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TeachMeFinance.com - explain Mount Wilson Magnetic Classifications Mount Wilson Magnetic Classifications The term 'Mount Wilson Magnetic Classifications' as it applies to the area of the weather can be defined as ' In solar-terrestrial terms, a classification system for sunspots: Alpha: Denotes a unipolar sunspot group. Beta: A sunspot group having both positive and negative magnetic polarities, with a simple and distinct division between the polarities. Beta-Gamma: A sunspot group that is bipolar but in which no continuous line can be drawn separating spots of opposite polarities. Delta: A complex magnetic configuration of a solar sunspot group consisting of opposite polarity umbrae within the same penumbra. Gamma: A complex active region in which the positive and negative polarities are so irregularly distributed as to prevent classification as a bipolar group'. Previous 5 Terms: Motor gasoline blending Motor gasoline blending components Motor speed MOU Mount Pinatubo Next 5 Terms: mountain and valley breezes Mountain Wave Mountain Wind System Mountainado Mountain-Plain Wind System About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.