Open AccessThe refractive indices of fluorite, quartz, and calcite
Publication year - 1902
Publication title -
proceedings of the royal society of london
Language(s) - English
Resource type - Journals
eISSN - 2053-9126
pISSN - 0370-1662
DOI - 10.1098/rspl.1902.0033
Subject(s) - fluorite , calcite , quartz , geology , mineralogy , optics , materials science , physics , metallurgy , paleontology
1.Method of Observation .—Measurements of fluorite, quartz, and calcite have been made by Rudberg, Mascart, Cornu, Sarasin, Glazebrook, Van der Willigen, Vogel, Pulfrich, Rubens, Baille, and many others. Those now offered were originally undertaken with the view of further extending the range and accuracy of lenses constructed of these substances. A new method of obtaining the refractive indices has been adopted. Each of the angles of the prisms used was as nearly as possible 60°.