The Hiroshima atomic bomb caused a nuclear fission chain reaction by colliding neutron with uranium 235 within a barrel type when the critical amount was exceeded. At the moment of the nuclear fission chain reaction of one-millionth per a second, super-nuclear explosion energy was released by about 700 g within about 50 kg of uranium 235. Ultra high temperature of several million degrees, hundreds of thousands of atmospheric pressure, gamma ray, electromagnetic wave, neutron diffused terrifically from the atomic bomb. While colliding with the surrounding atmosphere they erupted while bursting hot rays and shock waves. The energy of fission approximately composed of 5% initial radiation, 30% heat rays, 50% blast winds, and 10% violating residual radiation.
The phenomenon had been taken with ultrahigh speed camera at the first Trinity experiment in human history. 1) At 1 millionth per a second, the shock wave had bursted from the explosion point of the fireball by the atomic bomb. 2) At 2 millionth per a second, the shock waves had diffused concentrically from the earth's surface. 3) The blast had rolled up the desert.
From this process, the atomic bomb had exploded at one millionth per a second and a fireball appeared, and the surroundings emitted pale fireball from explosion, heat ray, and radiation.
