Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site rtp47.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!mcnc!rti-sel!rtp47!throopw From: throopw@rtp47.UUCP (Wayne Throop) Newsgroups: net.sf-lovers Subject: Re: FTL, imaginary mass, etc. Message-ID: <156@rtp47.UUCP> Date: Thu, 22-Aug-85 12:47:42 EDT Article-I.D.: rtp47.156 Posted: Thu Aug 22 12:47:42 1985 Date-Received: Sun, 25-Aug-85 06:16:02 EDT References: <2702@topaz.ARPA> <1622@orca.UUCP> <813@ncoast.UUCP> <436@utastro.UUCP> <154@iitcs.UUCP> <840@ncoast.UUCP> Organization: Data General, RTP, NC Lines: 11 > Now, we all know that FTL implies traveling backwards in time... > > Therefore, tachyons just might be identical to antimatter. What kind of mass > does an antiparticle have? Nope. Tachyons are particles with a space-like world-line (and have never been observed). Antiparticles have a time-like world-line, but it is (or may be) "going" pastwards relative to particles. Antiparticles have good old regular, ordinary, positive mass. -- Wayne Throop at Data General, RTP, NC!mcnc!rti-sel!rtp47!throopw