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  1. Physics | Definition, Types, Topics, Importance, & Facts | Britannica

    Oct 13, 2025 · Physics, science that deals with the structure of matter and the interactions between the fundamental constituents of the observable universe. Its scope of study encompasses not only the …

  2. Physics Portal | Britannica

    Physics, the basic physical science, studies objects ranging from the very small (using quantum mechanics) to the entire universe (using general relativity). It deals with the structure of matter and …

  3. Physics Definition & Meaning | Britannica Dictionary

    PHYSICS meaning: a science that deals with matter and energy and the way they act on each other in heat, light, electricity, and sound

  4. Physical science | Definition, History, & Topics | Britannica

    Physical science, the systematic study of the inorganic world, as distinct from the study of the organic world, which is the province of biological science. This article discusses the historical …

  5. physics - Kids | Britannica Kids | Homework Help

    Physics is one of the major branches of science. People who work in physics are called physicists. Physicists study matter and the forces (pushes or pulls) that act on it.…

  6. Quantum | Definition & Facts | Britannica

    Quantum, in physics, discrete natural unit, or packet, of energy, charge, angular momentum, or other physical property. Light, for example, appearing in some respects as a continuous electromagnetic …

  7. Electromagnetic induction | physics | Britannica

    Nov 6, 2025 · Electromagnetic induction, in physics, the induction of an electromotive force in a circuit by varying the magnetic flux linked with the circuit. See Faraday’s law of

  8. Quantum mechanics | Definition, Development, & Equations | Britannica

    Nov 14, 2025 · Quantum mechanics, science dealing with the behavior of matter and light on the atomic and subatomic scale. It attempts to describe and account for the properties of molecules and atoms …

  9. Work | Definition, Formula, & Units | Britannica

    4 days ago · Work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. …

  10. Mass | Definition, Units, & Facts | Britannica

    Nov 8, 2025 · Mass, in physics, quantitative measure of inertia, a fundamental property of all matter. It is, in effect, the resistance that a body of matter offers to a change in its speed or position upon the …