Light Intensity Versus Distance

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“Another illustration of how luminous density varies inversely as the square of the distance.” —Croft 1917

Keywords

square, light, density, Distance, luminous, source, inversely

Galleries

Miscellaneous Optics

Source

Terrel Croft Library of Practical Electricity Volume Eight: Practical Electric Illumination (New York: McGraw-Hill Book Company, Inc., 1917) 55

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