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photometer
[foh-tom-i-ter]
noun
an instrument that measures luminous intensity or brightness, luminous flux, light distribution, color, etc., usually by comparing the light emitted by two sources, one source having certain specified standard characteristics.
photometer
/ əʊˈɒɪə /
noun
an instrument used in photometry, usually one that compares the illumination produced by a particular light source with that produced by a standard source See also spectrophotometer
51Թ History and Origins
Origin of photometer1
Example Sentences
Euclid also has a near-infrared spectrometer and photometer for measuring each galaxy’s redshift, or the wavelength-stretching effect that occurs in light arriving from the faraway cosmos.
The University of Bern has provided a powerful photometer for the telescope.
He just needed a photometer 1000 times more sensitive than any available.
Earth appears so bright because Kepler's light-sensing photometer is exquisitely sensitive.
For each sample, I use a refractometer, which measures moisture content, a pH meter for acidity, a honey color photometer, and other instruments that measure acidity and viscosity.
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