NUCLEAR SCIENCE

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.
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How Radiation Sickness Works

We're all exposed to tiny levels of radiation, but a blast of it can leave you in agony -- that is, if it doesn't kill you outright. What is it, what causes it and how can we treat it?

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  • Antimatter
    Antimatter

    Antimatter, matter composed of antiparticles (subatomic particles with certain properties, such as electrical and magnetic properties, opposite those of ordinary subatomic particles with the same mass). See more »

  • Atom
    Atom

    Atom, the smallest part of a chemical element that retains the identity of the element. See more »

  • Elementary Particles
    Elementary Particles

    Elementary Particles, in physics, the basic components of matter and energy. The study of elementary particles is known as elementary particle physics, or particle physics. See more »

  • How a Nuclear Meltdown Works
    How a Nuclear Meltdown Works

    It's hard to get beyond Fukushima Daiichi when you think about nuclear meltdowns, but in fact the first one occurred decades ago, in 1969, in Switzerland's Lake Geneva region. How does such a cataclysmic incident occur? See more »

  • How does a Crookes' radiometer work?
    How does a Crookes' radiometer work?

    I once saw this device shaped like a light bulb. It had a vertical support inside it, and on that support there were four vanes with four diamonds on the end. One side of the diamond was black and the other was white. I did a little research and found out that it was called a Crookes' radiometer -- how does it work? See more »

  • Particle Accelerator
    Particle Accelerator

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

  • Radioactivity
    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

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

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