Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
ill observe a red ray from the primary and a violet ray from the secondary hoiv; while the eye 2 will observe the orange ray of the primary bow, and the indigo ray of the secondary bow; and so on, until the eye 7 will take in the violet ray of the ^rri- mary bow and the red ray of the secondary… … OPTICS. Uo JfSo. Figure 51.—Hew we see all the colors of the rain-bow from one position.—It has just been shown how, from differ-ent positions, nil the colors of the rainbow may be seen in one drop.It will be seen by this diagram, how, by a series of drops, all the colorscan be seen from o)ie…
Physics · Astronomy
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