We call as by our particle formation scheme an oscillatory charge e (or -e) together with the electromagnetic waves generated by it, of angular frequency \w, as a whole a basic particle. As a direct Newtonian-Maxwellian solution, we obtain straightforwardly for the particle's component wavetrains, traveling at the velocity of light $c$, a translational kinetic energy \eng=mc^2 and alternatively an oscillatory mechanical energy \eng=\hbar^*\w. \eng amounts but to the particle's total energy and m its inertial mass; 2\pi \hbar^* is expressed by wave-medium parameters and identifiable as the Planck constant. The solutions further yield a set of semi-empirical equations for the particle's de Broglie wave parameters. As to its origin, mc^2 repre...