Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 488
ordispersing the rays. It can be used equally well for seeing the bright lines 436 THE SPECTROSCOPE. of metals and the Fraunhofer lines, and for viewing any two spectra simul-taneously. These direct-vision spectroscopes are better adapted for generaJuse by those who have not several different… … Fig. 227,—Section of Micro-S-pedroscope. CELESTIAL CHEMISTRY AND PHYSICS. X^rE now approach that portion of our subject in which its interest cul-* * minates, for however remarkable may be some of the above-namedresults of this searching optical analysis, they are surpassed by those whichhave been…
Inventions
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