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  1. Nuclear fission - Wikipedia

    Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. The fission process often produces gamma photons, and releases a very large amount of …

  2. Fission and Fusion: What is the Difference? | Department of ...

    Apr 1, 2021 · Fission occurs when a neutron slams into a larger atom, forcing it to excite and split into two smaller atoms—also known as fission products. Additional neutrons are also released …

  3. Nuclear fission | Examples & Process | Britannica

    4 days ago · Nuclear fission, subdivision of a heavy atomic nucleus, such as that of uranium or plutonium, into two fragments of roughly equal mass. The process is accompanied by the …

  4. Nuclear Fission Definition and Examples - Science Notes and ...

    May 13, 2023 · Nuclear fission is a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei. This process often produces …

  5. Fission - Understand Energy Learning Hub

    Nuclear fission is the process of splitting a large atom into two smaller atoms and releasing a LOT of heat, making it an extremely energy dense resource. That heat is used to boil water, make …

  6. The Fission Process – MIT Nuclear Reactor Laboratory

    When a U-235 nucleus absorbs an extra neutron, it quickly breaks into two parts. This process is known as fission (see diagram below). Each time a U-235 nucleus splits, it releases two or …

  7. Nuclear Fission Definition and Examples - ThoughtCo

    Jun 9, 2025 · Fission is the splitting of an atomic nucleus into two or more lighter nuclei accompanied by energy release. The original heavy atom is termed the parent nucleus, and …