Difference between revisions of "Dichroism"
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== Description == | == Description == | ||
| − | An optical effect in which a material shows two different colors under different lighting conditions. For example, under plane [http://cameo.mfa.org/materials/fullrecord.asp?name=polarized | + | An optical effect in which a material shows two different colors under different lighting conditions. For example, under plane [http://cameo.mfa.org/materials/fullrecord.asp?name=polarized%20light polarized light], [http://cameo.mfa.org/materials/fullrecord.asp?name=calcite calcite] crystals will change colors from blue to pink when viewed at different angles. Some materials, such as [http://cameo.mfa.org/materials/fullrecord.asp?name=alexandrite alexandrite], [http://cameo.mfa.org/materials/fullrecord.asp?name=cobalt%20yellow cobalt yellow], and [http://cameo.mfa.org/materials/fullrecord.asp?name=chlorophyll chlorophyll] solutions, exhibit different colors when viewed in reflected versus transmitted light. A dichroic mirror is designed to reflect some wavelengths while transmitting others. |
See also [http://cameo.mfa.org/materials/fullrecord.asp?name=anisotropy anisotropic], and [http://cameo.mfa.org/materials/fullrecord.asp?name=birefringent birefringent]. | See also [http://cameo.mfa.org/materials/fullrecord.asp?name=anisotropy anisotropic], and [http://cameo.mfa.org/materials/fullrecord.asp?name=birefringent birefringent]. | ||
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== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | Dichroismus (Deut.); | + | Dichroismus (Deut.); dicroïsme (Fr.); dichroic light |
== Authority == | == Authority == | ||
| − | * | + | * Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing) |
| − | * | + | * Walter C. McCrone, John Gustave Delly, ''The Particle Atlas'', W. McCrone Associates, Chicago, IV, 1972 |
| − | * | + | * Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, ''Notes for Workshop on New Methods in the Cleaning of Paintings'', J.Paul Getty Trust, Los Angeles, 1990 |
* Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Dichroic (Accessed Nov. 9, 2005) | * Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Dichroic (Accessed Nov. 9, 2005) | ||
| − | * | + | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 |
* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | * ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | ||
Revision as of 06:55, 24 July 2013
Description
An optical effect in which a material shows two different colors under different lighting conditions. For example, under plane polarized light, calcite crystals will change colors from blue to pink when viewed at different angles. Some materials, such as alexandrite, cobalt yellow, and chlorophyll solutions, exhibit different colors when viewed in reflected versus transmitted light. A dichroic mirror is designed to reflect some wavelengths while transmitting others.
See also anisotropic, and birefringent.
Synonyms and Related Terms
Dichroismus (Deut.); dicroïsme (Fr.); dichroic light
Authority
- Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
- Walter C. McCrone, John Gustave Delly, The Particle Atlas, W. McCrone Associates, Chicago, IV, 1972
- Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, Notes for Workshop on New Methods in the Cleaning of Paintings, J.Paul Getty Trust, Los Angeles, 1990
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Dichroic (Accessed Nov. 9, 2005)
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998