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  1. Nuclear fusion | Development, Processes, Equations, & Facts

    Nov 9, 2025 · Nuclear fusion, process by which nuclear reactions between light elements form heavier elements. In cases where interacting nuclei belong to elements with low atomic …

  2. Nuclear engineering - Reactor Design, Radiation Protection, Fusion ...

    Nuclear engineers work with mechanical engineers to determine the heat transfer and coolant flow within the reactor, typically using complex simulation codes to model the combined …

  3. Nuclear War & Arms Control - Student Center | Britannica.com

    In the 1950s the U.S. began producing thermonuclear (or hydrogen) bombs, the enormous explosive power of which results from an uncontrolled self-sustaining chain reaction in which …

  4. radiation - Students | Britannica Kids | Homework Help

    Such particles are often associated with high-energy EM radiation; both kinds of radiation may be produced by an event such as the fusion or fission of nuclear materials. Unlike photons, …

  5. Nuclear reaction | Definition, History, Types, & Facts | Britannica

    Nuclear reaction, change in the identity or characteristics of an atomic nucleus, induced by bombarding it with an energetic particle. The bombarding particle may be an alpha particle, a …

  6. nuclear weapons - Students | Britannica Kids | Homework Help

    In a fusion nuclear device such as a hydrogen bomb, or H-bomb, lightweight nuclei are forced to fuse at very high temperatures into heavier nuclei, releasing energy along with a neutron.

  7. Thermonuclear reaction | Fusion, Hydrogen & Helium | Britannica

    Thermonuclear reaction, fusion of two light atomic nuclei into a single heavier nucleus by a collision of the two interacting particles at extremely high temperatures, with the consequent …

  8. space exploration - Students | Britannica Kids | Homework Help

    Their experiments included studies of the Sun, Earth resources, and the human body’s reaction to an extended stay in space. Their space endurance record of 28 days was topped by the …

  9. star - Students | Britannica Kids | Homework Help

    The vast majority of the energy produced by stars (at least main-sequence ones) comes from nuclear fusion. Through a series of steps that can vary with the mass of the star, low-mass …

  10. CNO cycle | CNO cycle | Stellar, Hydrogen, Helium | Britannica

    Fusion reactions between light elements, like fission reactions that split heavy elements, release energy because of a key feature of nuclear matter called the binding energy, which can be …