Spectrophotometernoun
(physics) An instrument used to measure the intensity of electromagnetic radiation at different wavelengths.
Spectrophotometernoun
An instrument for measuring or comparing the intensities of the colors of the spectrum.
Spectrophotometernoun
An analytical instrument for measuring the degree of absorption of light at different wavelengths by a chemical substance. A specific pattern of absorption intensities at a series of wavelengths is a characteristic of each different chemical substance.
Spectrophotometernoun
a photometer for comparing two light radiations wavelength by wavelength
Photometernoun
(physics) Any of several instruments used to measure various aspects of the intensity of light.
Photometerverb
(astronomy) To measure some aspect of light (from a star) using a photometer.
Photometernoun
An instrument for measuring the intensity of light, or, more especially, for comparing the relative intensities of different lights, or their relative illuminating power.
Photometernoun
measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
Photometernoun
photographic equipment that measures the intensity of light
Photometernoun
an instrument for measuring the intensity of light.
Photometer
A photometer is an instrument that measures the strength of electromagnetic radiation in the range from ultraviolet to infrared and including the visible spectrum. Most photometers convert light into an electric current using a photoresistor, photodiode, or photomultiplier.