undulose extinction In optical mineralogy, the irregular or wavy extinction seen in thin sections of mineral grains (e.g. quartz) on rotation of the stage. Different parts of the grain go into extinction in different orientations. The phenomenon is thought to result from strain, which may modify crystal orientation slightly.
More From encyclopedia.com
Compass Orientation , compass orientation The ability to head in a particular compass direction without reference to landmarks possessed by many migratory birds (e.g. star… Oriental Faunal Region , Oriental faunal region The area that encompasses India and Asia south of the Himalayan–Tibetan mountain barrier, and the Australasian archipelago, ex… Orientalism , ORIENTALISM . Once associated with the exotic "Eastern" themes and styles of Eugene Delacroix's, James McNeill Whistler's, and John Singer Sargent's… Reality Orientation , REALITY ORIENTATION Reality Orientation (RO) is a general philosophy of inpatient treatment for reducing confusion in geriatric patients. According t… Hepatomegaly , hepatomegaly Enlargement of the liver as a result of congestion (e.g. in heart failure), inflammation or fatty infiltration (as in kwashiorkor). hepa… Orientation , ORIENTATION . Symbols of space and its order most clearly illustrate the religious act of orientation, that is, the fundamental process of situating…
About this article
Updated About encyclopedia.com content Print Article
You Might Also Like