Standing wave in reverse bifilar coil?

[citfta]

Standing waves

Sorry Leviathan but I have to disagree about there not being any standing waves. Every Ham radio operator in the world and probably every CBer knows what a SWR meter is. It measures the standing wave ratio of your feedline and antenna combination. It measures the ratio of power going to the antenna and the power being reflected back to the transmitter. Ideally we want all the power to be radiated by the antenna and not back to the transmitter as reflected power is wasted and can damage the transmitter. I don't think this is exactly the same as what Alvaro is referring to with his coil but standing waves do exist.

yup I have, and it was nothing detectable with my equipment. It may help
to understand that the very concept of a wave is that a wave has a velocity
if you say a wave is standing that is a contradiction because if it is standing
then it is not a wave, if it did creat any effect it would probably be similar
to a pressure not a wave. So how would you detect a pressure? But first
you would have to think about what medium the pressure is created in, and
then maby you could detect it.

Carroll

[Leviathan]

I think you misunderstand what is ment by a standing wave, the electromagnetic
wave itself is constantly traveling outward at a velocity, while a different wave is
traveling in the opposite direction, the reason it is called a standing
wave is because all the nodes of each wave are in the same spot, this is done
by tuning for the correct frenquency at a given propagaiton velocity. The electromagnetic
energy of the wave at any point in space is constantly oscillating (except for the nodes which are alwase at 0).
The energy of the wave is in no way "standing". Example of standing electromagnetic
energy would be a DC electromagnet.If you have two opositely wound electromagnetic
fields, the standing fields cansel eachother out leaving no electromagnetic field.

[alvarohn]

Longitudinal wave

If you have two opositely wound electromagnetic
fields, the standing fields cansel eachother out leaving no electromagnetic field.

I think that pulsing a coil like that, would make something like what Bob Smith posted about the caduceus coil, it would be a scalar wave transmiter.

a Longitudinal wave