I understand perfectly well how standing waves work. A standing wave is the sum of two traveling waves moving in opposite direction.

It is also interesting that it has been proven that a spherical standing wave is equivalent to a large number of plane waves traveling through a point (with common phase). I think that this has been a stumbling block even to intelligent physicists who have not visualized how waves can be continually re-formed. Feynman and Wheeler got close to recognizing the electron as a standing wave and nothing else with their advanced and retarded waves. But they couldn't see the advanced wave as natural and talked about it going backwards in time. No such thinking is needed, it is a natural convergence of the waves as the cymatics experiments show.

This is demonstrated in 2D in the cymatics example in my 2nd video where all the waves support each other in correct phase and also support radial wave trains that bounced off the edges. In a larger space, these additional wave trains can be used to tile the plane making an infinite set of mutually supporting waves if desired, or in 3D space filling options exist, including cubic, rhombic dodecahedra and others.