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by Anonymous on February 5th, 2009

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What contribuiton did Sir Isaac make with his Law of Gravity?

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  • by engineer is Terminator on February 5th, 2009

    engineer is Terminator

    Removed the darkness of shear ignorace from human mind.

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  • by xprofessor on February 5th, 2009

    xprofessor

    Newton made the connection between the effects observed on earth (things such as apples fall down) and celestial mechanics (heavenly bodies attract each other). Moreover he quantified it and determined (in his famous law of universal gravitation) that all masses attract each other in proportion to the product of their masses and inversely proportional to the square of the distance between them.

    This was one of the first unification laws of physics -- a succinct mathematical statement that quantitatively explains a very wide range of phenomena.

    In Newton's scheme, the Earth (& other planets) revolves around the Sun, and the Moon around the Earth, because of gravitational attraction -- the very same effect that causes the Earth to attract apples that detach from trees. In his time this was very big!

    We sent men to the moon in the 20th Century -- and continue to launch satellites and other spacecraft -- all based on Newton's theory, which has stood the test of time. Minor corrections by Einstein's theory of relativity are almost negligible for space navigation.

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