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You said "The wave in an electrical conductor is moving much faster than the electrons" How so? Sorry for my ignorance, but what is a wave, then?

A wave is information that is moving forward. Let's say we fill peas in a pipe, one after another. Put the pipe on a table, with both ends open. Push the first pea on one side: This will push the next pea, which pushes the next and so on until the last pea moves. The individual peas have just moved a little, but nevertheless we have transferred the movement all the way to the other end of the pipe. As you can see, the speed of the individual peas is lower than the speed of the pulse (wave).

The same phenomenon can be observed if you stand by the sea: The waves are moving much faster towards the shore than the water itself: You see floating object go up and down, not just rushing towards the shore.

In some cases the wave is in fact moving slower than the particles are. If you are running, the noise you make will always preceed you because the sound (wave) is faster than you. But if you fly an airplane faster than the speed of sound, the molecules in the air will be moving faster than the wave. The result is that the air ahead of the plane are has no idea that the the plane is approaching. Therefore nobody can hear it, until the plane reaches them. (Ok, in reality the air immediately around the plane is moving above the speed of sound relative the surroundings, but below the speed of sound relative the plane. Therefore there is a shockwave immediately in front of the plane where this air collides with the still air)

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"Superimposing two currents of different frequency will not cause electrons to go in different directions ... at the same time since the cloud follows the resulting total waveform. There will not be two separate waves that propagate via different electrons." You say that that the cloud follows the resulting total wave form. Then how are seperate wave signals sent on existing electrical networks?

I'll have to think before I answer that one. I'll be back... [Linked Image]