Newall, H. F · London : Society for Promoting Christian Knowledge · leaf 38
arallelrays. Hence a parallel beam of red light incident onthe prism is still a parallel beam on emerging fromthe prism. If the original incident beam had beena beam of violet light instead of red, the deviationwould have been greater, so that the violet ray atP passed along the line P U instead of… … 32 THE SPECTROSCOPE AND ITS WORK [CHAP. the courses U U and V V—a parallel beam of violetlight. If the incident beam consisted only of red light therefracted light would form on the screen a red patchof a size equal to that of the cross section of thebeam. If the incident light had consisted only…
Spectroscope · Spectrum analysis
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
