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Why gravity hold inverse squere law?

Updated: 9/15/2023
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The inverse square law is a logical extension of the geometry of space. As gravity propagates from a mass, it can be thought of as creating an expanding sphere of force. If we imagine gravity to be produced by an emission of particles called gravitons (much as light is caused by an emission of photons) then at any given distance, the photons are dispersed throughout the spherical surface of the expanding sphere, and as that surface increases proportionately to the square of the radius, so do the gravitons become less dense, according to the square of the distance. Even if we use a different model of what gravity does, not requiring gravitons, the math works out the same, because you have the same expanding sphere.

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Q: Why gravity hold inverse squere law?
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