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Measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
Answer for the clue "Measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source ", 10 letters:
photometer
Alternative clues for the word photometer
Word definitions for photometer in dictionaries
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Photometer \Pho*tom"e*ter\, n. [Photo- + -meter: cf. F. photom[`e]tre.] (Physics) An instrument for measuring the intensity of light, or, more especially, for comparing the relative intensities of different lights, or their relative illuminating power.
WordNet
Word definitions in WordNet
n. measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source photographic equipment that measures the intensity of light [syn: light meter , exposure meter ]
Wiktionary
Word definitions in Wiktionary
n. (context physics English) Any of several instruments used to measure various aspects of the intensity of light. vb. (context astronomy English) To measure some aspect of light (from a star) using a photometer.
Wikipedia
Word definitions in Wikipedia
A photometer , generally, is an instrument that measures light intensity or optical properties of solutions or surfaces. Photometers measure: Illuminance Irradiance Light absorption Scattering of light Reflection of light Fluorescence Phosphorescence Luminescence ...
Usage examples of photometer.
The jump in the photometers showed that the solar blade, invisible in empty space, had traveled sideways.
At our research station, away from Edo, the company maintains radiometers, photometers, photo-polarimeters, cameras.
It carried two spectrographs, a high-speed photometer, a wide-field Advanced Charge-Coupled Device, and a fine guidance sensor.