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The fusion tag is used for questions about nuclear fusion, both the basic process at a physical level and it's use as a potential energy source.
2
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Is the energy of matter (via $E=mc^2$) actually available to do work?
Any time mass is converted to energy - be it through chemical (yes! E=mc^2 applies to chemistry) or nuclear reactions or matter-antimatter annihilation, this energy can be used to do work. Usually it' …
12
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5
answers
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Neil de Grasse Tyson on Nukes and Radiation - What the Heck Is He Talking About?
However, AFAIK most also utilize a shell of additional fissile material which undergoes fission as a result of the huge neutron flux from the fusion, rendering these much dirtier than the original bombs …