单词 | cold light |
释义 | > as lemmascold light cold light n. light that is accompanied by little or no heat, e.g. luminescence. ΘΚΠ the world > matter > light > light emitted under particular conditions > [noun] > luminescence cold light1894 luminescence1908 1894 Electr. World 6 Oct. 328 Cold Light... Apparatus..to produce light by means of high frequency electric currents, without converting most of the energy into heat. 1936 Nature 5 Dec. 974/1 It..makes available a ‘permanent’ source of ‘cold’ light. 1959 Chambers's Encycl. VIII. 723/2 To produce ‘cold light’, or luminescence, the molecules of a substance must be stimulated to emit light by the reception of some form of energy. < as lemmas |
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