You only get a standing wave if the wave generated by the source is reflected back so you have to know what is at the other end of the line. A guitar string can give a standing wave because the other end has something to reflect off of but a string with only one end secured can't. You show a pretty picture of standing waves but how do they relate to waves in the body produced by Spooky connected to it causing complex currents of frequencies with wavelengths of hundreds of meters? To get a wavelength of a size to fit in the body like a 1m wavelength you would have to use a frequency of 300 MHz.
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