01 A light produced by the incandescence of some substances, esp. lime, in the oxyhydrogen flame. Coal gas (producing the oxygas light), or tâĤ
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1.
A light produced by the incandescence of some substances, esp. lime, in the oxyhydrogen flame. Coal gas (producing the oxygas light), or the vapor of ether (oxyether light) or methylated spirit (oxyspirit light), may be substituted for hydrogen.