MacMunn, Charles Alexander · London, Churchill · leaf 31
or other Fraunhofer line. * The compa/ratively cool sodium vapour, in the suns atmosphere,absorbs the rays of inccmdesceni sodium vapour from the sodium burningin the sun. 10 CHEMICAL SPECTEOSOOPES. CHAPTER II. INSTRUMENTS, AND METHODS OF USING THEM, ETC. Chemical Spectroscopes—The one-prism… … prism, and an observing telescope; the small wheelrepresented beneath the right-hand tube is for clamp-ing it in any required position. The right-hand tubehas attached to it an arm carrying a vernier, whichmoves on a graduated arc of a circle divided intodegrees and minutes ; the use of this will…
Spectrum analysis · Diagnosis, Spectroscopic
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