spectrometer

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spectrometer

any instrument for producing a spectrum, esp one in which wavelength, energy, intensity, etc., can be measured

spectrometer

(spek-trom -ĕ-ter)
1. an instrument, such as a spectrograph, in which the spectrum of a source of radiation is produced, especially one in which the spectrum is recorded by electronic means so that wavelength, intensity, etc., can be measured. Spectrometers covering various wavelength ranges are used in ground-based and satellite and spaceprobe measurements.
2. an instrument for determining the distribution of energies in a beam of particles.

Spectrometer

 

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.

spectrometer

[spek′träm·əd·ər]
(spectroscopy)
A spectroscope that is provided with a calibrated scale either for measurement of wavelength or for measurement of refractive indices of transparent prism materials.
A spectroscope equipped with a photoelectric photometer to measure radiant intensities at various wavelengths.
References in periodicals archive ?
Prematurely running out of its nitrogen-ice coolant in 1999, Hubble's Near Infrared Camera and Multi-Object Spectrometer (NICMOS) was brought back to life in March when astronauts installed a neon-gas refrigerator (SN: 3/16/02, p.
Ball Aerospace's multi-decade legacy in cryogenically-cooled infrared systems was continued on WISE, based on other successful programs including the Infrared Astronomical Satellite, the Cosmic Background Explorer, the Spitzer Space Telescope, and the Near Infrared Camera and Multi-Object Spectrometer for the Hubble Space Telescope.
He and his collaborators had studied the pillars with Hubble's near-infrared camera and multi-object spectrometer (NICMOS) in 1998, about a year before the device ran out of its solid nitrogen coolant and stopped operating.

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