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inverse-square law
(redirected from Inverse square law)

   Also found in: Dictionary/thesaurus, Medical, Legal, Acronyms, Wikipedia 0.01 sec.
inverse-square law [′in‚vərs ¦skwer ‚lȯ]
(physics)
Any law in which a physical quantity varies with distance from a source inversely as the square of that distance.

inverse-square law
inverse-square law
A law which applies to a light source (or to a sound source) that is in a space far away from any reflecting surface: the intensity at a point, as measured on a surface which is perpendicular to a line drawn between the point and the source, varies inversely with the square of the distance between the point and the source. (For sound waves, this decrease in intensity is equivalent to a drop in sound-pressure level of 6 dB for each doubling of distance from the source.)


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The statement at the bottom of the first column on Page 15, "Using the inverse square law, intensity is reduced by one quarter every time the distance is doubled," is not correct.
He said a principle of physics - called the inverse square law - predicts that if a sound source moves twice as close, it will be four times as loud.
In effect, the rate at which oil mass is lost from an ink decays according to an approximate inverse square law with time.
 
 
 
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