Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site amdahl.UUCP Path: utzoo!utcs!lsuc!pesnta!amdcad!amdahl!ems From: ems@amdahl.UUCP (ems) Newsgroups: net.space Subject: Re: Light Sails Message-ID: <1227@amdahl.UUCP> Date: Mon, 4-Mar-85 20:16:34 EST Article-I.D.: amdahl.1227 Posted: Mon Mar 4 20:16:34 1985 Date-Received: Wed, 6-Mar-85 00:42:34 EST References: <722@mordor.UUCP> <133@uwvax.UUCP> <349@desint.UUCP> Organization: Circle C Shellfish Ranch, Shores-of-the-Pacific, Ca Lines: 18 > > (b) Momentum and energy are two different things. Momentum must still be > conserved in this collision; in this case the system (including the > absorbed photon) must retain 1 frobozz away from the sun. This means that > the photon will be slowed dramatically. Ah, I think you may have meant something else here. Like maybe the wavelength would change or some such. I'm not real up on my physics, but I thought that C was a constant... (Until the ANSI committies get done with it ? :-) E. Michael Smith ...!{hplabs,ihnp4,amd,nsc}!amdahl!ems Computo ergo sum The opinions expressed by me are not representative of those of any other person - natural, unnatural, or fictional - and only marginally reflect my opinions as strained by the language.