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An instrument for measuring a property of light, especially luminous intensity or flux.
(General Physics) 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
pho•tom•e•ter(foʊˈtɒm ɪ tər)
an instrument that measures luminous intensity or brightness, luminous flux, light distribution, color, etc., usu. by comparing the light emitted by two sources, one source having certain specified standard characteristics.
an instrument for measuring various characteristics of light, as intensity, distribution, flux, color, etc.See also: Instruments
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|Noun||1.||photometer - measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source|
measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something
spectrophotometer - a photometer for comparing two light radiations wavelength by wavelength
|2.||photometer - photographic equipment that measures the intensity of light|
cytophotometer - a photometer that can be used to locate and identify chemical compounds in a cell by measuring the intensity of the light that passes through stained sections of the cytoplasm
photographic equipment - equipment used by a photographer