Chlorophane

Origin

Ancient Greek χλωρός ("light green") + φαίνω ("show, shine"). Compare .

Full definition of chlorophane

Noun

1. (mineral) A variety of fluorspar, which, when heated, gives a striking emerald-green light.
• 2013, Jack DeMent, Handbook of Fluorescent Gems and Minerals - An Exposition and Catalog of the Fluorescent and Phosphorescent Gems and Minerals, Including the Use of Ultraviolet Light in the Earth Sciences, Read Books LtdCHLOROPHANE. The Amelia Court House, Va., locality yields a bluegreen fluorescing chlorophane. Kunz and Baskerville qualitatively studied the emission from Chlorophane in 1903. (See also the discussion for Fluorite which is also ...
• 1904, Knowledge...: A Monthly Record of Science, page 72Chlorophane is the name given to those varieties of Fluorite (Fluorspar Calcium Fluoride), which possess to a noticeable extent the property of “thermo-luminosity ," that is to say, of spontaneous_' emitting light when heated. The temperature ...
• 1851, The Edinburgh New Philosophical Journal: Exhibiting a View of the Progressive Discoveries and Improvements in the Sciences and the Arts, page 94the light from chlorophane is incomparably less intense than that from a common lamp. For there can be no doubt that each of the ten discharges gave a light which lasted brilliantly for six seconds, and upon the whole was equal in duration ...
2. (biology) The yellowish-green pigment in the inner segment of the cones of the retina.