Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 481
ated metal takes the form of glowing gas, a small quantity ofwhich suffices for the production of the bright lines. No doubt the otherconstituent of the compound, the chlorine for example, is also set free inthe gaseous form ; but since the spectrum of the metal only is visible, wemay infer that at… … Fig. 222.—Brownings Automatic Adjustment of Prisms, the temperature of the flame not being sufficiently high to convert theseinto vapour. Other methods have, therefore, to be resorted to, and advan-tage is taken of the fact discovered by Faraday, that an electric spark isnothing but highly heated…
Inventions
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