Because all electrons, nucleons, and other particles undergo a persistent spin motion without having any source of infinite energy, they should have a unique structure that keeps them persistently spinning and provides all the properties that they display. In addition, there should be some reason or purpose why they show a persistent spin motion, because, in nature, nothing occurs without a reason or purpose. Therefore, the unique structures of electrons, and nucleons, and purpose why they possess persistent spin motion have been determined. The results of these determinations provide the knowledge of a new force possessing characteristics of nuclear force and both attractive and repulsive components, and very clear and complete explanation of: 1) all the phenomena; 2) all the properties and effects of their systems; and 3) structures of their systems, e.g., deuterons, alpha particles, and nuclei; those are generated due to these particles. In the present study, the mentioned above new force has been determined. The attractive component of this force provides very clear and complete explanations of how: 1) electrons, protons, and so forth are bound together in their respective beams despite similar charges on them; 2) the energy of free electrons of the substances is reduced when the substances acquire superconducting state; 3) neutrons become stable and nucleons are bound together in deuterons, alpha particles, and nuclei. The repulsive component provides explanation of how alpha and beta particles are emitted from nuclei when the nuclei become radioactive. Further, the above force gives rise to a potential of unique, super soft core nature.