Re: Light Exceeds Its Own Speed Limit, or Does It?

2000-05-30 Thread Eric Cordian
Michael Motyka writes: > I'm a bit rusty but isn't it the other way around? Phase velocity may > exceed 55mph( 25 in a school zone ) but group velocity ( information, > energy ) is limited? I thought the envelope was what carried energy. Group velocity is the speed at which the envelope moves.

Re: Light Exceeds Its Own Speed Limit, or Does It?

2000-05-31 Thread lcs Mixmaster Remailer
> > I'm a bit rusty but isn't it the other way around? Phase velocity may > > exceed 55mph( 25 in a school zone ) but group velocity ( information, > > energy ) is limited? I thought the envelope was what carried energy. > > Group velocity is the speed at which the envelope moves. Phase velocity

Re: Light Exceeds Its Own Speed Limit, or Does It?

2000-05-31 Thread Eric Cordian
An anonymous person writes: >> Group velocity is the speed at which the envelope moves. Phase >> velocity is the speed at which the peaks move, and is constrained to be >> the speed of light in the medium. Group velocity is the speed at which >> energy is transported, but signalling cannot be d