Alright, this is nice in that the meaning of rest mass is the curling up of the wavefront to become a closed loop. This is nice because it allows both concepts of rest-mass along with perpetual-motion to endure as one. The concept of perpetual motion and the concept of rest mass seem to be at odds with one another. If you have rest mass, seems as though you should not have perpetual motion such as a electron or proton, but if you have no rest mass, then you should have always perpetual motion as in the photon. Yet the electron and proton inside an atom have perpetual motion despite them having rest mass.
So how can one logically fix all those loose ends into a coherent whole?
The answer is obvious now, that we know what rest-mass means. It means that the front edge of the electron or proton wavefront starts curling around until it forms a closed loop, like in Faraday's law the closed loop of wire. Only the closed loop can be 2nd dimensional as a ring or even 3rd dimensional as a sort of volume.
As the electron or proton curl up then they still have perpetual motion of going around and around and around in perpetual state of motion. The kinetic energy of the entire closed loop moving forward may have ended or stopped but the wave itself inside the closed loop endlessly goes around. So that a proton or electron inside a atom has both perpetual motion and has rest-mass. But the photon has 0 rest- mass and perpetual motion moving forward in its direction of motion. Another reason the photon needs to be a double transverse wave so that it is stable in its forward direction motion and not prone to curling up.
Google's archives are top-heavy in hate-spew from search-engine- bombing. Only Drexel's Math Forum has done a excellent, simple and fair archiving of AP posts for the past 15 years as seen here: