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Photometer   /fətˈɑmɪtər/   Listen
Photometer

noun
1.
Measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source.
2.
Photographic equipment that measures the intensity of light.  Synonyms: exposure meter, light meter.



Related searches:
cytophotometer
spectrophotometer


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"Photometer" Quotes from Famous Books



... brilliancy, splendor; effulgence, refulgence; fulgor^, fulgidity^; dazzlement^, resplendence, transplendency^; luminousness &c adj.; luminosity; lucidity; renitency^, nitency^; radiance, radiation; irradiation, illumination. actinic rays, actinism; Roentgen-ray, Xray; photography, heliography; photometer &c 445. [Science of light] optics; photology^, photometry; dioptrics^, catoptrics^. [Distribution of light] chiaroscuro, clairobscur^, clear obscure, breadth, light and shade, black and white, tonality. reflection, refraction, dispersion; refractivity. ...
— Roget's Thesaurus of English Words and Phrases: Body • Roget
... was constructed on the Bunsen principle. A little way from this table, and separated by a partition, we had the chemical laboratory with its furnaces and stink-chambers. Later on another chemical laboratory was installed near the photometer-room, and this Dr. ...
— Edison, His Life and Inventions • Frank Lewis Dyer and Thomas Commerford Martin
... magnitudes are performed almost exclusively with the photometer of ZOeLLNER in a more ...
— Lectures on Stellar Statistics • Carl Vilhelm Ludvig Charlier


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