Modern chromatics, with applications to art and industry (1879)
Rood, Ogden N. (Ogden Nicholas), 1831-1902 · New York, D. Appleton and Company · leaf 213
e forty-eighth of a second ; hence it is necessary for the disk to revolve forty-eight times in a sec- ond in order to produce the appearance of a steady; uniform ring of light. While, as just stated, the impression lasts with undimiaished strength for one forty-eighth of a sec- ond, its total… … Fie. 87.— Disk with White Sector. Fig. 88.— Disk" of Fig. 87 in Eapld Eotation. It is not, however, to be supposed that, in the experi- ment indicated in Fig. 88, the ring of white light will have the same degree of luminosity as its source, viz., the slip of white paper pasted on the black disk ;…
Color · Painting · Color in art
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
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