grism


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grism

[′griz·əm]
(spectroscopy)
A combination of a diffraction grating and a prism, wherein the grating spreads light into colors and the prism moves the spectrum's position to the point in an image where the observed object appears.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Near-infrared imager with coronagraphic capability and slltless "grism" spectroscopy
Grism compressor for carrier-envelope phase-stable millijoule-energy chirped pulse amplifier laser featuring bulk material stretcher.
The others (Eberhard & Green, 1989; Goldhaber & DeTurck, 1988; Grism, 1993; Silver et al., 1995) had unknown amounts of prior testing, and there were no materials to assist in forming the distractors.
A patent-infringement lawsuit deprived the spacecraft of its first gyroscopes, the maker of its radio transmitter went bankrupt, and the first grooved prism (or "grism") intended for GALEX's spectroscopy was destroyed in a flooded basement.
Surprisingly, if you correct for their large redshifts, these superdistant galaxies have pretty normal colors, says Malhotra, who studied them with Hubble's grism spectrograph.
While Webb looks at the bright star, grisms in the filter wheel will spread the white light of the star out on a detector.
The wheel holds colour filters that transmit a broad range of wavelengths as well as devices called grisms, which spread out incoming light in much the same way as a prism spreads sunlight into a rainbow of component colours.