Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/5/84; site mordor.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!ihnp4!zehntel!zinfandel!dual!mordor!space@mit-mc From: space@mit-mc Newsgroups: net.space Subject: Re: Re: Light Sails Message-ID: <861@mordor.UUCP> Date: Sat, 2-Mar-85 18:41:17 EST Article-I.D.: mordor.861 Posted: Sat Mar 2 18:41:17 1985 Date-Received: Mon, 4-Mar-85 20:36:27 EST Sender: daemon@mordor.UUCP Lines: 10 From: Rick McGeer (on an z29-e)I've said so many contradictory things about this issue that most of them must be wrong. As a result, I leave this to someone who knows more about physics than I do. However, Tipler, pp 958-960 seems to claim that the increased kinetic energy of a particle struck by a photon is due to the Compton effect, which I gave in my last note. I can't figure out what's wrong with the momentum calculations right at present, though... Rick.