The principles of light and color : including among other things the harmonic laws of the universe, the etherio-atomic philosophy of force, chromo chemistry, chromo therapeutics, and the general philosophy of the fine forces, together with numerous discoveries and practical applications. Illustrated by more than two hundred engravings and four colored plates (1896)
Babbitt, Edwin D. (Edwin Dwight), 1828-1905 · East Orange, N. J., Pub. by the author at the College of Fine Forces · leaf 42
GRADATION OR PROGRESSION. *9 Fig. S3- Vibrations of compoundsounds. Fig. 54. Combination of twoparallel vibratory movements. … devised by Savart. Fig. 54 has gradations of size and direction,and was written in lamp-black by a combination of tuning forks.Fig. 55 is an example of progressive rings of colored light,which were produced by electricity, as seenand drawn by an artist and quoted by Dr.Jerome Kidder of New York, in…
Color
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