Nuclear science is the study of sub-atomic particles and their application in various disciplines. Here you can learn about nuclear power plants, atomic theory and radiation.


Why is the LHC 27 kilometers in circumference?

Twenty-seven kilometers is more than 5 5K races. Most humans aren't interested in running that much, so why do a bunch of speeding protons require that considerable distance?

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  • Particle Accelerator
    Particle Accelerator

    Particle Accelerator, a device that accelerates electrons, protons, or other charged particles to very high speeds. See more »

  • Radioactivity

    Radioactivity, the process by which the nuclei (cores) of unstable atoms of an element emit radiation (particles of matter and rays of energy), and in so doing become atoms of other elements. See more »

  • What is an atomic clock and how does it work?
    What is an atomic clock and how does it work?

    Many ads for new clocks advertise their ability to automatically synchronize themselves with the atomic clock in Boulder, Colorado. This atomic clock is more precise because it uses the frequencies of atoms as its resonator. See more »

  • Brownian Movement
    Brownian Movement

    Brownian Movement, or Brownian Motion, the rapid, erratic motion of microscopic particles dispersed in a liquid or gas. See more »

  • Cyclotron

    Cyclotron, a device for accelerating protons, alpha particles (helium nuclei), and other electrically charged particles to high speeds. See more »

  • Electron

    Electron, one of the elementary particles that make up an atom. An electron has a negative electrical charge. See more »

  • Gamma Rays
    Gamma Rays

    Gamma Rays, a form of electromagnetic radiation. Of all forms of electromagnetic radiation, gamma rays have the shortest wavelengths and greatest energy. See more »

  • Infrared Radiation
    Infrared Radiation

    Infrared Radiation, electromagnetic radiation with wavelengths between those of visible red light and radio waves. See more »

  • Irradiation

    Irradiation, exposure to radiation, such as X rays or ultraviolet rays, usually for a specific purpose. See more »

  • Isotope

    Isotope, in chemistry, one of two or more forms of an element that have the same atomic number but different atomic weights. See more »

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