Baly, E. C. C. (Edward Charles Cyril), b. 1871 · London, Longmans, Green · leaf 92
prism material whichare traversed by the two extreme rays of the beam. In aproperly constructed spectroscope in which the beam of lightfrom the collimator just completely fills the prism, s^ is zero,and Jj equals the thickness of the prism base t; therefore g - - - (10) This may readily be seen to… … this, however, is the value of ^ from Fraunhofers equation,^ and thus Now, by equations (9) and (10) it follows that, for theminimum condition of resolution, omitting the constant m— Sfi (>i) or in other words—in order that two lines may be seen separatedin a prism spectroscope, it is necessary…
Spectrum analysis
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