For the Love of Physics

For the Love of Physics

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a€œYOU HAVE CHANGED MY LIFEa€ is a common refrain in the emails Walter Lewin receives daily from fans who have been enthralled by his world-famous video lectures about the wonders of physics. a€œI walk with a new spring in my step and I look at life through physics-colored eyes, a€ wrote one such fan. When Lewina€™s lectures were made available online, he became an instant YouTube celebrity, and The New York Times declared, a€œWalter Lewin delivers his lectures with the panache of Julia Child bringing French cooking to amateurs and the zany theatricality of YouTubea€™s greatest hits.a€ For more than thirty years as a beloved professor at the Massachusetts Institute of Technology, Lewin honed his singular craft of making physics not only accessible but truly fun, whether putting his head in the path of a wrecking ball, supercharging himself with three hundred thousand volts of electricity, or demonstrating why the sky is blue and why clouds are white. Now, as Carl Sagan did for astronomy and Brian Green did for cosmology, Lewin takes readers on a marvelous journey in For the Love of Physics, opening our eyes as never before to the amazing beauty and power with which physics can reveal the hidden workings of the world all around us. a€œI introduce people to their own world, a€ writes Lewin, a€œthe world they live in and are familiar with but dona€™t approach like a physicista€”yet.a€ Could it be true that we are shorter standing up than lying down? Why can we snorkel no deeper than about one foot below the surface? Why are the colors of a rainbow always in the same order, and would it be possible to put our hand out and touch one? Whether introducing why the air smells so fresh after a lightning storm, why we briefly lose (and gain) weight when we ride in an elevator, or what the big bang would have sounded like had anyone existed to hear it, Lewin never ceases to surprise and delight with the extraordinary ability of physics to answer even the most elusive questions. Recounting his own exciting discoveries as a pioneer in the field of X-ray astronomya€”arriving at MIT right at the start of an astonishing revolution in astronomya€”he also brings to life the power of physics to reach into the vastness of space and unveil exotic uncharted territories, from the marvels of a supernova explosion in the Large Magellanic Cloud to the unseeable depths of black holes. a€œFor me, a€ Lewin writes, a€œphysics is a way of seeinga€”the spectacular and the mundane, the immense and the minutea€”as a beautiful, thrillingly interwoven whole.a€ His wonderfully inventive and vivid ways of introducing us to the revelations of physics impart to us a new appreciation of the remarkable beauty and intricate harmonies of the forces that govern our lives.The equation is very simple; the amount of energy in kilocalories required is the mass in kilograms of the water times the temperature change in Celsius. ... increase is about 50 degrees Celsius, it takes roughly 5, 000 kilocalories, or 20 million joules, of energy to produce a hot bath. ... A desktop computer with a 17- inch cathode-ray-tube monitor uses between 150 and 350 watts, while a computer andanbsp;...

Title:For the Love of Physics
Author: Walter Lewin
Publisher:Simon and Schuster - 2011-05-03

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