Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 452
Fig. 195.—Side view of Spectrcscope, showing the arrangement by which thelight from a spark is thrown into the iustrumeut by means of the reflectingprism, e, by a mirror F. (Muggins.) … Fig. 196.—Plan of Spectroscope, t, eyepiece end of telescope, b interior tube,carrying A, cylindrical lens ; D, slit of spectroscop)e ; G, collimating lens ;h h, prisms ; Q, micrometer. (Huggins.) reflects the light through the slit of the spectroscope tothe prisms and eye ; if the instrument were…
Astronomy · Telescopes
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