New acquisitions of the Mineralogical Institute

Abstract

Currently, crystallography widely uses graphic techniques to solve its problems. Increasing accuracy is also one of the goals set in the development of graphical operations. As for the design of the new device, we mainly note the much larger dimensions of the device, of which the black hemisphere, as the main working part of the device, has a diameter of about a yard. The second device is a universal touch goniometer with three axes. It is used for ordinary measurement using the universal method of crystals so large that they can no longer be mounted on the crystal carrier of ordinary goniometers. The third device is designed to facilitate the crystallization process. The principle of operation consists in rhythmic heating and cooling of a vessel with a solution in which crystallization occurs.