dot angel
dot angel
[′dät ‚ān·jəl] (electromagnetism)
An angel that appears on the screens of vertically pointing radars, often on clear cloudless days, as a bright dot; believed to be produced by a vertical column of rising air passing through air layers having different indices of refraction.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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