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Scientific American, Vol. 88, No. 6 (February 1903) (1903)

leaf 7

An illustration from Scientific American, Vol. 88, No. 6 (February 1903), 1903, leaf 7
f our illustrations is a reproduction of a photograph all the rays that are not red. Since there are no red 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 tfr. George Weetinghouse. Lord Kelvin. Mr. Charles Merz. one-half watt per revolution- WATCHING A TEST OF THE COOPER HEWITT CONVERTER. © 1903 SCIENTIFIC AMERICAN, INC.

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