Austin, Louis W. (Louis Winslow), 1867-1932, Thwing, Charles B. (Charles Burton), 1860-1946, joint author · Boston, Allyn and Bacon · leaf 127
the wave-lengths of the lines. From Tables 31and 32 find what metals were present in the mixture. The spectra of the less volatile metals may be studiedby allowing the spark from a Ruhmkorffs coil to playbefore the slit, the terminals being of the metal to bestudied; the spectra of gases by viewing… … Fig. 60. may be considered two sources of light. If any point, p,on a screes is farther from one of the openings than fromthe other by a distance S sin 0= I A, where S is the dis- SPECTRUM ANALYSIS. 115 tance apart of the slits, and 0 the angle between S p, andthe perpendicular from S upon the…
Physics
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