Commonly referred to as phosphorescence, persistent luminescence is the emission of light by a phosphorescent material after an excitation by ultraviolet or visible light. == Mechanism == The mechanism underlying this phenomenon is not fully understood.
Commonly referred to as phosphorescence, persistent luminescence is the emission of light by a phosphorescent material after an excitation by ultraviolet or visible light. == Mechanism == The mechanism underlying this phenomenon is not fully understood.
Source: Wikipedia "Persistent luminescence" · CC BY-SA 4.0
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