Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 222
CS. The light used in a small lantern is a simple kerosenelamp. But for use in large halls, the Calcium Light, madeby placing a stick of lime in the flame of burning oxygenand hydrogen mixed, is employed. Sometimes also theElectric Light is used.* Section IV.—The Spectroscope. 730. The spectroscope… … and ready for use, but omitting the measuring telescope,with its millimetre scale. It depends upon the unequalrefrangibility of different colored light.f The spectroscope consists of a prism, P, to produce the spec-trum, a telescope, A, through which the spectrum is Viewed, soenlarged that only a…
Physics
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