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luminescence
The non-thermal emission of electromagnetic radiation, particularly light, from a substance after it has been stimulated in some way other than by high temperatures. In this respect it differs from incandescence. Examples include photoluminescence (including fluorescence and phosphorescence), chemiluminescence (including bioluminescence), and triboluminescence.
Related categories
• OPTICS AND OPTICAL PHENOMENA
• ATOMIC AND NUCLEAR PHYSICS
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