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twinkling

twinkling In mineral optics, the effect observed in plane-polarized light when a thin section of an anisotropic mineral with widely differing refractive indices is rotated rapidly on the stage. The ‘twinkling’ appearance is caused by the rapid changes in relief. Calcite is a well-known example.

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"twinkling." A Dictionary of Earth Sciences. . Encyclopedia.com. 17 Dec. 2017 <http://www.encyclopedia.com>.

"twinkling." A Dictionary of Earth Sciences. . Encyclopedia.com. (December 17, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/twinkling

"twinkling." A Dictionary of Earth Sciences. . Retrieved December 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/twinkling

twinkling

twinkling, in astronomy: see seeing.

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"twinkling." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 17 Dec. 2017 <http://www.encyclopedia.com>.

"twinkling." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (December 17, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/twinkling

"twinkling." The Columbia Encyclopedia, 6th ed.. . Retrieved December 17, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/twinkling