Classical theory has at least two distinct meanings in Physics:
- In the context of quantum mechanics, "classical theory" refers to theories of physics that do not use the quantisation paradigm, particularly Newtonian mechanics (which is also known as classical mechanics). Physics (Greek Physis - φύσις in everyday terms is the Science of Matter and its motion. Quantum mechanics is the study of mechanical systems whose dimensions are close to the Atomic scale such as Molecules Atoms Electrons The word theory has many distinct meanings in different fields of Knowledge, depending on their methodologies and the context of discussion. In Physics, quantization is a procedure for constructing a Quantum field theory starting from a classical field theory. The word paradigm ( Greek:παράδειγμα (paradigmacomposite from para- and the verb δείχνυμι "to show" as a whole -roughly- meaning "example" Classical mechanics is used for describing the motion of Macroscopic objects from Projectiles to parts of Machinery, as well as Astronomical objects Classical mechanics is used for describing the motion of Macroscopic objects from Projectiles to parts of Machinery, as well as Astronomical objects General relativity and special relativity are also considered to be "classical" in this sense. General relativity or the general theory of relativity is the geometric theory of Gravitation published by Albert Einstein in 1916 Special relativity (SR (also known as the special theory of relativity or STR) is the Physical theory of Measurement in Inertial
- In the context of general and special relativity, "classical theory" refers to classical mechanics, and other theories which obey Galilean relativity. This page is about the scientific concept of relativity for philosophical or sociological theories about relativity see Relativism. A principle of relativity is a criterion for judging physical theories, stating that they are inadequate if they do not prescribe the exact same laws of physics in Light and other electromagnetic pheneomena cannot be correctly modeled in such a theory. Traditionally, light was reconciled with classical mechanics by assuming the existence of a "stationary" medium through which light propagated, the luminiferous aether. In the late 19th century " luminiferous aether " (or " ether " meaning light-bearing aether, was the term used to describe a medium for the propagation
The existence of these two distinct meanings of the term can lead to confusion: special relativity is a "classical theory" in the first sense, but its predictions are more accurate than "classical theory" in the second sense.
In other contexts, "classical theory" will have other meanings—if a current accepted theory is considered to be "modern", and its introduction represented a major paradigm shift, then previous theory (or new theories based on the older paradigm) will often be referred to as "classical". Paradigm shift, sometimes known as extraordinary science or revolutionary science, is the term first used by Thomas Kuhn in his influential
Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic