tenebrescencen.
/tɛnɪˈbrɛsəns/ Physics.
The property of reversibly darkening and bleaching in response to radiation of different wavelengths (originally restricted to the property of darkening only).
ΘΚΠ
the world > matter > physics > electromagnetic radiation > light > scientific effects of light > [noun] > study of chemical action of light > change of colour by specific exposure
phototropy1900
phototropism1921
photochromism1951
photochromy1951
tenebrescence1953
photochromicity1966
1953 Amer. Mineralogist 38 919 (heading) Composition, tenebrescence and luminescence of spodumene minerals.
Derivatives
teneˈbresce v. (intransitive) to darken or bleach thus.
ΘΚΠ
the world > matter > physics > electromagnetic radiation > light > scientific effects of light > [verb (intransitive)] > undergo change
tenebresce1946
1946 H. W. Leverenz in RCA Rev. VII. 199 (heading) Luminescence and tenebrescence as applied in radar. [Note] The terms ‘tenebrescence’ and ‘scotophor’ are derived..to correspond to the terms ‘luminescence’ and ‘phosphor’... Tenebrescence is any absorption of light not intrinsic to the materials involved;..a scotophor is a tenebrescent material..which may be made to tenebresce reversibly, i.e., visibly darken and bleach (irrespective of chromaticity), under suitable irradiations.
teneˈbrescent adj.
ΘΚΠ
the world > matter > physics > electromagnetic radiation > light > scientific effects of light > [adjective] > of chemical action of light > of change of colour by
photochromatic1856
photochromic1881
phototropic1900
tenebrescent1953
1953 Amer. Mineralogist 38 919 Only non-chromian spodumene is luminescent and tenebrescent.
1970 Dorion & Weibe Photochromism i. 9 Tenebrescent and scotophoric materials are crystals that may be colored by radiation such as electron bombardment, X-rays, or light, and that are bleached by other radiation.
This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2019).
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n.1946