photobleachingn.
/ˈfəʊtə(ʊ)bliːtʃɪŋ/, U.S. /ˈfoʊdoʊˌblitʃɪŋ/ Loss of colour when exposed to light.
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the world > matter > physics > electromagnetic radiation > light > scientific effects of light > [noun] > loss of colour due to
photobleaching1937
1937 Ann. Rep. Progr. Chem. 33 426 Considerations of the photo~bleaching of fluorescent dyes in an oxygen-free atmosphere by the action of ferrous salts.
1974 McGraw-Hill Yearbk. Sci. & Technol. 127/2 Light conversion in photo~active chlorophyll is accompanied by photobleaching and by the simultaneous appearance of a free or unpaired electron.
2002 New Scientist 25 May 103 (advt.) Basin-scale variability of coloured dissolved organic matter photobleaching and photoreactivity.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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