Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site cstvax.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!mcnc!philabs!cmcl2!seismo!mcvax!ukc!cstvax!gdmr From: gdmr@cstvax.UUCP (George D M Ross) Newsgroups: net.physics Subject: Re: Possibly poor control? Message-ID: <302@cstvax.UUCP> Date: Sat, 29-Jun-85 01:27:46 EDT Article-I.D.: cstvax.302 Posted: Sat Jun 29 01:27:46 1985 Date-Received: Sun, 30-Jun-85 02:56:57 EDT References: <2784@decwrl.UUCP> Reply-To: gdmr@cstvax.UUCP (George D M Ross) Organization: Comp. Sc., Edinburgh Univ., Scotland Lines: 18 In article <2784@decwrl.UUCP> wasser@viking.DEC (John A. Wasser) writes: > I suspect that no matter WHO did the observing, the light will > (for selected periods of time) make rather large excursions > to the left and right..... From "The Theory of Stochastic Processes" by D.R. Cox and H.D. Miller (just after example 2.7): "Thus an unrestricted particle, if allowed sufficient time, is certain to make indefinitely large excursions from its starting point and is also certain to return to its starting point." It's probably in Feller somewhere too. -- George D M Ross, Dept. of Computer Science, Univ. of Edinburgh Phone: +44 31-667 1081 x2730 UUCP:!ukc!{hwcs,kcl-cs,ucl-cs,edcaad}!cstvax!gdmr JANET: gdmr@UK.AC.ed.cstvax or gdmr@UK.AC.ed.ecsvax