
Physics | Definition, Types, Topics, Importance, & Facts | Britannica
Oct 13, 2025 · Physics is the branch of science that deals with the structure of matter and how the fundamental constituents of the universe interact. It studies objects ranging from the very small …
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 …
Physical science | Definition, History, & Topics | Britannica
Physical science is the study of the inorganic world. That is, it does not study living things. (Those are studied in biological, or life, science.) The four main branches of physical science are …
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
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.…
Physics - Nuclear, Particles, Forces | Britannica
Oct 13, 2025 · One of the most significant branches of contemporary physics is the study of the fundamental subatomic constituents of matter, the elementary particles. This field, also called …
Work | Definition, Formula, & Units | Britannica
Oct 16, 2025 · 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 …
Relativity | Definition, Equations, & Facts | Britannica
Aug 30, 2025 · Along with quantum mechanics, relativity is central to modern physics. In particular, relativity provides the basis for understanding cosmic processes and the geometry …
Quantum | Definition & Facts | Britannica
Oct 8, 2025 · 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 …
Acceleration | Definition, Facts, & Units | Britannica
Sep 25, 2025 · acceleration When runners change from a jog to a sprint, they are accelerating because the magnitude of their velocity is greater than it was a second before. (more) …