Article View: sci.physics
Article #2457Re: FTL
From: Johan Wevers
Date: Mon, 17 Aug 1992 14:22
Date: Mon, 17 Aug 1992 14:22
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1794 bytes
Nir.Oren@f54.n7101.z5.fidonet.org (Nir Oren) writes: >Using the uncertanty principle, is it possible to travel faster than >the speed of light: A particles exact speed can't be mesured >ks>|for an exact period of time, therefore, could one not exceed >the speed of light, if he were then to slow down below it for an >equal ( or slightly greater) amount of time? That's true. According to Feynman's book ``QCD'', the traveling of a photon is can be described as a combination of a lot of Feynman diagrams, in which the photon sometimes decays into a particle- antiparticle pair, and so on. As far as I understood it, each (virtual) photon traveled with speed c, but the net result was an uncertancy on macroscopic scale. However, usually this uncertancy is very small, but maybe measurable. I'm not an expert on this subject, so please correct me if I put something not totally correct. ******************************************************************** * J.C.A. Wevers * u\ _\ /e+ 2 * * johan@blade.stack.urc.tue.nl * 1 | \ u \ X / | * ******************************** P = - | > >---< + ...| * * The only nature of * N | / / \ | * * reality is physics * u/ /d u\ * ********************************************************************
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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!sun4nl!tuegate.tue.nl!blade!johan From: johan@blade.stack.urc.tue.nl (Johan Wevers) Newsgroups: sci.physics Subject: Re: FTL Message-ID: <5087@tuegate.tue.nl> Date: 17 Aug 92 14:22:48 GMT References: <1830.2A8E1404@catpe.alt.za> Sender: root@tuegate.tue.nl Organization: MCGV Stack, Eindhoven University of Technology, the Netherlands. Lines: 26