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Nuclear energy is produced by the release of heat from unstable elements such as Uranium. The energy is harnessed by using the energy to heat water. The radioactive water is than pumped through a heat exchanger where the 'dirty water' is used to heat 'clean' water. The clean water can then be used to drive turbines and other forms of engine.

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How do nuclear fusion differ fundamentally from nuclear fission?

Nuclear fusion doesn't produce energy.


Which do you currently use nuclear fusion or fission?

I currently use nuclear fusion.


Where does nuclear fusion occur in a nuclear plant?

Nuclear fusion does not currently occur in nuclear plants. Nuclear plants use nuclear fission, where atoms are split to release energy. Fusion reactions, in which atomic nuclei combine to release energy, are not yet used commercially for electricity generation.


Is a nuclear power plant producing electricity an example of nuclear fusion?

No, a nuclear power plant producing electricity is an example of nuclear fission, not fusion. In nuclear fission, the nucleus of an atom is split, releasing energy, whereas in nuclear fusion, atomic nuclei combine to release energy.


Do fusion reactions provide nuclear power?

No, a fission reaction is not necessary to trigger a fusion reaction, but for us on earth, it is. In the field of nuclear weapons, a fission bomb is needed to create the heat necessary to set off a fusion weapon. We have to use fission, or, rather, the energy created by that, to initiate the fusion reaction. It might be possible to use a high power source, like a laser, on a small amount of material to get fusion to occur. But we are still experimenting with this in the Tokamak, and it's far from being a done deal. Stars are, in general, massive nuclear fusion reactors. Their constant consumption of fuel powering their high rate of fusion creates a massive amount of energy, and the stars' huge gravity keeps this process from blowing the whole thing apart. No fission is needed to sustain this reaction.