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monochromator
monochromator In reflected-light microscopy, an accessory used to observe the optical properties of minerals with incident light of a specific wavelength. Fixed monochromatic interference filters with a band width of 15–50 nm and continuous-spectrum monochromators are available. They are used primarily for reflectance measurements at specific wavelengths, normally 546 to 589 nm.
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Cite this article
AILSA ALLABY and MICHAEL ALLABY. "monochromator." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "monochromator." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-monochromator.html AILSA ALLABY and MICHAEL ALLABY. "monochromator." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-monochromator.html |
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monochromator
monochromator A device for selecting a very narrow range of wavelengths of light. It can be a spectrograph in which incoming light is dispersed by a diffraction grating, and a small part of the resulting spectrum selected by passing it through a narrow exit slit. Alternatively, it can be an interference filter that allows only a narrow band of wavelengths to pass.
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Cite this article
"monochromator." A Dictionary of Astronomy. 1997. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>. "monochromator." A Dictionary of Astronomy. 1997. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O80-monochromator.html "monochromator." A Dictionary of Astronomy. 1997. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-monochromator.html |
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