Austin, Louis W. (Louis Winslow), 1867-1932, Thwing, Charles B. (Charles Burton), 1860-1946, joint author · Boston, Allyn and Bacon · leaf 124
ontaining a little sodiumsalt. Point the telescope at the slit, andnote the reading of the verniers a1. Thenplace the prism on the table as shown inFig. 57, and move the telescope until therefracted image coincides with the cross-hair, and slowly move bothprism and telescope till, inwhichever… … Fig 57. 112 PHYSICAL MEASUREMENT. SPECTRUM ANALYSIS. The spectra obtained by allowing a ray of light topass through a prism are of three sorts: — I. The continuous spectrum given by a body in thesolid or liquid form heated to incandescence. It showsthe colors of the rainbow in regular order, from…
Physics
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