roman', serif; text-align: justify;">
<div style="text-align: left;">
<div style="text-align: justify;">
<span style="font-size: large;"><b><span class="Apple-style-span">The next candidate was enough challenging it came with a straight face “How did Edwin Hubble Change the World?” Now, interestingly the sun rises from the east before and after Hubble; positions of the galaxies and stars have not altered since then, neither had he turned the world into a sci-fi mumbo jumbo. Well, microscopically he had added a few more entropy like every living system does (in that respect he hasn’t changed the world more than a hippo or the bacteria) perhaps with a few more additions to the global population kitty. Yet he had changed the world and he changed it almost completely. He is credited with demonstrating the first flaw in Einstein’s General Relativity Field Equations which Einstein had himself admitted as the biggest blunder of his life. </span></b></span></div>
<div class="separator" style="clear: both; text-align: center;">
<span style="font-size: large;"><b><a href="http://www.madtomatoe.com/wp-content/uploads/2008/02/across-the-universe.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="http://www.madtomatoe.com/wp-content/uploads/2008/02/across-the-universe.jpg" height="260" width="320" /></a></b></span></div>
<span style="font-size: large;"><b><span class="Apple-style-span"><br />
</span></b></span></div>
</div>
<div class="MsoNormal" style="font-family: Times, 'Times New Roman', serif; text-align: justify;">
<div style="text-align: left;">
<span style="font-size: large;"><b><span class="Apple-style-span"><br />
</span></b></span><br />
<div style="text-align: justify;">
<span style="font-size: large;"><b><span class="Apple-style-span">Well, so what did Hubble actually do? To understand his discovery let us take the example of a whistling train (hey brat how whistling train jumps into our cosmological discussion…hold your breath soon you’ll get to know). Did you ever notice that a whistling train running towards you? You may have observed that its shrillness increases or if it recedes away its shrillness decreases. That is the frequency of the sound depends upon the relative velocity of the train and you (i.e. source and observer), it increases if the source moves towards the observer and decreases if it recedes away.</span></b></span></div>
<iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.youtube.com/embed/Kg9F5pN5tlI?feature=player_embedded' frameborder='0'></iframe><span style="font-size: large;"><b><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.youtube.com/embed/ly0Luc2AdoU?feature=player_embedded' frameborder='0'></iframe><span class="Apple-style-span"></span></b></span><br />
<span style="font-size: large;"><b><span class="Apple-style-span"><br />
</span></b></span><br />
<div style="text-align: justify;">
<br />
<span style="font-size: large;"><b><span class="Apple-style-span">This is called Doppler Effect in sound. Similar effect is noticed in case of light waves too with a little modification, known as Doppler Effect in light. Now as shrillness is an effect of frequency in sound similarly color is the effect of frequency in light waves. So if a light source moves away from us we must observe decrease in frequency of the light.</span></b></span></div>
</div>
</div>
<div class="MsoNormal" style="font-family: Times, 'Times New Roman', serif; text-align: justify;">
<div style="text-align: justify;">
<span style="font-size: large;"><b><span class="Apple-style-span">This is the Electromagnetic Spectrum (it is the broader classification of waves that contains light waves. </span></b></span><br />
<a name='more'></a><span style="font-size: large;"><b><span class="Apple-style-span"> </span></b></span></div>
<div style="text-align: left;">
<span style="font-size: large;"><b><span class="Apple-style-span"><br />
</span></b></span></div>
</div>
<div class="MsoNormal" style="font-family: Times, 'Times New Roman', serif; text-align: justify;">
<div style="text-align: left;">
<div class="separator" style="clear: both; text-align: center;">
<span style="font-size: large;"><b><a href="https://lh4.googleusercontent.com/-0IMg9HtecwY/TXsoMR-Tv2I/AAAAAAAAAA0/CS4HRH-uJUY/s1600/ems.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://lh4.googleusercontent.com/-0IMg9HtecwY/TXsoMR-Tv2I/AAAAAAAAAA0/CS4HRH-uJUY/s1600/ems.jpg" /></a></b></span></div>
<div style="text-align: left;">
<span style="font-size: large;"> </span></div>
<b><iframe align="left" frameborder="0" marginheight="0" marginwidth="0" scrolling="no" src="http://rcm.amazon.com/e/cm?t=i088a-20&o=1&p=8&l=bpl&asins=9812813756&fc1=000000&IS2=1&lt1=_blank&m=amazon&lc1=0000FF&bc1=000000&bg1=FFFFFF&f=ifr" style="height: 245px; padding-right: 10px; padding-top: 5px; width: 131px;"></iframe></b><br />
<div style="text-align: justify;">
<span style="font-size: large;"><b><span class="Apple-style-span">And we can see that the red light has got the lowest frequency while the violet has got the highest frequency in the visible band of electromagnetic waves (light). So we expect the light from a heavenly body moving away from us would appear reddish. This is what Hubble had discovered in distant galaxies and stars by his long research and extremely precise observations of the cosmos; he found that the galaxies are receding away from us and he also found that further they are from the earth faster is their speed. He found an astonishing result that after certain distance known as the Hubble’s Radius, the speed of receding galaxies increases beyond the velocity of light and light or radiation beyond Hubble’s radius would never reach earth, no matter how long one waits because light would never get the time to reach earth. Thus, what happens beyond Hubble’s radius will be left unknown.</span></b></span></div>
</div>
<div class="separator" style="clear: both; text-align: center;">
<span style="font-size: large;"><b><a href="https://lh3.googleusercontent.com/-Bgu92XcAyMU/TXsnijOZr4I/AAAAAAAAAAw/qSZJIcb5mD8/s1600/Redshift_red.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span class="Apple-style-span"><img border="0" height="489" src="https://lh3.googleusercontent.com/-Bgu92XcAyMU/TXsnijOZr4I/AAAAAAAAAAw/qSZJIcb5mD8/s640/Redshift_red.jpg" width="640" /></span></a></b></span></div>
<div style="text-align: left;">
<span style="font-size: large;"><b><span class="Apple-style-span"><br />
</span></b></span></div>
</div>
<div class="MsoNormal" style="font-family: Times, 'Times New Roman', serif; text-align: justify;">
<div style="text-align: justify;">
<span style="font-size: large;"><b><span class="Apple-style-span">This was the tremendous achievement of Hubble he showed us “infinite and static universe” was actually finite and increasing. Did humans ever wonder or even speculate such result even philosophically? Well, there’s an oriental philosophy called Vedanta and one of its schools “The Qualified Vedanta” predicted not only expansion but also contraction of the physical universe about 2000 years ago!</span></b></span><br />
<span style="font-size: large;"><b><span class="Apple-style-span"> </span></b></span></div>
<div style="text-align: left;">
<span style="font-size: large;"><b><span class="Apple-style-span"><br />
</span></b></span></div>
</div>
<div class="MsoNormal" style="font-family: Times, 'Times New Roman', serif; text-align: justify;">
<div style="text-align: left;">
<div class="separator" style="clear: both; text-align: center;">
<span style="font-size: large;"><b><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.youtube.com/embed/hVApTLE7Csc?feature=player_embedded' frameborder='0'></iframe></b></span></div>
<iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.youtube.com/embed/fgg2tpUVbXQ?feature=player_embedded' frameborder='0'></iframe><span style="font-size: large;"><b><span class="Apple-style-span"></span></b></span><br />
<span style="font-size: large;"><b><span class="Apple-style-span"><br />
</span></b></span><br />
<div style="text-align: justify;">
<br />
<br />
<br />
<br />
<br />
<br />
<span style="font-size: large;"><b><span class="Apple-style-span">Hubble’s demonstration has changed the whole of cosmology. It led to the correction of Einstein’s General Relativity Field Equations, cosmological models like Friedman Universe, Big Bang Theory, Steady State theory, etc, out of which Big Bang theory is the most promising candidate. Recently, it has been able to verify its prediction of Cosmological Microwave Background Radiation (CMBR) with the cosmological observations. <span style="font-size: x-small;"> </span></span></b></span><br />
<br />
<span style="font-size: large;"><b><span class="Apple-style-span"><span style="font-size: x-small;"><img alt="" border="0" src="http://www.assoc-amazon.com/e/ir?t=i088a-20&l=btl&camp=213689&creative=392969&o=1&a=0521099064" height="1" style="border: medium none ! important; margin: 0px ! important; padding: 0px ! important;" width="1" /></span></span></b></span></div>
<div style="text-align: justify;">
<span style="font-size: large;"><b><span class="Apple-style-span"> </span></b></span></div>
</div>
</div>
<div class="MsoNormal" style="font-family: Times, 'Times New Roman', serif; text-align: justify;">
<div style="text-align: left;">
<div style="text-align: justify;">
<span style="font-size: large;"><b><span class="Apple-style-span">Well, my tea is ready, hot and fuming and cheers Mr. Hubble good work!</span></b></span></div>
<br />
<iframe align="left" frameborder="0" marginheight="0" marginwidth="0" scrolling="no" src="http://rcm.amazon.com/e/cm?t=i088a-20&o=1&p=8&l=bpl&asins=0521099064&fc1=000000&IS2=1&lt1=_blank&m=amazon&lc1=0000FF&bc1=000000&bg1=FFFFFF&f=ifr" style="height: 245px; padding-right: 10px; padding-top: 5px; width: 131px;"></iframe></div>
</div>
</div>
iphysicshttp://www.blogger.com/profile/07518577317978615328noreply@blogger.com0tag:blogger.com,1999:blog-8204424466924499163.post-66764428392210635482011-05-28T13:18:00.000-07:002011-12-04T03:22:29.978-08:00Of Waves, Physics and Tsunami<div dir="ltr" style="text-align: left;" trbidi="on"><div dir="ltr" style="text-align: left;" trbidi="on"><div class="separator" style="clear: both; text-align: center;"></div><div class="separator" style="clear: both; text-align: center;"><i><a href="http://3.bp.blogspot.com/-lKW6FopkoFU/Tb8EJ2XwueI/AAAAAAAAAEs/CMEck_5v1eQ/s1600/tsunami3.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="http://3.bp.blogspot.com/-lKW6FopkoFU/Tb8EJ2XwueI/AAAAAAAAAEs/CMEck_5v1eQ/s1600/tsunami3.jpg" /></a></i></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><i><br />
</i></div><span style="font-size: 14pt;">6 hours has already been over and we are breathlessly waiting for that ruthless wave and Goofy is busy making plans for surfing the wave, err…to Goof up with his life this time and letting him know of the Physics behind Tsunami seems the only way to deter him from surfing the Tsunami.</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Goofy: “Tsunami is a water wave right? Water waves that I have surfed for at least 15 years now… What’s the difference?... The difference exists only in name?”</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Me: “Not at all, as I have already told you Tsunami is a water wave that is formed due to displacement of a large amount of water. Such voluminous displacement is generally effected by an underwater earthquake, landslides or meteorite impacts.</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">The expected Tsunami for which we are on high alert is due to an underwater earthquake of magnitude 9. So let’s look into the details of Tsunamis generated by earthquakes.</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Everything begin with energy, we walk, talk, jump, air flows, strings vibrate, waves occur… all are but manifestation of energy. Recall the string experiment you have performed with Jane… remember you had to use your energy to produce waves in the string? </span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Goofy: “Yep, I do.”</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Me: “So if Tsunami is a wave there must be an energy source to let it happen. Yes, this energy is provided by the earthquake. </span></div><i><span style="font-family: Georgia,"Times New Roman",serif; font-size: small;"> </span></i><br />
<div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><i><span style="font-family: Georgia,"Times New Roman",serif; font-size: small;"> </span></i><br />
<div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><u><span style="font-size: large;"><b>Cause of Earthquake</b></span></u><br />
<u><span style="font-size: large;"><b><br />
</b></span></u></div><i><span style="font-family: Georgia,"Times New Roman",serif; font-size: small;"> </span></i><br />
<i><span style="font-family: Georgia,"Times New Roman",serif; font-size: small;"> </span></i><br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><i><a href="http://2.bp.blogspot.com/-SAGB0BOdTcI/TeFVQ1uXbEI/AAAAAAAAAE4/e9uaDg06z5s/s1600/Fig1.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="345" src="http://2.bp.blogspot.com/-SAGB0BOdTcI/TeFVQ1uXbEI/AAAAAAAAAE4/e9uaDg06z5s/s640/Fig1.jpg" width="640" /></a></i></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><i><u>Fig. 1. Earth's Crust and Plates</u></i></td></tr>
</tbody></table><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Earth has got hot magma inside and the solid crust where we live is actually composed of various “plates” which happen to float on the liquid magma ocean. The boundaries of plates are active volcanic activity sites. Activities of magma like contraction due to cooling, percolation of water into the hot zone etc, builds up of pressure within the rocks leading to movement of the various plates. The plates collide and pressure keeps on mounting in the rock strata. See the figure.</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Now Earthquake takes place because of building up of such pressure (stress) within the rock strata inside the earth’s crust until they are deformed (strained) to a point (breaking stress) beyond which they would break causing a mass movement and release of a tremendous energy (shown by the blast symbol in the diagram).</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">The Point at which such break occurs is called the focus which is inside the crust and the point just above the focus on the surface of the earth is known as the epicenter. See the diagram. </span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Now Tsunami is a vast subject, so let us divide its study into two broad parts </span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">1. Formation of Tsunami </span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;"> 1.1. Energy of Earthquake and Tsunami.</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;"> 1.2. Comparative Energy Output Study.</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">2. Propagation of Tsunami</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;"> 2.1. The Restoring force and Gravity waves</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;"> 2.2. Tsunami in Deep, Intermediate and Shallow waters</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;"> 2.3. Wave Shoaling Process and destruction.</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;"> 2.4. Linear Wave Theory. </span></div><i><span style="font-size: small;"><b>. </b></span></i><br />
<i><span style="font-family: Georgia,"Times New Roman",serif; font-size: small;"> </span></i><br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><i><a href="http://4.bp.blogspot.com/-2gxBoOjw1To/TeFXFLlGY7I/AAAAAAAAAFA/UNRWvPaDhu4/s1600/formation_of_Tsunami.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="640" src="http://4.bp.blogspot.com/-2gxBoOjw1To/TeFXFLlGY7I/AAAAAAAAAFA/UNRWvPaDhu4/s640/formation_of_Tsunami.jpg" width="594" /></a></i></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><i><u>Fig. 2. Tsunami Formation</u></i></td></tr>
</tbody></table><div class="separator" style="clear: both; text-align: center;"><i><a href="http://2.bp.blogspot.com/-ewCldQVeZ04/TeFWOYkaFGI/AAAAAAAAAE8/iwRoZG77vPs/s1600/fig3.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"> </a></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><i><span style="font-family: Georgia,"Times New Roman",serif; font-size: small;"> </span></i><br />
<div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><u><span style="font-size: large;"><b>1. Formation of Tsunami</b></span></u></div><i><u><span style="font-size: large;"><span style="font-family: Georgia,"Times New Roman",serif;"> </span></span></u></i><br />
<div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><i><span style="font-family: Georgia,"Times New Roman",serif; font-size: small;"> </span></i><br />
<div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">When an earthquake occur underwater tremendous amount of energy is released between the plates, this energy (most intense at the epicenter) may be released in lot of forms like heat generated between the strata, sound energy, displacement of land mass etc, but a part of this energy is associated in giving a specific upthrust (force) to the water column above the sea bed causing a displacement of the water column. This initial lump of water displaced is sometimes called “Waterberg” in analogy with iceberg. </span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Since this actually is a mass of water raised to a height h (see the figure) against the gravitational force of earth, potential energy (</span><i style="mso-bidi-font-style: normal;"><span style="font-family: "Cambria Math","serif"; font-size: 14pt;">mgh</span></i><span style="font-family: "Cambria Math","serif"; font-size: 14pt;">)</span><span style="font-size: 14pt;"> is built up. This energy is transmitted via ocean waves known as Tsunami.”</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Goofy: “How great is that energy? I mean it seems too low for a Waterberg to cause such a massive destruction to the coasts which is even impossible for some greatest storms too.”</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">Me: “Okay very nice question Goof </span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><span style="font-size: 14pt;">So you must be quite unaware of the amount of energy released by an earthquake. Let us see to it…</span></div><div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0in; text-align: justify;"><br />
</div><div class="MsoNormal"><span style="font-size: 14pt; line-height: 115%;">(To be continued…)</span></div><i><br />
</i></div>iphysicshttp://www.blogger.com/profile/07518577317978615328noreply@blogger.com0tag:blogger.com,1999:blog-8204424466924499163.post-64299289861214561852011-05-02T13:15:00.000-07:002011-12-22T09:30:26.026-08:00Of Waves, Physics and Tsunami<div dir="ltr" style="text-align: left;" trbidi="on"><br />
<div class="separator" style="clear: both; text-align: center;"><a href="http://3.bp.blogspot.com/-lKW6FopkoFU/Tb8EJ2XwueI/AAAAAAAAAEs/CMEck_5v1eQ/s1600/tsunami3.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="216" src="http://3.bp.blogspot.com/-lKW6FopkoFU/Tb8EJ2XwueI/AAAAAAAAAEs/CMEck_5v1eQ/s640/tsunami3.jpg" width="640" /></a></div><div class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><br />
</div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">“Hee Haw!” Enters Goofy Crackedjaw… He must have made an adventure with his surf-boat today. </span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">“Hey guys! Dare to surf a 40 feet giant wave? None of you have that damned guts.”</span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Jane: “How stupid! I look better with my jaws intact rather than to have odd guts to sacrifice it for a poor wave.” </span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy had his jaws cracked when he was tossed into a shore rock riding a big wave… he is a talented surfer but sometimes he underestimates the power of a wave and overestimates his skills. So we call him Crackedjaw Goofy.</span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “You’ll never get that ‘out of earth’ experience ‘messedup Jane’… what you cooked today cockroaches for chicken?”</span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Oh yes! Jane is a girl of 18, she studies physics and known for making mess in the kitchen, in the market place… as her mom says “she has always been so nice, talented… err… but messy, like once she had poured gasoline in the flower tubs and water in the car!” </span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Jane: “You’ll have to pay for your sins Goofy; I warn you, don’t jeer at me that way.”</span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Guys stop fighting; I have got news for you mates” </span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Jane: “Hey what’s that… Has another Goofy died surfing a wave?”</span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Come-on Jane, spare him now… Do you know our coasts are on high alert for Tsunami? Forecasters are expecting a tsunami within 12 hours.” </span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “Hey Jane I’ll mark a new world record surfing the Tsunami… it’s your last chance to meet a celeb Jane. I’m ready with my boat let that tsunami come”</span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Beware Goofy! This time you may Goof up with your life … It is not a wave that can be surfed, we must move highlands for safety.”</span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “Well, I’ve surfed giant waves taller than a 5 storey building… and what the hell is tsunami?…”</span></i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0in; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: "Helvetica Neue",Arial,Helvetica,sans-serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: Tsunami is a wave.</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><script type="text/javascript">
google_ad_client = "pub-3465427943988858";
google_ad_width = 468;
google_ad_height = 15;
google_ad_format = "468x15_0ads_al";
google_color_border = "FFFFFF";
google_color_bg = "FFFFFF";
google_color_link = "0000FF";
google_color_text = "0000FF";
google_color_url = "0000FF";
</script><script src="http://pagead2.googlesyndication.com/pagead/show_ads.js" type="text/javascript">
</script><br />
<table cellpadding="0" cellspacing="0" style="font-family: Georgia,"Times New Roman",serif;"><tbody>
<tr> <td><div><div class="MsoNormal"><i><span style="font-size: large;"><span style="color: #365f91;"><br />
</span></span></i></div></div></td> </tr>
</tbody></table><div style="font-family: Georgia,"Times New Roman",serif;"><i><span style="font-size: large;"> </span><span style="font-size: large;">What is Tsunami?</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Tsunami is a water wave that is formed due to displacement of a large amount of water. Such voluminous displacement is generally affected by an underwater earthquake, landslides or meteorite impacts. </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Well, for Jane such definitions won’t work as she likes more formal definitions so to put it for her: A tsunami is a shallow water gravity wave that has a large wavelength and small amplitudes in deep water, however, as the wave moves to shallow water the speed of the wave decreases and its amplitude increases tremendously. </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Behavior of these waves is greatly different from the wind waves or the normal sea waves that surfers usually encounter. </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Jane: “I see, this definition sounds familiar; I have read about water waves in deep seas and their behavior in the shallow water. They are mostly non-linear waves.” </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “Big Words! So what the hell I’m doing here it is better I wait for the high waters in the sea.”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Hey Jane don’t go that deep coz you know our good friend Goofy is a surfer…he likes to stay on the surface… and big words make him sink… :D”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “Not like that… I am interested in learning stuffs provided they be put in plain… not like Jane’s geeky words. Okay, now what causes Tsunami, how do they propagate and how are they dangerous”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Good questions Goof… well first you must know what a wave is… that is physicist’s wave”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “Ok what actually is a wave then?”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “A wave is a periodic disturbance. That means the motion/disturbance would repeat itself after an interval of time.” </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Even a child knows how to draw a wave, the difference between physicist’s wave and a child’s wave is: physicists give the waves and its parts some names (known as wave profile) and they try to relate the various parts mathematically for calculation purposes; that makes it appear alien. </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div align="center" class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: center;"><i><span style="font-size: large;"> </span></i></div><div class="separator" style="clear: both; font-family: Georgia,"Times New Roman",serif; text-align: center;"><i><a href="http://4.bp.blogspot.com/-WkxzsO613To/Tb8E1ht0qtI/AAAAAAAAAEw/PTYwCa6pLN8/s1600/achild%2527swave.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="http://4.bp.blogspot.com/-WkxzsO613To/Tb8E1ht0qtI/AAAAAAAAAEw/PTYwCa6pLN8/s1600/achild%2527swave.jpg" /></a></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Quantities like wave length, Amplitude or the maximum wave height, frequency or the number of vibrations made in 1 second, phase etc are called wave profile.” </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;"> </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;"><u>A Physicist’s wave:</u> </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div align="center" class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: center;"><i><span style="font-size: large;"> </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><a href="http://2.bp.blogspot.com/-Zoa6HMzgvWg/Tb8FOfiExLI/AAAAAAAAAE0/0DaXXgqtVX0/s1600/phywave.jpg" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="http://2.bp.blogspot.com/-Zoa6HMzgvWg/Tb8FOfiExLI/AAAAAAAAAE0/0DaXXgqtVX0/s1600/phywave.jpg" /></a><span style="font-size: large;">Goofy: “I see, it’s so simple… I am gonna read all of Jane’s books”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Jane: “Someone had rightly said ‘A little knowledge is a dangerous thing’”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Guys calm down. Well, let’s see how a wave is generated… so that we can understand the mechanism of Tsunami generation. Goof and Jane hold on the ends of this 5 meter string, and then one of you shake it up and down… what can you see?”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “Yoo! I can see a wave in the string moving towards Jane.” </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Jane: “Goofy can you say what is moving towards me here?”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “I am not a retard not to know the answer for such kinky questions.”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Goof! Answer her; this would let you know a lot about waves.”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “KK, simple the wave is moving I can’t see any other objects to be moving towards Jane… do I? Yep, I can see the string move vertically up and down” </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Great, a good observation from Goofy, the particles of string are moving up and down but are not moving forward towards Jane. This means particles of the medium (here it is string) under the influence of the wave don’t move forward with the wave. Thus, what moves through the wave is the energy.”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “Energy?”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Yes, energy, the ability to do work… see you have got the ability to move the string up and down this is evident as your hand is moving up and down but can you see this up and down motion has reached at Jane’s end of the string, thus your ability of making the string move up and down or doing the work is being transferred at Jane’s end of the string via waves. Thus, waves transfer energy.” </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “I see; it’s simple.” (Jane Frowns)</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Ok Goof, just match the waves in the string with the physicist’s wave and try to identify the wave profile: amplitude, wavelength, frequency. And draw them on a paper.”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “I have got a question…well it seems that waves don’t carry the particles of the medium along with it… but from my experience as a surfer quite a lot of times I have seen waves to carry a good deal of water forward with it. How would you explain this?”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Jane: “It’s simple… okay have you seen the water brought by the waves recedes away with the wave too? A sea wave is a lot more complicated than string wave… in string the particles of the string are seen moving up and down that is moving perpendicular to the direction of motion. But in sea waves the particles of motion move in circles or ellipses, that is you may say it is a combination of vertical up and down movement with horizontal to and fro movement. So we can see sea waves moving up and down and still brings water with it.”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Exactly, but it is also possible that the particles of motion never get back to the actual positions after course of the wave… These are non linear waves… a bit complicated for you to learn just now Goof.” </span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “Okay! So it needs a good deal of knowledge to understand Tsunamis.”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Me: “Yes, because water waves are far more complicated than other forms of waves like light etc.”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Jane: “So Goofy drop your idea for surfing Tsunami of which you don’t know at all.”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;">Goofy: “Okay as you say.”</span></i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><br />
</i></div><div class="MsoNormal" style="font-family: Georgia,"Times New Roman",serif; line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><i><span style="font-size: large;"> He heard to her for the first time.</span></i></div><div class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><br />
</div><div class="MsoNormal" style="line-height: normal; margin-bottom: 0.0001pt; text-align: justify;"><span style="font-size: large;"><b>To be continued… </b></span></div></div>iphysicshttp://www.blogger.com/profile/07518577317978615328noreply@blogger.com0tag:blogger.com,1999:blog-8204424466924499163.post-15403553942648948892011-03-29T11:48:00.000-07:002011-12-23T10:24:10.392-08:00Kitchen Physics And The World Around Us<div dir="ltr" style="text-align: left;" trbidi="on"><div class="separator" style="clear: both; text-align: center;"><a href="http://1.bp.blogspot.com/-PuT3_RlNWd4/TZmksswKQPI/AAAAAAAAAEI/s6PcjMc1skg/s1600/upload.jpg.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="126" src="http://1.bp.blogspot.com/-PuT3_RlNWd4/TZmksswKQPI/AAAAAAAAAEI/s6PcjMc1skg/s640/upload.jpg.jpg" width="640" /></a></div><div class="separator" style="clear: both; text-align: center;"><b></b></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><br />
<b><span style="font-family: Times,"Times New Roman",serif; font-size: large;"> I</span>n the last blog you must have met with our “peaceful” Dragon. She loves cooking but she is bothered all the time by the failing appliances of her kitchen that I have to mend always (poor me) and I let her know of the kitchen physics that keeps me safe:D. </b></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><br />
<span style="font-size: large;"><b>Me: "<i>Good Morning Dragon! Is everything okay?</i>" </b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>Yup</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>It seems you are in a hurry. What’s up?</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>I am late and I’ll have to reach office soon and today everything was so messed up plus I suffered an electric shock</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Aw, why? What messed up?</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>My water heater, I shouldn’t have used this old wicked thing.</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Okay I’ll see to it but why are you stirring your nonstick pan so vigorously with steel spoon, it might damage it.</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>Why non stick cookware should not be stirred with steel spoons?</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>See Dragon, Nonstick cookware is made of aluminum and related alloy very much like ordinary cookware, but what makes them different is the special coating of Teflon on its surface. Teflon is a polymer and not metal which is very stable towards high temperature and it gives the cookware the property of non stickiness. </i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b><i>If nonstick cookware be stirred with steel spoons, steel being harder than Teflon puts scratches on it and with time the Teflon coating wears away thus the “non stick” property of the nonstick goes and it becomes useless."</i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: "<i>Um okay, but how is hardness related to the scratches made?"</i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: "<i>Good question Dragon; a hard substance can produce scratches on a soft substance. Let us for example take the instance of our finger nails and wax…can you tell me which one is harder?"</i></b> </span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>Obviously our finger nail; mine is harder than yours though.</i>” </b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>(Dragon smiled victoriously). </b></span><br />
<a name='more'></a></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b><a href="http://3.bp.blogspot.com/-qhfEKOpGP7s/TZDw6gphrNI/AAAAAAAAADU/evhlBWpBVO0/s1600/Mohs-Scale2.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="http://3.bp.blogspot.com/-qhfEKOpGP7s/TZDw6gphrNI/AAAAAAAAADU/evhlBWpBVO0/s1600/Mohs-Scale2.png" /></a>Me: "<i>Have you ever noticed Dragon that our fingernails can mark scratches on wax? Well, can wax mark scratches on our fingernails? No, because harder scratches softer. In fact physics measures hardness of a substance in comparison with another on the basis of scratches made by one on the other and a scale for measuring hardness of minerals exists by the name Mohs scale. The scale is arranged in ascending order of hardness comprising 1-10 indexes. Softer ones like Talc has a position 1 and the hardest ones like diamonds have 10 on Mohs scale. The scale is simple: the higher members on the scale can mark scratches on the lower ones</i>."</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>Is diamond harder than steel?</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Yes diamond is way harder than steel is, it’s harder than glass too, and that is why diamond marks scratches on glass</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>Don’t make me crazy, glass can’t be harder than steel I can prove it just now…</i>” </b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Oh no Dragon! Please do not prove it now, let me explain… What we see or believe with common sense may be wrong; physics says glass is harder than steel because glass stands at 6 whereas steel is only at 4.5 on Mohs scale. We are sometimes tempted to assume glass softer than steel because we are misled by its high brittleness in contrast with steel’s high elasticity. Steel is obviously stronger than glass but glass is harder than steel.</i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b><i>Seems like a paradox? It would be easily resolved if we understand the following rule. </i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b><i>That is in physics “strong” refers to a substance’s high elasticity i.e. its ability to restore to its original state after getting deformed by a force whereas “hard” refers to a substance's scratching ability</i> <i>or its molecular/atomic bond strength.</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>Good! I have learnt a new stuff and I’m happy coz I have got a pair of diamond rings</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Then I started inspecting her water heater and found that it had no grounding with it. </b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Hey! Dragon throw away your dangerous water heater, it may prove fatal someday.”</i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon:<i> “Yes I am going to put it right out of my doors but can you tell me what the problem with it is?</i>” </b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “It has got no grounding connection.”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>What is grounding (earthing)? Is it necessary? If so why</i>?"</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Grounding is a connection of the exposed metal parts of electric appliances with the earth. Have you ever noticed a 3-pin electric plug? The topmost pin is the grounding pin. </i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b><i>Yes Dragon, grounding is very much necessary and it can be life saving at times because it prevents contacts with hazardous voltages that one may come across in case of insulation failure and short circuits by transferring the current directly to earth instead of making it travel through the person's body. </i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b><i>Moreover, grounding protects electronic equipments like computers etc from static electricity and also from the danger of lightning bolt using lightning conductors.</i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b><i>So Dragon, before buying any electrical equipment check whether it has got adequate ground connectivity (a 3-pin plug means it has ground connectivity)</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>O my God! I will burn those cheap factories that make non standard devices.” </i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b><i>Me: “That’s like a good Dragon!</i>”:D</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>Now I am too afraid to buy electric devices but I have bought this new oven last week, it is some magic because it does not have any heating filament nor it has got any microwave facility. The dealer told me it is a techie marvel called Induction Oven. Can you tell me whether it is safe and how it works?</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Induction ovens aren’t a technological marvel compared to microwave ovens and I can see it is quite safe to use because it has got a good ground connection too. But it’s working although simple needs a deeper understanding on a branch of physics called electrodynamics</i>. </b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><div class="separator" style="clear: both; text-align: center;"><span style="font-size: large;"><a href="http://3.bp.blogspot.com/-n1NKYC53yBA/TZHx03P8duI/AAAAAAAAADY/KhiOp82VKd0/s1600/kuppersbusch-induction-wok-cooktop.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="274" src="http://3.bp.blogspot.com/-n1NKYC53yBA/TZHx03P8duI/AAAAAAAAADY/KhiOp82VKd0/s320/kuppersbusch-induction-wok-cooktop.jpg" width="320" /></a></span></div><div style="text-align: justify;"><span style="font-size: large;"><a href="http://3.bp.blogspot.com/-SgGiYUQ5w9U/TZHz9vVzYkI/AAAAAAAAADc/D75pc9oseEk/s1600/title.jpg" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="24" src="http://3.bp.blogspot.com/-SgGiYUQ5w9U/TZHz9vVzYkI/AAAAAAAAADc/D75pc9oseEk/s320/title.jpg" width="320" /></a><b><i>Let me explain how it works. See it has been found that if a magnet be moved very fast in to and fro motion near a metal plate it generates a circling current in the plate, this is known as eddy current. Now if this eddy current is allowed flow for sometime, heat is developed in the metal plate. As because it is impossible to move a magnet such fast; a similar effect of changing magnetic field is generated by letting AC current flow through a copper coil which is placed inside the oven. Eddy currents </i></b><b><i>get developed in metallic cooking utensils (favorably ferromagnetic) placed above the induction oven and gets heated. </i></b></span></div></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><br />
</span><br />
<div class="separator" style="clear: both; text-align: center;"><span style="font-size: large;"><a href="http://4.bp.blogspot.com/-MdajFvFSyck/TZH2bsLcewI/AAAAAAAAADg/rpL0zEQikTA/s1600/inside+an+induction+cooker.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="291" src="http://4.bp.blogspot.com/-MdajFvFSyck/TZH2bsLcewI/AAAAAAAAADg/rpL0zEQikTA/s320/inside+an+induction+cooker.jpg" width="320" /></a></span></div><div style="text-align: justify;"><span style="font-size: large;"><b><i>But Dragon you have taken a very good decision for cooking with induction oven. It is one of the most efficient cooking methods available and transfers nearly 84% of the energy to the food compared with 40% for cooking gas and 71% for conventional electrical heaters. So it is good for environment</i>” </b></span></div></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>Physics is interesting I used to hate it in my college days but I have noticed it has just leaped into my kitchen and poor me I don’t know anything.</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Aw, who says you don’t know anything? See you have learnt and understood so many things and we all must learn from someone or the other, don’t we? Cheer up Dragon a smile on your face worth a lot. (Not the Dragonic grin though :D)</i>” </b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon’s refrigerator was not working well; it was too much noisy and was not cooling properly. She asked me to inspect it and I found problem with the compressor and some turns of the compressor motor that had burnt.</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>You will have to take it to the service centre; the compressor motor has worn out.” </i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b><i>Dragon: “I don’t like failing things, the refrigerator is of good quality still and is still under warranty period.</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Refrigerator warranty generally comes under two criteria warranty on the refrigerator and its compressor. Both may have different extent of warranties too.”</i></b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon:<i> “May be I have got both, but can you tell me how a refrigerator work… is it a device to produce ice that cools things fast?</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>If refrigerator cools by producing ice then the obvious question is how it produces ice? Refrigerator doesn’t cool by producing ice but cools by evaporation and adiabatic expansion of a suitable gas called refrigerant.</i>” </b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “How come evaporation cools?”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “Okay just switch on the table fan and keep your hand in the direction of the wind, note what you feel, then wet your hand with water and then repeat the same, did u feel any difference?”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>Hey what I feel is obvious, my hand is dry and I feel colder air after wetting my hand.</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Exactly! But the air hasn’t cooled down as you know so, what did actually happen after you have wetted the hand? See the water in your wet hand has evaporated under the current of air and has taken the heat from your hand with the water vapors. With the decrease of heat on your hand you are feeling cold. Now we know that water is not a very volatile substance but if we repeat the experiment taking a very volatile substance like alcohol etc the fall in temperature is quite pronounced. It is because a volatile substance evaporates quickly and cools faster.</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>I have never thought that way; a simple evaporation drives a refrigerator! Can you tell in details? Okay but what was the other Greek term? Yes adiabatic expansion. What is that?</i>”</b></span></div><div class="separator" style="clear: both; text-align: justify;"><span style="font-size: large;"><a href="http://2.bp.blogspot.com/-NtwJ4j-0Q2Y/TZDv20Gky8I/AAAAAAAAADQ/kY-52iPe56E/s1600/Refrigerator.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="http://2.bp.blogspot.com/-NtwJ4j-0Q2Y/TZDv20Gky8I/AAAAAAAAADQ/kY-52iPe56E/s1600/Refrigerator.jpg" /></a></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Many types of refrigerators exists, the one at your home is a vapor compression type refrigerator. Here, a suitable gas for refrigeration is chosen having properties such as easily liquefiable, high, latent heat of vaporization, low specific vapor volume etc. The gas is kept liquid under pressure and is passed in through the evaporator i.e. refrigerator coils (metal pipes) where it is allowed to evaporate by expansion inside the pipes. This reduces the temperature by drawing the heat from the refrigerator by two processes viz. adiabatic expansion and temperature fall due to evaporation, producing cooling effect in the refrigerator. After evaporation, the gas is led to through pipes to the compressor pump where it is liquefied under pressure and it condenses into liquid in the condenser. This liquefaction by the compressor gives away heat and this heat is discarded from the back of the refrigerator. The compressor acts like the heart of such type of refrigerators and is driven by an electric motor, which has worn out in your case.</i>”</b></span><br />
<span style="font-size: large;"><br />
</span><br />
<span style="font-size: large;"><b> </b></span></div><div dir="rtl" style="color: #6fa8dc; text-align: left;"><span style="font-size: large;"><b><i>Thermos Flask is a good example </i></b></span></div><div dir="rtl" style="text-align: left;"><span style="font-size: large;"><i><span style="color: #6fa8dc;"><b> of Adiabatic System</b></span></i><b><br />
</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b> </b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><a href="http://1.bp.blogspot.com/-74NufF6-BEU/TZH5cmc0yjI/AAAAAAAAADk/HedT4CP0gm8/s1600/thermos-flask.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="http://1.bp.blogspot.com/-74NufF6-BEU/TZH5cmc0yjI/AAAAAAAAADk/HedT4CP0gm8/s1600/thermos-flask.jpg" /></a><b>Me: “<i>Now adiabatic expansion and adiabatic compression are very important states in physics. Dragon, have you ever noticed that cycle or car tyres get heated when inflated? This is an example of adiabatic compression. When a process is carried out in an environment (known as system) such that no heat can enter nor leave it, it is called adiabatic process. As adiabatic compression increases the temperature of the system an adiabatic expansion leads to fall in the temperature of the system. In refrigerators expansion of the gas through the expansion valve is an example of adiabatic expansion and it leads to fall in temperature.</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>So Dragon you have learnt a lot on cooling, haven’t you?</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Dragon: “<i>Yuppers! I’ve learnt a lot. So wonderful is the world of physics; I wish I were a physicist, so many things are there to learn that too in my kitchen itself.</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><span style="font-size: large;"><b>Me: “<i>Now I have a question Dragon. How do you manage to vomit fire? I know no laws that let you do this. Is it another adiabatic compression?</i>”</b></span></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><br />
</div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><b>I have not realized what blunder I’ve committed; she is a dragon means she is not to be trifled with. I’ve dared to question the mechanism of fire vomit and I’ll have to pay for my sins.</b></div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><b>At once she rose up…shifted her shape…Swore up high in the air telling me “<i>I’ll show you how</i>” I am running for my life …save my soul…see you all next week. </b><br />
<br />
</div><div style="font-family: "Trebuchet MS",sans-serif; text-align: justify;"><b><br />
</b></div></div>iphysicshttp://www.blogger.com/profile/07518577317978615328noreply@blogger.com1tag:blogger.com,1999:blog-8204424466924499163.post-67069297816518285882011-03-19T09:15:00.000-07:002011-04-03T11:15:24.972-07:00Physics in Dragon's Kitchen<div dir="ltr" style="text-align: left;" trbidi="on"><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><div class="separator" style="clear: both; text-align: center;"><a href="https://lh5.googleusercontent.com/-NSPrjiscpV8/TYTO8t9OTMI/AAAAAAAAACk/slKkDC0Qa44/s1600/100_1607.jpg.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="126" src="https://lh5.googleusercontent.com/-NSPrjiscpV8/TYTO8t9OTMI/AAAAAAAAACk/slKkDC0Qa44/s640/100_1607.jpg.jpg" width="640" /></a><span style="font-size: large;"></span></div><span style="font-size: large;"> Tomatoes, Potatoes, Oils in Kitchen, sound fine, Now what about Physics in kitchen. (This blogger must have gone crazy, he takes oven for a nuclear reactor!) Nope, I am not crazy and yes there is kitchen physics along with kitchen chemistry; Although, the later is far more popular. Now, let us turn our attention towards the Big Boss in Kitchen (<i><b>She</b></i> is no ordinary human being but a full fledged yet "peaceful" Dragon ) ...And what she has to tell us about Kitchen Physics. </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>Hey Dragon! it's late afternoon what are you innovating there there so long...is something special delicacy is to be prepared?</i>" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>Yes! delicacies are being prepared, but hey I am getting difficulties with my kitchen appliances that keep on failing all the time.</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>They must be scared of you lolz, why what's up?</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>See this time my gas lighter has failed, I wonder why... perhaps it's battery has gone out</i>" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>Lemme look at the lighter you've got... Lol your lighter don't need batteries, Now can you tell me how electric sparks are generated even if there is no batteries there</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>Because I am standing near it!! DUH</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Just look at her simplicity, she thinks it works because she is near, may be she thinks there's some hmmm factor. </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Then, I tried to explain her the Kitchen Physics about the lighter</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>See Dragon, many of us don't know that the electric sparks made by portable gas lighters are not driven by batteries. A peculiar principle of physics is associated with it, it is known as "piezoelectric property". What happens is, by the virtue of piezoelectric property some crystals like quartz tend to develop a voltage across it when it is deformed by mechanical pressure. Now such voltages can really be very high like in the order of thousands of volts. In the piezoelectric-ignition lighters a spring hammer is used to strike a quartz crystal which results in a sudden deformation of the crystal followed by a voltage of several thousand volts, this is then led to the spark knobs by connecting wires and we get sparks.</i></span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><i><br />
</i></span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><i>Look at its internal construction to know it better</i>" </span></div><div class="separator" style="clear: both; font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><a href="https://lh6.googleusercontent.com/-YN7onCBV4kE/TYSGiNAFjVI/AAAAAAAAABk/TWg9HDo9K9E/s1600/fig21-01_1-e-240x160.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" src="https://lh6.googleusercontent.com/-YN7onCBV4kE/TYSGiNAFjVI/AAAAAAAAABk/TWg9HDo9K9E/s1600/fig21-01_1-e-240x160.png" /></a></span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><a href="https://lh3.googleusercontent.com/-9NumEp8BZec/TYSGkHLii9I/AAAAAAAAABo/lmrL8m3hlio/s1600/piezoelectric-effect.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="84" src="https://lh3.googleusercontent.com/-9NumEp8BZec/TYSGkHLii9I/AAAAAAAAABo/lmrL8m3hlio/s320/piezoelectric-effect.jpg" width="320" /></a><span style="font-size: large;"></span></div><div class="separator" style="clear: both; font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon :"<i>I've understood a lot</i>"<br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><a name='more'></a><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>That's it, still I'm right coz I need to be near to strike the lighter tho</i>" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><div class="separator" style="clear: both; text-align: center;"><a href="https://lh6.googleusercontent.com/-HYBognBGQ2w/TYZJCsqRi1I/AAAAAAAAADA/YIe8pR_ANQA/s1600/asto2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://lh6.googleusercontent.com/-HYBognBGQ2w/TYZJCsqRi1I/AAAAAAAAADA/YIe8pR_ANQA/s1600/asto2.jpg" /></a></div><div class="separator" style="clear: both; text-align: center;"><span style="font-size: large;"><a href="https://lh3.googleusercontent.com/-GVWvtw3fXLo/TYSxhmLozZI/AAAAAAAAACg/yFRz6TDNWNo/s1600/MH900434409.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><br />
</a></span></div><span style="font-size: large;"> </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"> </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>Dragon don't you think it's getting late for the luncheon.</i>" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>Yup, and ask me why (why?) coz my pressure cooker has gone kaput</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>Dragon you need an exorcist to exorcise the demon out of ya kitchen</i>" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>No demons here (and if she says no demon there's no demon...she knows it better :D) I have got my big pan and it can cook faster</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>No Dragon, it's impossible, your wide pan is no a match for the pressure cooker, the later cooks a way more faster, now, Dragon do you know why pressure cooks faster</i>?" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><div class="separator" style="clear: both; text-align: center;"><a href="https://lh6.googleusercontent.com/-e4tEkLu8N0o/TYSb_GchAEI/AAAAAAAAACI/7gWQYKYEzF0/s1600/ndi0682l.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="224" src="https://lh6.googleusercontent.com/-e4tEkLu8N0o/TYSb_GchAEI/AAAAAAAAACI/7gWQYKYEzF0/s320/ndi0682l.jpg" width="320" /></a><span style="font-size: large;"></span></div><span style="font-size: large;"> </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>Water boils at a higher temperature under pressure. (Ha, don’t we all?)</i>"</span></div><span style="font-size: large;"><a href="https://lh4.googleusercontent.com/-k2NxzqphdeA/TYSGxbQ6JwI/AAAAAAAAABs/WvDih8CBH2A/s1600/cooker.gif" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="315" src="https://lh4.googleusercontent.com/-k2NxzqphdeA/TYSGxbQ6JwI/AAAAAAAAABs/WvDih8CBH2A/s400/cooker.gif" width="400" /></a> </span><br />
<span style="font-size: large;">And she is right with that one. </span><br />
<div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"> </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>Absolutely right! But lemme explain: See Dragon, the primary use of a pressure cooker is to boil food stuff, But some hardy cereals and food stuffs need a lot of boiling to soften, increasing the temperature to speed up the boiling process don't work here because in case of water one cannot rise the temperature beyond 100 Celsius at ordinary condition(i.e. under normal atmospheric pressure). It is because water boils and evaporates at this temperature.The simple principle says water or any other liquid's boiling point depends upon the atmospheric pressure on its surface. If the atmospheric pressure is high boiling point is high and vice-versa. In pressure cookers we increase the surface pressure on the liquid by heating the submerged food stuffs under air tight condition. This rises the vapor pressure owning to heating. This increment in the pressure rises the boiling point of water to a temperature more than 100 Celsius and thus water remains liquid at higher temperature and cooking process fastens.</i>" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>I knew it (know who's the Boss)</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"> </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>Okay Dragon now that you know boiling process can you tell me why water boils quicker in high altitudes than in plains?</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>Same … Atmospheric Pressure!!</i>" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">She is right with this too.</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>Yes, you are right, with altitude atmospheric pressure falls...so liquids attain the low atmospheric pressure at lower temp. than in plains</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>It's good that you know how stuffs work, see my kitchen is messed up by failing appliances. Here just see my exhaust chimney has failed. And don't ask me how it works because this one I know better.</i>" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>What do you know?</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>It SUCKS.. haha Sucks the air OUT</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div class="separator" style="clear: both; font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><a href="https://lh4.googleusercontent.com/-nG6Drg618xY/TYSHIil5z5I/AAAAAAAAABw/IiAuXnDIFHg/s1600/ideal-kitchen-exhaust-sytem-setup.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="151" src="https://lh4.googleusercontent.com/-nG6Drg618xY/TYSHIil5z5I/AAAAAAAAABw/IiAuXnDIFHg/s320/ideal-kitchen-exhaust-sytem-setup.jpg" width="320" /></a></span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><a href="https://lh4.googleusercontent.com/-OJP6yWBM4dg/TYSHLTAW7vI/AAAAAAAAAB0/ZrFNsUcxqFs/s1600/inneficient-kitchen-exhaust.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="180" src="https://lh4.googleusercontent.com/-OJP6yWBM4dg/TYSHLTAW7vI/AAAAAAAAAB0/ZrFNsUcxqFs/s320/inneficient-kitchen-exhaust.jpg" width="320" /></a>Me: "<i>O yeah I know that you know but let me tell you the kitchen physics behind it. An exhaust fan converts rotational motion into a thrust...A pressure difference is produced between the forward and rear surfaces of the specially shaped blade, and air is accelerated behind the blade, that is, if you turn a screw it moves forward or reverse depending upon the direction of rotation... so happens in the case of a exhaust fan..if you move the blades clock wise air moves forward... and counter clock wise air moves backward.</i>" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>Still it sucks... now mend it fast!</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>Well, my sink is congested, just see at the inundated sink, bowls floating spoons sunk, horrible I need to clear the pipes</i>" </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>Hey now another question is ready, so Dragon can you tell me why the spoon sunk and the bowl is floating?</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>Grrrr..... (I tried to hide behind refrigerator, you can't predict about a dragon, make her angry and she gonna turn you into minced meat in seconds) ...after she calmed down....she answered "A spoon has a flat end…</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><div class="separator" style="clear: both; text-align: center;"><span style="font-size: large;"><iframe allowfullscreen='allowfullscreen' webkitallowfullscreen='webkitallowfullscreen' mozallowfullscreen='mozallowfullscreen' width='320' height='266' src='https://www.youtube.com/embed/eQsmq3Hu9HA?feature=player_embedded' frameborder='0'></iframe></span></div><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>O my dear how do you know everything :D. Let me explain some kitchen physics responsible for the phenomena. A body floats in a liquid, in this case water, if the weight of the water displaced by it is more than or equal to its weight. Spoon has got a smaller volume and has a higher mass, i.e. high density, therefore, when it is thrown in water; the water displaced is less thus the weight of the displaced water is less than the weight of the spoon. And it submerges. While a bowl has got a large surface area (therefore high density) hence it can displace volume of water more than a spoon does, so the weight of the water displaced by a bowl is equal to the weight of the weight of the bowl and hence it floats" (Archimedes Principle)</i></span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon : "<i>Okay now leave the kitchen physics, chicken physics is more important for ya tummy</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dinner is ready...yum...what an aroma .....We started enjoying the delicacies..she was not angry no more.</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Finally she told me about her failed microwave oven and I got a chance to ask her another question.</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Me: "<i>How does a </i><i><span class="yshortcuts"><span id="lw_1300458918_1" style="background-attachment: scroll; background-position: 0% 0%;">microwave oven</span></span></i></span><span style="font-size: large;"><i> work</i>?"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">She had no idea on it </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;">Dragon: "<i>It is a magic</i>" I wondered where the wand was.</span></div><div class="separator" style="clear: both; font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><a href="https://lh3.googleusercontent.com/-d1ngz18JE5U/TYSJd2zbucI/AAAAAAAAAB4/2hdQaCCr6lE/s1600/How-Foods-Cook-in-Microwave-Oven.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="220" src="https://lh3.googleusercontent.com/-d1ngz18JE5U/TYSJd2zbucI/AAAAAAAAAB4/2hdQaCCr6lE/s320/How-Foods-Cook-in-Microwave-Oven.jpg" width="320" /></a></span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><a href="https://lh4.googleusercontent.com/-vbZ914ZLMDc/TYSVqzC4wUI/AAAAAAAAAB8/v2RwFS0F31o/s1600/diag2_big.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="227" src="https://lh4.googleusercontent.com/-vbZ914ZLMDc/TYSVqzC4wUI/AAAAAAAAAB8/v2RwFS0F31o/s320/diag2_big.jpg" width="320" /></a></span><span style="font-size: large;">Me: "<i>See, I'll explain you it's simple. A microwave oven sends out microwaves of high frequency, wanna know how fast it is? I bet you must leave the poorly finger counting that you do. It is approximately 2500,000,000 vibrations a second.. and what happens such high vibrations makes the water, other food material molecules vibrate and such tremendous pace of vibrations gives out heat and heats up our food stuffs...what if your rub your hands even 1/10,000 times the microwave vibration? You won't see even a bit of flesh left on your bones...I wonder bones may burn out too....</i>"</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><div class="separator" style="clear: both; text-align: justify;"><span style="font-size: large;">She was thinking to resort to finger counting and then she realized that I had teased her... OMG flames are starting to blow out of her nostrils...wings are ready to spread... </span></div><div class="separator" style="clear: both; text-align: center;"><span style="font-size: large;"><a href="https://lh4.googleusercontent.com/-2zKDtOo_8IM/TYSoVau-qeI/AAAAAAAAACU/FX0vQEkwx1I/s1600/3726337376_7349580bd6_o.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="220" src="https://lh4.googleusercontent.com/-2zKDtOo_8IM/TYSoVau-qeI/AAAAAAAAACU/FX0vQEkwx1I/s400/3726337376_7349580bd6_o.jpg" width="400" /></a></span></div><span style="font-size: large;"><a href="https://lh5.googleusercontent.com/-ng6RqKTf50I/TYSbFvsa_hI/AAAAAAAAACA/07zfk99scHU/s1600/28928.gif" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><br />
</a></span><br />
<span style="font-size: large;"> </span><br />
<span style="font-size: large;">Save My Soul.... We'll back next week with more interesting episodes of kitchen physics, she is chasing me!!..Cya all next week. </span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span><br />
<div style="text-align: left;"><span style="font-size: large;"><br />
</span></div><div style="text-align: left;"><span style="font-size: large;">To read Dragon's Views Visit http://www.emotionalus.blogspot.com/</span></div></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div><div style="font-family: Georgia,"Times New Roman",serif; text-align: justify;"><span style="font-size: large;"><br />
</span></div></div>iphysicshttp://www.blogger.com/profile/07518577317978615328noreply@blogger.com0