Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 394
o magnify it.Fig. 283 represents the simplest form of the Kirchhoif andBunsen spectroscope. A flint glass prism receives lightthrough an adjustable slit at the end of a tube called the SPECTROSCOPES. 375 collimator. At the opposite end of this tube is a converginglens, and the slit is locatedat its… … JflG. 283. observed in the spectrum. The usual method is to have asecond tube, somewhat like the collimating tube, so placedthat the rays from a light {e.g. a candle flame as in Pig.283) after passing through a transparent plate (inside thetube) on which a fine scale is engraved, and through a…
Physics
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