Major physics terms are explained in these articles. Here you can learn about some of the fundamental physics concepts.

Cloud Chamber,

Cloud Chamber, a device used by nuclear physicists to detect and study elementary particles Among the many particles that can be detected are alpha particles, protons, electrons, positrons, and various types of mesons.

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  • Flexibility


    Flexibility, the property of a substance that enables it to bend without breaking. See more »

  • Geissler Tube

    Geissler Tube

    Geissler Tube, an electron tube that is used to study the behavior of gases. It was invented in the 1860's by Heinrich Geissler, a German. See more »

  • Lenz's Law

    Lenz's Law

    Lenz's Law, a law of electromagnetic induction formulated in 1833 by the German physicist H. See more »

  • Mass Spectroscope

    Mass Spectroscope

    Mass Spectroscope, an instrument used to measure the mass of atoms and molecules. See more »

  • Perpetual Motion Machine

    Perpetual Motion Machine

    Perpetual Motion Machine, a device that will run forever without any outside source of energy. See more »

  • Radiometer


    Radiometer, an instrument designed to detect and measure radiant energy. A simple type, devised by Sir William Crookes, consists of four vanes of mica or aluminum foil that revolve on a needle point within a glass globe from which most of the air has been removed. See more »

  • Regelation


    Regelation, the melting of ice under pressure and its refreezing when the pressure is relieved. See more »

  • Relativity, Theory of

    Relativity, Theory of

    Relativity, Theory of, a description of space and time as determined by physical measurements. See more »

  • Specific Heat

    Specific Heat

    Specific Heat, a measure of the heat required to raise the temperature of a given amount of a substance by one degree. See more »

  • String Theory

    String Theory

    String Theory, in physics, a theory that describes the most elementary objects in nature as extremely small, one-dimensional structures called strings. See more »

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