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.

How Nuclear Power Works

On one hand, nuclear power offers a clean energy alternative that decreases fossil fuel dependence. On the other, it summons images of quake-ruptured Japanese power plants belching radioactive steam. What happens in reactors in good times and bad?

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  • 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 »

  • 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 »

  • Atom


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

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