> I thought the product of phase and group velocities had to be c^2? Only if they are equal. The phase velocity can become infinite depending on the angle of incidence of a wave on a surface. Take a stroll down to the beach. :-)
Fred > [Original Message] > From: Robin van Spaandonk <[EMAIL PROTECTED]> > To: <[email protected]> > Date: 12/6/2006 7:47:18 AM > Subject: Re: [Vo]: Re: The Alpha Bet > > In reply to Frederick Sparber's message of Tue, 5 Dec 2006 02:44:09 -0700: > Hi Fred, > [snip] > >From this, the Phase velocity in a particle equals c, > >and the Group velocity = c/137. Or is the Phase Velocity 137 * c? > [snip] > I thought the product of phase and group velocities had to be c^2? > > Regards, > > Robin van Spaandonk > > http://users.bigpond.net.au/rvanspaa/ > > Competition provides the motivation, > Cooperation provides the means.
