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No absolutely positively safe and reliable methods of controlling it and containing it have been

perfected yet.

If you think people are afraid of some radioactive air or water leaking from a fission plant,

think how they'd feel about the possibility of a fusionreaction breaking out of the bottle,

just a couple of miles outside of town !

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14y ago
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8y ago

It takes tremendous heat and pressure to get nuclear fusion to occur. This heat and pressure is typically available in the cores of sufficiently massive stars. We have produced fusion reactions on earth by surrounding hydrogen isotopes with fission bombs. The heat and pressure cause the gas to fuse, liberating even more energy.

We are getting close to designing a workable fusion reactor. When we achieve this, there is sufficient deuterium (a heavy isotope of hydrogen) to meet the world's energy needs for thousands of years.

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12y ago

It is not yet practical to control it.

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Q: Why isnt nuclear fusion currently used as an energy source?
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