The Atomistic Theory of Matter is based on four kinds of point-like stable particles: electrons (e), positrons (p), protons (P) and eltons (E). These carry two kinds of conserved elementary charges, qi = {±e} and gi = {±g∙me, ±g∙mP}. This paper discusses approaches which lead to the static and dynamic forms of interaction. The interactions are caused by elementary electric charges, qi, and by the elementary gravitational charges, gi and the interactions propagate with a constant speed, c. The propagation speed is independent of the state of the motion of the particles. The equations of motions of the fields and the particles are drived.
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