Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 239
2l6 EXPERIMENTAL SCIENCE. having the highest rate capable of affecting the eye are per-ceived as violet, while those of the lowest rate are perceivedas red. According to Ogden Roods Modern Chromatics,the rate of the former is 757 billions of waves per second, … that ot the latter is 395 billions of waves per second, andbetween these extremes are ranged waves of every possi-ble rate, representing as many colors. When light waves ofall periods are mingled, there is no color—the light is white. LIGHT. 217 Newton discovered a way of resolving white light into…
Physics · Lantern projection · Electric apparatus and appliances
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