spectrometer(redirected from Multi-Object Spectrometer)
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In the broad sense, a spectrometer is an instrument for measuring the distribution of some physical quantity I as a function of a parameter x. For example, the function f(x) may define the distribution of electrons with respect to velocity (beta-ray spectrometer), the distribution of atoms with respect to mass (mass spectrometer), the distribution of gamma quanta with respect to energy (gamma-ray spectrometer), or the distribution of luminous intensity with respect to wavelength λ (optical spectrometer).
In the narrow sense, a spectrometer is a spectroscopic instrument for measuring optical spectra f (λ) by means of photoelectric radiation detectors.