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- DictionaryLu·mi·nes·cence/ˌlo͞oməˈnes(ə)ns/
noun
- 1. the emission of light by a substance that has not been heated, as in fluorescence and phosphorescence: "honey fungus produces a ghostly greenish luminescence"
noun
Luminescence is the "spontaneous emission of radiation from an electronically or vibrationally excited species not in thermal equilibrium with its environment". A luminescent object is emitting "cold light", in contrast to "incandescence", where an object only emits light after heating. Generally, the emission of light is due to the movement of electrons between different energy levels within an ... Wikipedia