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monochromator

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mon⋅o⋅chro⋅ma⋅tor

[mon-uh-kroh-mey-ter]
–noun Optics.
a spectroscope with a slit that can be moved across the spectrum for viewing individual spectral bands.
Also called monochromatic illuminator.


Origin:
1905–10; monochromat(ic) + (illuminat)or
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: mono·chro·ma·tor
Pronunciation: "män-&-'krO-"mAt-&r
Function: noun
: a device for isolating a narrow portion ofa spectrum
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Encyclopedia

monochromator

instrument that supplies light of one colour or light within a narrow range of wavelengths. Unwanted wavelengths (colours) are blocked by filters (first used by Bernard Lyot in the 1930s) or bent away, as in the spectroheliograph. The monochromator is used to photograph the Sun and to study photochemical effects; it is usually a component of a spectrophotometer.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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