but in Those coming through H are composed of waves of two dif- BT PBXStSSin BIITBT UOBTOH'. substituting violet light, a remarkable change took place. ferent kinds; they are bent differently and appear separated The spring course of lectures at the Stevens Institute o The colored picture remained… … in reference to light. With their nature, but which he Fig. 2. green light and red light, cannot reach with the means the screen gave no answer; but with blue light, the word those coming through O are composed of many colors or at present at his command. After having frequently acted as waves of…
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