eng Science and Education Publishing International Journal of Physics 2333-4576 2024-06-20 12 4 126 146 10.12691/ijp-12-4-2 IJP20241242 article Self-Variation Theory-Part II Emmanuil Manousos emanoussos@phys.uoa.gr 1 APM Institute for the Advancement of Physics and Mathematics, Athens, Greece In this article we present the second part of the Self-Variation Theory. The article includes three sections; the gravitational interaction, the justification of the cosmological data, and the system of equations for the structure of matter and quantum phenomena. https://pubs.sciepub.com/ijp/12/4/2/ijp-12-4-2.pdf electromagnetism gravity particle interactions origin of universe evolution of universe structure of matter quantum phenomena