Baly, E. C. C. (Edward Charles Cyril), b. 1871 · London, Longmans, Green · leaf 273
under the prism, and thereis an arrangement for always keeping the latter in theposition of minimum deviation. The readings of the angleof deviation produced by the prism could be read accuratelyto i of arc. The grating was one ruled by Rowland, with Nature, 26. 314 (1882) j Brit. Ass. Rep., 1882,… … Fig. 96. 256 SPECTROSCOPY The method of experiment with the apparatus can be veryshortly described, best in Langleys own words. The apparatushaving been previously adjusted, and the sunlight properlydirected by the heliostat, the visible Fraunhofer line D2 of thethird spectrum of the grating was…
Spectrum analysis
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