Baly, E. C. C. (Edward Charles Cyril), b. 1871 · London, Longmans, Green · leaf 289
ich could in any way do justice to it. Onesection of it only can be mentioned here, namely, the dispersionof fluorite. In this investigation it was necessary to employa linear bolometer, and not a surface instrument such as wasdescribed above; the three platinum strips, used in the lattercase, were… … Fig. 104. 272 SPECTROSCOPY sensitiveness as the former instrument. One of Rowlandsgratings was used, which had been specially ruled for Langley.This grating had a ruled surface of 132 mm., with i42i linesto the millimetre, and a focus of i753 metres. The results ofthese measurements are given in…
Spectrum analysis
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