| 单词 | osmium lamp |
| 释义 | > as lemmasosmium lamp osmium lamp n. now rare an electric lamp in which the filament is made of osmium. ΘΚΠ the world > matter > light > artificial light > an artificial light > artificial light defined by light-source > electric light > [noun] > filament lamp > other type of osmium lamp1907 1907 Westm. Gaz. 16 Feb. 14/2 The osmium lamp..was expensive to start with, and could be used only in the pendent position. 1952 H. Hewitt Mod. Lighting Technique iv. 34 Whilst further developments such as the Nernst lamp, the osmium lamp and the tantalum lamp were all of technical interest, it was not until the adoption of the tungsten filament by Coolidge in 1909 that there was any considerable advance towards more efficient electric lamps. < as lemmas |
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