Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site dciem.UUCP Path: utzoo!dciem!mmt From: mmt@dciem.UUCP (Martin Taylor) Newsgroups: net.misc Subject: re: the moon Message-ID: <439@dciem.UUCP> Date: Mon, 24-Oct-83 12:16:22 EDT Article-I.D.: dciem.439 Posted: Mon Oct 24 12:16:22 1983 Date-Received: Mon, 24-Oct-83 13:06:03 EDT References: <142@lzmi.UUCP> Organization: D.C.I.E.M, Toronto, Canada Lines: 9 The Moon Illusion has a venerable history, with theories going back to Plato. Some of what has been written to the net is now accepted as giving part of the illusion, but the atmospheric idea isn't one of them. The effect of the atmosphere is to squash the shape top to bottom into an ellipse, not to magnify it in any dimension. For a partial discussion, see Scientific American about 10 years ago (look in an index volume in the library). The illusion has many parts, and I can't remember most of them. Martin Taylor