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Scientific American, Vol. 88, No. 6 (1903) (1903)
leaf 7
ll the rays that are not red. Since there are no red of our illustrations is a reproduction of a photograph which is vaporized is constantly being replaced by the rays in the Cooper Hewitt lamp, the effect of the red of Mr. Hewitt and Lord Kelvin taken under this mer- condensed metal. It is on… … lamp consumes are of the most Lord Kelvin. Mr. Charles Merz, one-half watt per Trevalutioqn- © 1903 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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