Abstract: A photon is an absolute particle of energy, and the energy of a photon is mc2. The energy of the photon is the sum of kinetic energy and potential energy, and at the edge of the universe is the sum of kinetic energy and gravitational potential energy, at which point the kinetic energy of the photon is equal to the gravitational potential energy. The existing theory is that the total mass of the universe is constant, and I believe that the final mass of the universe is half of the mass of the universe at its beginning. It can be proved that the gravitational constant g formed on the surface of a sphere with a mass m and radius r is equivalent to the gravitational constant formed by a mass of equal mass at the center of the sphere. This conclusion also applies to the universe, and I will calculate the radius r of the universe below.
1. The existing theory calculates that the radius of the universe is equal to 296 times 10 to the 26th power.
We know that the energy of the photon is equal to MC 2, the kinetic energy of the photon at the edge of the universe is MC 2 2, and the gravitational potential energy of the photon must be MGH, so MC 2 + MGH = MC 2, where M is the mass of the photon, C is the speed of light, h is the radius of space of the universe, then the gravitational potential energy of the photon must be MGH = MC 2 2.
Now we assume that the universe is a sphere, r is the radius of the universe, the existing theory is that the mass of the universe is about 10 53kg order of magnitude, and the mass of the universe is unchanged, let the mass of the universe m = 2 10 53kg, there is a photon at the edge of the universe, for this photon there must be gravitational potential energy mgr = mc 2 2, simplification to obtain the equation r = c 2 2g - (1), where g is the gravitational constant of the universe. According to the law of gravitation, we can calculate the gravitational constant of the universe g=mg r 2 - (2) simultaneous equation (1), (2) solution r=2mg c 2=296 10 26 meters. So the radius of the universe is: 296 10 26 meters.
Conclusion: The radius of the universe is equal to the mass of the universe multiplied by twice the gravitational constant divided by the square of the speed of light. So, the final radius of the universe is determined by the mass of the universe.
2. My theory calculates that the radius of the universe is equal to 148 times 10 to the 26th power.
My theory is that the mass of the universe is changing all the time. According to Einstein's mass-energy equation, we can know that the energy contained in the elementary particle is e=mc 2, the mass of the elementary particle is lost by half, the energy formed is mc 2, and the remaining mass of the elementary particle must be m 2=m, according to the law of conservation of energy and mass: the remaining mass energy must also be mc 2, and the expression of this energy is the expression of the particle moving at the speed of light, then the remaining mass, that is, the elementary particle after the mass loss, must also move at the speed of light, which is the formation process of photons.
For the loss of half of the mass of the universe, the remaining mass of the universe also reaches the speed of light, the universe no longer radiates and the mass is no longer less, i.e., the final mass of the universe is half of what the universe did at the beginning. If the mass of the universe at the beginning is m = 2 10 53 kg, my theory is that the final radius of the universe is half of what the existing theory calculates is equal to 148 times 10 to the 26th power.
Conclusion: The radius of the universe is equal to the mass of the universe multiplied by the gravitational constant divided by the square of the speed of light.
3. The radius of the universe is determined by the mass at the beginning of the universe.
Considering that the mass of the universe is constant, the final radius of the universe is: the radius of the universe is equal to the mass of the universe multiplied by twice the gravitational constant divided by the square of the speed of light;It is believed that the mass of the universe is changing all the time, that the change of the universe is the transformation process of mass and energy, and that the final radius of the universe is equal to the mass of the universe multiplied by the gravitation constant divided by the square of the speed of light. Regardless of whether the mass of the universe is variable or the mass of the universe is constant, the radius of the universe determined by photon energy is close to the size of the radius of the universe observed by modern science, so the method of determining the radius of the universe using photon energy is scientific.