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.
> > 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
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
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