Baly, E. C. C. (Edward Charles Cyril), b. 1871 · London, Longmans, Green · leaf 347
ercury yellow rays. The instrument isshown in its complete form in Fig. 129. One of the first applications of this interferometer was tothe study of the structure of certain spectrum lines by theexamination of the fringes they produce. It is necessary forthis purpose that the apparatus be only… … ^jMoifiA^ oj Fig. 129, analyse the light by passage through one or two carbonbisulphide prisms, and to focus the required rays upon a slit bymeans of a lens. A second lens receives the rays comingthrough the slit, and directs them as a converging beam uponthe silvered surfaces. At first the air…
Spectrum analysis
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