English: Rotary S.W.I.M. (Sequential Wave Imprinting Machine) showing rotating magnetic field of a motor in polar stationary coordinates as part of a live lecture demonstration in a teaching auditorium lecture hall at University of Toronto
Rotary SWIM, invented by S. Mann in the 1960s and 1970s, is commonly used in research and teaching, to see and photograph the rotating magnetic field of a motor.
Here we see the three capabilities of SWIM: live display of text, graphics (plotted functions) and images such as the graticule and the "center" symbol image.
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