Abstract
In some cases it is of practical importance to petrologists to estimate the strength of the double-refraction exhibited by doubly-refracting minerals in thin slices of rock under the microscope.Babinet's compensator, a description of which will be found in Rosenbusch's Microskopische Physiographic der Mineralien und Gesteine, affords a means of accurately calculating the refractive indices of the rays into which light is divided in its passage through doublyrefracting crystals. Michael-Lévy also devised another exact method based on observations made on the tints presented by slices of doublyrefracting minerals, an account of which appeared in the Bulletin de la Societe Mineralogique de France, and which is discussed in a work recently published by Michael-Lévy and Lacroix.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.