Image: Phosphorescent pigment calcium sulfide and silicate, emitting red and blue
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Description: Phosphorescence in calcium sulfide in red (left) and silicate in blue (right)
Title: Phosphorescent pigment calcium sulfide and silicate, emitting red and blue
Credit: Derivative of these four pictures from Wikipedia: https://en.wikipedia.org/wiki/File:Phosphorescent_pigment_red.JPG https://en.wikipedia.org/wiki/File:Phosphorescent_pigment_red_dark.JPG https://en.wikipedia.org/wiki/File:Phosphorescent_pigment_blue.JPG https://en.wikipedia.org/wiki/File:Phosphorescent_pigment_blue_dark.JPG
Author: User:FK1954
Usage Terms: Creative Commons Zero, Public Domain Dedication
License: CC0
License Link: http://creativecommons.org/publicdomain/zero/1.0/deed.en
Attribution Required?: No
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