spectrograph

Instrument or apparatus for photographing or otherwise recording spectra

EntityQ911551

Subclass of: spectrometer

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

An optical spectrometer is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials. The variable measured is most often the irradiance of the light but could also, for instance, be the polarization state. The independent variable is usually the wavelength of the light or a closely derived physical quantity, such as the corresponding wavenumber or the photon energy, in units of measurement such as centimeters, reciprocal centimeters, or electron volts, respectively.

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Source last edited October 12, 2026. AIDB refreshes this page daily.

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AIDB. (2026). spectrograph (Q911551). Retrieved from https://aidb.si/e/spectrograph-Q911551