+Luminescence is the emission of light by a substance not resulting from heat. This "cold light" occurs when energy absorbed by an atom or molecule is re-emitted as [photons](/wiki/photon), often through processes like [Fluorescence](/wiki/fluorescence) or Phosphorescence.
+## See also
+- [Light](/wiki/light)
+- [Energy](/wiki/energy)
+- [Bioluminescence](/wiki/bioluminescence)
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