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Pure physics is a branch of fundamental science (also called basic science). Physics is also called " the fundamental science" because all branches of natural science like chemistry, astronomy, geology, and biology are constrained by laws of physics. [ 60] Similarly, chemistry is often called the central science because of its role in linking ...
This glossary of physics is a list of definitions of terms and concepts relevant to physics, its sub-disciplines, and related fields, including mechanics, materials science, nuclear physics, particle physics, and thermodynamics. For more inclusive glossaries concerning related fields of science and technology, see Glossary of chemistry terms ...
chemical physics, the science of physical relations in chemistry. computational physics, the application of computers and numerical methods to physical systems. econophysics, dealing with physical processes and their relations in the science of economy. environmental physics, the branch of physics concerned with the measurement and analysis of ...
Physics – natural science that involves the study of matter [ 1] and its motion through spacetime, along with related concepts such as energy and force. [ 2] More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves. [ 3][ 4][ 5]
This definition is basic to all classical physics. Einstein had the genius to question it, and found that it was incomplete. Instead, each "observer" necessarily makes use of his or her own scale of time, and for two observers in relative motion, their time-scales will differ. This induces a related effect on position measurements.
Classical physics. Classical physics is a group of physics theories that predate modern, more complete, or more widely applicable theories. If a currently accepted theory is considered to be modern, and its introduction represented a major paradigm shift, then the previous theories, or new theories based on the older paradigm, will often be ...
The concept of force makes the everyday notion of pushing or pulling mathematically precise. Because the magnitude and direction of a force are both important, force is a vector quantity. The SI unit of force is the newton (N), and force is often represented by the symbol F . Force plays an important role in classical mechanics.
Power in mechanical systems is the combination of forces and movement. In particular, power is the product of a force on an object and the object's velocity, or the product of a torque on a shaft and the shaft's angular velocity. Mechanical power is also described as the time derivative of work.