Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site decwrl.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!sdcsvax!dcdwest!ittvax!decvax!decwrl!dec-rhea!dec-rex!merrill From: merrill@rex.DEC Newsgroups: net.physics Subject: Re: Swimming in Liquid Helium Message-ID: <511@decwrl.UUCP> Date: Sat, 9-Feb-85 10:52:51 EST Article-I.D.: decwrl.511 Posted: Sat Feb 9 10:52:51 1985 Date-Received: Mon, 11-Feb-85 04:05:23 EST Sender: daemon@decwrl.UUCP Organization: DEC Engineering Network Lines: 15 > Thus, the kinetic energy of the object will he converted to kinetic > energy in the liquid. > Gordon V. Cormack CS Department, University of Waterloo Even in REAL water WAVES do not slow down noticably! An object in motion in a fluid without viscosity behaves like a wave. Assuming frictionless and perfectly elastic collisions, the balls (Neutonian "liquid") left behind have NO motion and hence have absorbed neither energy nor momentum. It DOES sound rediculous, doesn't it, but not too much more than swimming in liquid helium. Richard M. Merrill M.I.T.