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Fission is a nuclear reaction where a heavy atom is split up into lighter elements, thereby producing energy. Fission is commonly used in nuclear power plants, but someday they will use fusion. Fusion is a nuclear reaction where very light elements are fused together under enormous heat and pressure into heavier elements, thereby producing energy. The Sun and all the stars are fusion reactors. Thermonuclear bombs (H-bombs) use fission (an A-bomb) to produce the heat needed for fusion.

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16y ago
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6mo ago

Fusion is the process where two light atomic nuclei combine to form a heavier nucleus, releasing a large amount of energy, as seen in the sun. Fission is the process where a heavy atomic nucleus splits into two or more lighter nuclei, releasing energy and neutrons, as seen in nuclear power plants and atomic bombs.

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11y ago

Nuclear fission is the splitting of heavy nuclei (as U-235) when bombarded by neutrons. The nuclear fusion is the combination of light nuclei into heavier nuclei. Both the nuclear fission and nuclear fusion result in loss of mass (or mass defect) that transforms into energy according to formula E = mc2 (c is light velocity).

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Q: What are fusion and fission with respect to nuclear physics?
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What is the study of fission and fusion?

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I currently use nuclear fusion.


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