Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 916
event oxidationof the iron. From thirty to ninety seconds are required from the moment the currentis switched on for the proper incandescence to be attained. This is one ofthe disadvantages of the lamp. The efficiency of the Nernst lamp is statedto be twice that of the carbon filament lamp. 866.… … Fig. 853A -866] Electric Furnace 891 higher temperatures than those at which carbonic acid and water are decom-posed. Direct experiments by Siemens with the electric arc showed not onlythat it produces a very high temperature within a contracted space, but alsothat it will conveniently and…
Physics
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