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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. Nuclear fission | Examples & Process | Britannica

    Dec 4, 2025 · 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 …

  3. DOE Explains...Nuclear Fission - Department of Energy

    Nuclear fission is the process where the nucleus of an atom splits into two or more smaller nuclei and other particles. These particles can include neutrons, alpha particles (helium nuclei), beta …

  4. Nuclear Fission Definition and Examples

    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. What is Nuclear Energy? The Science of Nuclear Power

    Nov 11, 2025 · Nuclear energy is a form of energy released from the nucleus, the core of atoms, made up of protons and neutrons. This source of energy can be produced in two ways: fission …

  7. What Is Nuclear Fission? The Physics Behind Atomic Power

    May 25, 2025 · Nuclear fission is the process by which the nucleus of an atom splits into two or more smaller nuclei, accompanied by the release of a large amount of energy. This seemingly …

  8. 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 …

  9. Science Made Simple: What Is Nuclear Fission? - SciTechDaily

    Oct 13, 2024 · Nuclear fission, discovered in 1938, involves splitting an atom's nucleus, releasing energy. It's essential for electricity generation in nuclear power plants and occurs naturally …

  10. Nuclear Fission | Definition, Reaction & Examples | nuclear

    Nuclear fission is a nuclear reaction or a decay process, in which the heavy nucleus splits into smaller parts (lighter nuclei). The fission process often produces free neutrons and photons (in …