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Dictionary

in'verse square' law"

Physics, Optics.
one of several laws relating two quantities such that one quantity varies inversely as the square of the other, as the law that the illumination produced on a screen by a point source varies inversely as the square of the distance of the screen from the source.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

inversely

inversion

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