Power BI Story in PPT Slides with Comments. Sinhala song download. ![]() • -- David Hirsch, Western Washington Univ.; This activity consists of a set of 69 mineral sheets to be used as part of a term-length set of labs. Each sheet has spaces to write physical and optical properties for each mineral as well as a crystal form diagram scanned from Nesse and/or Dana. • -- Hans Dieter Zimmermann; The purpose of the experiments below is to impart an intuitive understanding of the interaction between light and crystals and thus, of optical crystallography. This will help to demystify what is seen in the polarizing microscope and will better prepare students for the introduction of optical indicatrices as 3-D models to describe the directional dependence of light velocities, and thus refractive indices in anisotropic crystals. • -- Mickey Gunter, University of Idaho; The goal of this lab session is to introduce you to the spindle stage and its possible uses in an undergraduate mineralogy lab. At the undergraduate level, it can be used to identify minerals and to demonstrate the relationships among grain shape, retardation, and interference figures. • -- Edward Stoddard, North Carolina State Univ.; I've always thought that we might attract a major or two if we introduced first-year students to interference colors and such. Therefore, this exercise is primarily intended to be used in an introductory (physical) geology class, perhaps for advanced students or as an extra credit project. It may also be appropriate as a brief introduction ('teaser'?) to optics in a mineralogy or optical class. • -- Paul Sorensen and Dexter Perkins, Univ. Rock Science Slide Tutorial Pdf FreeNorth Dakota; Many compounds crystallize rapidly from evaporating solutions, and many can be crystallized from melts. Because of this, it is possible to do simple crystallization experiments and to watch crystals grow over short time periods. Students can study several different compounds during one lab period. Students can examine many things quickly and easily, including crystal habit, growth zones, nucleation, deformation textures. • -- Dexter Perkins, Univ.
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