PHYSICS TERMS

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

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Work

Work, in physics, the movement of a body by a force acting against a resistance. Work is performed when a person lifts a weight, since the person applies a force to move the weight upward.

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  • Expansion
    Expansion

    Expansion, an increase in the volume of a substance, usually due to the addition of heat to the substance. See more »

  • Heat
    Heat

    Heat, the energy possessed by molecules because of their motion. Since all solids, liquids, and gases are made of molecules that move about, all such substances contain heat. See more »

  • How are frequency and wavelength of light related?
    How are frequency and wavelength of light related?

    Frequency has to do with wave speed and wavelength is a measurement of a wave's span. Learn how frequency and wavelength of light are related in this article. See more »

  • Physics
    Physics

    Physics, the science that deals with matter and energy and the relationships that exist between them. See more »

  • Pyrometer
    Pyrometer

    Pyrometer, an instrument for measuring temperature. Although the term pyrometer is generally considered to apply to instruments that measure high temperatures only, some pyrometers are designed to measure low temperatures. See more »

  • Solid-State Physics
    Solid-State Physics

    Solid-state Physics, the branch of physics that deals with the structure and properties of solids. See more »

  • Calorie
    Calorie

    Calorie, a unit for measuring the amount of heat released or absorbed by a substance. See more »

  • Calorimeter
    Calorimeter

    Calorimeter, an instrument for measuring the amount of heat released or absorbed in physical and chemical processes. See more »

  • Capillary Action
    Capillary Action

    Capillary Action, or Capillarity, the tendency of liquids to rise or to be depressed in tubes of small diameter. See more »

  • Carat
    Carat

    Carat, a unit of weight for precious stones. The international, or metric, carat was standardized in 1913 and accepted by the United States and many other countries. See more »

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