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During the fourth century, Aristotle talked a bit about the idea of energy in a book called Nicomachean Ethics. He proposed that heavier objects roll faster than others. Please disregard the month and and day of this listed event.
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Around the 1500's and 1600's, Galileo Galilei dropped objects ffrom the Pisa Tower and rolled items over a sloped surface. He observed that the higher the object is, the more speed it will have when fallen or rolled down.
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During the early 1600's, Rene Descartes believed that energy is in constant motion
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Around the 1600's, Leibniz argued for the "vis viva," or living force. The vis viva theory states that living force is calculated by multiplying the mass of an object by its speed squared.
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Isaac Netwon proposed the idea of gravity in his book Principia.
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The laws of Calculus developed by Leibniz were accepted in England.
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During the 1850's, the laws of mechanics were compiled to form the Laws of Thermodynamics.
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In 1905, Einstein started forming his Theory of Relativity and compiling his work and findings.
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The Law of Conservation was proved.
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The Manhattan Project initiated to start building the world’s first atomic bomb. (Atomic energy)
