Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 115
r a luminous object a star, therays of which, coming from a distance which is prac-tically infinite, to the surface of the earth, may beconsidered exactly parallel. The direction of the beamsof light coming from the star, and falling on the 92 STARGAZIXG : PAST AND PRESENT. [book ii. mirror formed… … Fig. 48.—Experimental Proof that the Angle of Incidence = Angle of Reflection. s i n, equal to the angle s, i, n, is the angle of inci-dence, that is to say, that formed by the luminous raywith the normal to the surface at the point of incidence.In order to find the direction of the reflected…
Astronomy · Telescopes
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