Cecil Moore wrote:
On Jan 11, 2:12 pm, Jim Kelley wrote:

Cecil Moore wrote:

On Jan 10, 9:23 pm, Jim Kelley wrote:

A standing wave is an amplitude vs position envelope.


A standing wave has an associated envelope but the envelope is *NOT*
the wave itself.

No, it's plot of the equation - just like any other plot one might
make of it. It simply a plot of amplitude vs position at a fixed time.

Jeez, Cecil. You really do need a life, man.

By the way, you forgot to give the Poynting vector for a modulation
envelope. () (it's a clown) :-)

regards, ac6xg