If the Sun were entirely composed of coal, then the energy of burning this coal would be enough to maintain the current solar radiation for about 5,000 years.
The most energetically efficient is the synthesis of helium nuclei from the nuclei of hydrogen isotopes (synthesis of lungs). The released energy per nucleon is 3.5 MeV, i.e.
As a result of the reaction, new neutrons are emitted. These neutrons, under certain conditions, can continue the fission of uranium nuclei. A reaction in which the particles
The minimum mass of uranium at which a chain reaction is possible is called the critical mass. For uranium-235, the critical mass is about 50 kg; it consists
A nuclear reactor is a device in which thermal energy is released as a result of a controlled chain reaction of nuclear fission. It was first carried out
The quantity characterizing the multiplication of neutrons in the process of a nuclear reaction is considered to be the multiplication factor of neutrons k, determined by the ratio
In a nuclear reactor, heat is released during the decay of nuclei. This energy is converted into the energy of the steam that turns the turbine. The steam
Nuclear energy is essential. For example, for military purposes, the fission energy of uranium or plutonium is used in atomic bombs, nuclear missiles, nuclear shells and mines. Fusion
