Lockyer, Norman, Sir, 1836-1920, Seabroke, G. M. (George Mitchell), 1848-1918 · London, Macmillan and co. · leaf 429
Fig. 180.—Electric Lamp arranged for tliromng a spectrum ou a screen, d, lens ;E e, bisulphide of carbon prisms. prisms of glass containing bisulphide of carbon areplaced in the beam after it has traversed the lens, whichdraw out the image of the slit into a spectrum. Wecan then place a piece of… … Cop: it fronon th «• .sc-cf 3 tc-i — so p^i^ a SS 1—1 C oj a 5 03 o s-^-s S 3 =3 r9 - « U 2 S Fe. > f^ -t^f= 5 a .- CO p C o .oj S-S^ 3 « uh P o ^ ^^ O cj -^ s^ Pa., tS. c a ■--^ -^ O o g .--^^ 1=1 Fe. O tc _ Fe. a 2-3 oTna ^ a .^ =^:5 SO Fe. 2 >^2 Fe. - -. +3 Fe. o i; 3 Pk S.3 § o ® - J3 *r^…
Astronomy · Telescopes
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