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Inverse Square Laws
Gravity, electrostatic force, and luminosity are inversely proportional to the square of the distance. This Demonstration gives an idea of why: an area projected from the center of a sphere grows proportionately to the square of the distance.




"Inverse Square Laws" from The Wolfram Demonstrations Project
 http://demonstrations.wolfram.com/InverseSquareLaws/
Contributed by: Enrique Zeleny V.
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