Glowing minerals. A number of different minerals appear to glow in the dark when they are energized by ultraviolet light, invisible to our eyes. They release this energy as light in a part of the spectrum we can see. This phenomenon is known as fluorescence.
Glowing minerals. A number of different minerals appear to glow in the dark when they are energized by ultraviolet light, invisible to our eyes. They release this energy as light in a part of the spectrum we can see. This phenomenon is known as fluorescence.
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Photo credit: © World History Archive / Alamy / Afripics
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Keywords: ., archival, archive, dark, energized, energy, eyes., fluorescence., geology, glow, glowing, historical, history, invisible, light, mineralogy, minerals, minerals., number, part, phenomenon, release, spectrum, ultraviolet
