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William hypothesized that the Earth is a giant magnet.
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Discovered mountains and craters on the moon of Venus, and the four largest satelites of Jupiter, Europa, Callisto, and Ganymede.
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Discovered law of refraction.
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Overturns a theory that heavier objects fall faster then lighter objects.
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Discovered Hooke's law of elasticity.
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Developed theory of gravitation.
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Nuclear technology is discovered.
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States the three laws of motion.
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Became the first American physicists.
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Developed new methods of analytical mechanics.
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Founded the science of thermodynamics.
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Discovered mechanical equivalent of heat.
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Studied blackbody radiation.
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Created alternating currents.
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Albert Einstein discovers the E=mc2 theory about energy equaling mass times the speed of light squared.
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Manley, Mark. "Famous Physicists." Kent. N.p., 25 2012. Web. 1 Jan 2013. http://cnr2.kent.edu/~manley/physicists.html;. Creekmore, Trisha. "The Science Channel." The Science Channel. N.p., n.d. Web. 3 Jan 2013. http://science.discovery.com/convergence/100discoveries/big100/physics.html.