| 1 |
Note that gravitational forces cause particles to move in vacuum but we are also familiar with particles moving "downwards" if placed on a nonflat surface
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| 2 |
Einstein's theory of General Relativity is a brilliant generalization of this to describe all gravity in terms of structure of Space-Time
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| 3 |
We do not say say the Earth creates a "Gravitational Force" which causes Apples to fall as noted by Newton
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| 4 |
Rather The Earth distorts space-Time and Apples move in this distorted Space-Time
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| 5 |
In Newton's law, gravitational force of Earth proportional to its Mass
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| 6 |
In Einstein's description, distortion of Space-Time is proportional to Mass of particle
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| 7 |
Everything (including you) distorts Space-Time;
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This distortion is insignificant except for very Heavy Bodies
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