When unifying the Special Relativity with the Gravity and Electromagnetism, was obtained new equations that explain every operation of those two laws and they detail the conditions that turn them in a single force (\(F_e =F_g = {c^4\over4G} \)) in the mass center, in the Primordial Atom, in the expansion of the mass of the Universe and in the Black Holes. The equations show that the origin of the bing-beng happened through the energy (\(E =mc^2 \)) without influence of the force (\(F_e =F_g

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... ) through the primordial particle that it only interacted with the light where the mass and load tend for infinite with . The equation shows that the light is a simultaneous action caused by the gravity and electromagnetism serving as middle of connection in only one entity in their possibilities of the duality wave-particle.