Andrews, Ernest John, 1863-, Howland, Howard Newell, 1865- joint author · New York, London, The Macmillan company · leaf 377
parts: the appa-ratus for controlling the light before refraction^ the apparatusfor refracting the lights and the apparatus for controlling thelight after refraction. 362 LIGHT [§§ 605-606 The light is controlled before refraction by the colli-mator C. This consists of a brass tube, at the outer… … Passing from the collimator the beam strikes the refract-ing apparatus, which consists ordinarily of a glass prism P,or, if much dispersion is desired, several prisms properlyarranged. From the prism the light passes into a telescope T whichmagnifies the spectrum to be viewed by the eye, the…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
