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  2. Nuclear shell model - Wikipedia

    en.wikipedia.org/wiki/Nuclear_shell_model

    Some semi-magic numbers have been found, notably Z = 40, which gives the nuclear shell filling for the various elements; 16 may also be a magic number. To get these numbers, the nuclear shell model starts with an average potential with a shape somewhere between the square well and the harmonic oscillator. To this potential, a spin-orbit term is ...

  3. Magic number (physics) - Wikipedia

    en.wikipedia.org/wiki/Magic_number_(physics)

    In nuclear physics, a magic number is a number of nucleons (either protons or neutrons, separately) such that they are arranged into complete shells within the atomic nucleus. As a result, atomic nuclei with a "magic" number of protons or neutrons are much more stable than other nuclei. The seven most widely recognized magic numbers as of 2019 ...

  4. List of fictional elements, materials, isotopes and subatomic ...

    en.wikipedia.org/wiki/List_of_fictional_elements...

    Septium are gemstones that align with one of seven elements: Earth, Fire, Water, Wind, Space, Mirage, and Time. Septium is central to the function of Orbal energy, which can power appliances, vehicles, or channel elemental power in the form of "Arts", magical techniques used in combat. Silver rock stone. Pokémon.

  5. Radioactive decay - Wikipedia

    en.wikipedia.org/wiki/Radioactive_decay

    Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha, beta, and gamma decay.

  6. Nuclear reaction - Wikipedia

    en.wikipedia.org/wiki/Nuclear_reaction

    Nuclear physics. In nuclear physics and nuclear chemistry, a nuclear reaction is a process in which two nuclei, or a nucleus and an external subatomic particle, collide to produce one or more new nuclides. Thus, a nuclear reaction must cause a transformation of at least one nuclide to another. If a nucleus interacts with another nucleus or ...

  7. Big Bang nucleosynthesis - Wikipedia

    en.wikipedia.org/wiki/Big_Bang_nucleosynthesis

    t. e. In physical cosmology, Big Bang nucleosynthesis (also known as primordial nucleosynthesis, and abbreviated as BBN) [1] is the production of nuclei other than those of the lightest isotope of hydrogen ( hydrogen-1, 1 H, having a single proton as a nucleus) during the early phases of the universe. This type of nucleosynthesis is thought by ...

  8. Nuclear physics - Wikipedia

    en.wikipedia.org/wiki/Nuclear_physics

    Nuclear physics. Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions, in addition to the study of other forms of nuclear matter . Nuclear physics should not be confused with atomic physics, which studies the atom as a whole, including its electrons .

  9. History of magic - Wikipedia

    en.wikipedia.org/wiki/History_of_magic

    Magic. The history of magic extends from the earliest literate cultures, who relied on charms, divination and spells to interpret and influence the forces of nature. Even societies without written language left crafted artifacts, cave art and monuments that have been interpreted as having magical purpose.