Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 361
ly because of the tendency tochemical change which most pig-ments have. In modern picture windows, which in the hands of Tiffany and La Farge have become genuine works of art, the effects are often produced by doubling or even tripling the glass. Eobes of royal purple are thus obtained by separate… … Fig. Green 236. —Complementary-colors. REFRACTION OF LIGHT 339 rapidity of vibrations and increasing the wave lengthsmight change chemical rays to light rays and light raysto heat rays, or change light rays of one kind into thoseof another kind. Quite a number of substances possessthis power.…
Physics
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