Laurence, Lionel · London, School of Optics · leaf 223
ium of which the prismis formed, with the angle of the prism, and with the angle of incidence of thelight. The Refraction Spectrum.—The source should be the sun or a brightartificial luminant and the light should be admitted through a small horizontal CHROMATIC ABERRATION 211 aperture A (Fig. 223),… … Fig. 223. The resultant spectrum is received on a screen, but it is impure because adja-cent colours overlap each other. If, however, an achromatic bi-convex lensL be placed close to the prism, with the aperture and screen at approximatelytwice its focal distance on either side of it, the various…
Optics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
