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Re: trivial pedagogy

Oops, it meant to be:

If the wire is moved by a distance z=v*t then the phase to subtract
must by 2*PI*(v*t)/T. The mathematical description becomes
y=A*sin[2*Pi(x/L-v*t/T].

Sorry for the (v*t/L) in my last night message.
Ludwik Kowalski