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photometry

photometry (fōtom'utrē) [key], branch of physics dealing with the measurement of the intensity of a source of light, such as an electric lamp, and with the intensity of light such a source may cast on a surface area.

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The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.

More on photometry from Infoplease:

photometry: meaning and definitions - photometry: Definition and Pronunciation
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photometry: Photometric Units of Measurement - Photometric Units of Measurement The intensity of electric lights is commonly given as so many ...
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