rized light, will be necessary to determine thetrue position of the absorption band. The bands at 4.1 and 4.5^^^are in common with the feldspars. 5. Beryl {Be^ AQ {Si O^^.—[Rod, 10 X 3 mm. Energy, 7 to8 watts. Curve a. Fig. 4.] The rod was an opalescent, milkyglass, although the original crystal… … i68 Bulletin of the Bureau of Standards. [ Vol. 5, No. 2. apparent temperature was probably about iioo°. The emissionspectrum is unusual in appearance, with a sharp maximum super-posed upon it at 2.8/Lt. There appear to be other ill-definedmaxima at 1.7, 2.4, 2.9(?), 3.6, 4.4, and 4.8/>t,…
Rays and radiation · Light reflection · Spectra
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