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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
/ fəʊˈtɒmɪtə /
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
Word 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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