Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 80
- the dotted line. This bending of the ray CHAP, v.] THE REFRACTION OF LIGHT. 57 ivS very jjlainly sliown with an electric lamp and screen.If a trough with parallel sides be placed so as to inter-cept part of the light coming from the electric lamp, … Ficj. 21.— Deviation of Liglit in Passing at Various Incidences tlirougli Prisms of Various Angles. so that part shall pass through it and part above,we liaAe the image of the hole in the diaphragm of the lantern on the screen unchanged. Now, if the trougli be filled with water, no difference…
Astronomy · Telescopes
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