Soul Stories: Genapple

A uniform wave in a square boundary, perfectly reflecting off the boundary, creating interference patterns.
The wave pulses infinitely with a wavelength which is 1/14th the side of the square.
The wave also rotates in its axis as it grows.
This configuration is then topologically transformed into a horn-torus by pinching the edges of the square to a single point and attaching that point to the centre of the square from opposite poles.