Image: Phosphorescent pigments, in light, in dark, after 4 min - zinc sulfide and strontium aluminate
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Description: Phosphorescent pigments zinc sulfide and strontium aluminate, in visible light, in darkness, and after 4 minutes in the dark.
Title: Phosphorescent pigments, in light, in dark, after 4 min - zinc sulfide and strontium aluminate
Credit: Derivative work, combining these three photos from Wikipedia: https://en.wikipedia.org/wiki/File:Phosphorescent_pigments.jpg https://en.wikipedia.org/wiki/File:Phosphorescent_pigments_1_min.jpg https://en.wikipedia.org/wiki/File:Phosphorescent_pigments_4_min.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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