Phosphorescence is a type of photoluminescence related to fluorescence. When exposed to light (radiation) of a shorter threshold wavelength, a phosphorescent substance will glow, absorbing the light and reemitting it at a longer wavelength.
Phosphorescence is a type of photoluminescence related to fluorescence. When exposed to light (radiation) of a shorter threshold wavelength, a phosphorescent substance will glow, absorbing the light and reemitting it at a longer wavelength.
Source: Wikipedia "Phosphorescence" · CC BY-SA 4.0
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