Reactors - fission
Sun - fusion
The energy released from fission and fusion is excess nuclear force, also known as residual binding energy.
Binding energy, also known as the strong atomic force, holds quarks together to form protons and neutrons. It is stronger than the electromagnetic force by about a factor of 100, hence it overcomes, in the near scale of the protons and neutrons, the repulsive force between protons and like charged quarks due to the electromagnetic force.
The residual binding energy, then, is what holds protons and neutrons together in the nuclei of atoms. It is somewhat less than binding energy, but it is still more than the electromagnetic force, at least up to a certain distance, so atoms up to lead (AN=82) tend to be stable, and atoms from bismuth (AN=83) and up tend to be unstable.
When we split (fission) heavy atoms, such as uranium, the sum of the nuclear force of the pieces remaining is less than the original nuclear force. Similarly, when we combine (fusion) light atoms, such as hydrogen, the nuclear force of the product is less than the sum of the nuclear force of the component pieces.
The difference in nuclear force is released as energy, in the form of gamma rays and other particles, effectively heat. Its not a large amount of excess energy on the atomic scale, but when you add up the massive number of fission or fusion events that occur, you get a substantial amount of excess energy.
Another way of looking at this is that the end result loses mass. That loss of mass can be compared to the excess energy with Einstein's famous mass-energy equivalence formula e = mc2.
Just to put that into perspective, one kilogram of anything, if completely converted to energy, would be 9 x 1016 joules, or about 21.5 megatons of TNT. The energy released by the bomb at Hiroshima was estimated to be about 13 to 18 kilotons of TNT, from the conversion of only 600 to 860 milligrams of uranium. On the other extreme, the fusion process in the Sun is estimated to convert about 4.26 million metric tons of hydrogen per second into energy, creating 3.846 x 1026 joules per second, or about 9.192 x 1010 megatons of TNT per second.
Nuclear fusion. Atoms are smashed together in the star's core, releasing massive amounts of energy.
Nuclear fission is the source of the sun's energy. It is a process in which an atom of hydrogen fuses with another atom of hydrogen, releasing large amounts of energy in the process. It is quite the opposite of nuclear fission, which is the source of atomic energy.
It produces so much energy because of the nuclear fusion reaction that happens in the Sun's core every second. Nuclear fusion releases tremendous amounts of energy.
Within the Sun, nuclear fusion between hydrogen and helium takes place, giving off enormous amounts of energy. This energy is released in the form of radiation, which travels through the vacuum of space and reaches planets.
1 million exploding nuclear bombs
Nuclear energy is released when U-235 undergoes fission, and that takes place in nuclear reactors (or nuclear weapons). So a reactor is a thing constructed to produce nuclear energy.
We use nuclear fission in nuclear reactors to tap nuclear energy.
1. releases large amounts of energy from small amounts of mass 2. very efficient 3. convert nuclear energy into thermal energy 4. the fuel lasts a long time
In nuclear fission reactors
yes
The expectation is that fusion reactors will provide large amounts of energy, and that they will be relatively environmentally-friendly.
The use of nuclear energy
Uranium-235 react with thermal neutrons in a nuclear reaction called fission. The enormous energy released by the nuclear fission can be transformed in electricity and heat in nuclear reactors.
Uranium is used as nuclear fuel in nuclear reactors.
Yes, nuclear fission reactors are very effective and can generate a lot of power. That is why nuclear fission reactors are very effecive
The binding energy is used in nuclear reactors.
Uranium.