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- DictionaryPhys·ics/ˈfiziks/
plural
- 1. the branch of science concerned with the nature and properties of matter and energy. The subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.
May 23, 2024 · Physics is the natural science of matter, involving the study of matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, with its main goal being to understand how the universe behaves.
May 6, 2024 · Physics is the science of matter, motion, and energy that deals with the structure and interactions of the observable universe. Learn about the branches, laws, and history of physics from Britannica's experts.
May 3, 2024 · 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 application of a force.
- The Editors of Encyclopaedia Britannica
May 3, 2024 · 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. The units in which work is expressed are the same as those for energy.
- The Editors of Encyclopaedia Britannica
May 6, 2024 · An animation of gravity at work. Albert Einstein described gravity as a curve in space that wraps around an object—such as a star or a planet. If another object is nearby, it is pulled into the curve. Image credit: NASA. Anything that has mass also has gravity. Objects with more mass have more gravity. Gravity also gets weaker with distance.
May 21, 2024 · Physics is the scientific study of matter and energy. Some specialties, like quantum physics, have led to a new understanding...
May 23, 2024 · In physics, work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, for a constant force aligned with the direction of motion, the work equals the product of the force strength and the distance traveled.
