Archived posting to the Leica Users Group, 2009/12/31
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Nathan is right. According to Wikipedia, the *Moon illusion* is an optical illusion <javascript:searchWiki(> in which the Moon <javascript:searchWiki(>appears larger near the horizon <javascript:searchWiki(> than it does while higher up in the sky<javascript:searchWiki(>. This optical illusion also occurs with the sun <javascript:searchWiki(> and star constellations <javascript:searchWiki(>. It has been studied since ancient times, and numerous explanations have been offered. The phenomenon appear to be primarily psychological since accurate measurement by instruments or by photography show that the visual angle subtended (about 30 minutes) by the Moon at the horizon is the same as at the zenith. Larry Z