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The Big Bang Theory is an American television sitcom created by Chuck Lorre and Bill Prady, both of whom served as executive producers and head writers...

Quantum mechanics is a fundamental theory in physics that describes the behavior of nature at and below the scale of atoms.: 1.1  It is the foundation...

German as Psychologische Typen in 1921), Briggs recognized that Jung's theory resembled, but went far beyond, her own. Briggs's four types were later...

In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called...

The theory of relativity usually encompasses two interrelated physics theories by Albert Einstein: special relativity and general relativity, proposed...

schools of thought, As a result, there is no single, definitive Marxist theory. Marxism has had a profound effect in shaping the modern world, with various...

Game theory is the study of mathematical models of strategic interactions among rational agents. It has applications in many fields of social science,...

are currently working to develop a theory of gravity consistent with quantum mechanics, a quantum gravity theory, which would allow gravity to be united...

biodiversity at every level of biological organisation. The scientific theory of evolution by natural selection was conceived independently by two British...

D., is a fictional character in the CBS television series The Big Bang Theory and its spinoff series Young Sheldon, portrayed by actors Jim Parsons and...

A conspiracy theory is an explanation for an event or situation that asserts the existence of a conspiracy by powerful and sinister groups, often political...

relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein...

law, however, there are several theories of when a state should be recognised as sovereign. The constitutive theory of statehood defines a state as a...

cosmology. The model has undergone a recent resurgence as a conspiracy theory. The idea of a spherical Earth appeared in ancient Greek philosophy with...

temperature (its central singularity). It was first proposed as a physical theory in 1931 by Roman Catholic priest and physicist Georges Lemaître when he...

Greek τεκτονικός (tektonikós) 'pertaining to building') is the scientific theory that Earth's lithosphere comprises a number of large tectonic plates, which...

and normative economics, advocating "what ought to be"; between economic theory and applied economics; between rational and behavioural economics; and between...

Chaos theory is an interdisciplinary area of scientific study and branch of mathematics. It focuses on underlying patterns and deterministic laws of dynamical...

joint publication with Alfred Russel Wallace, he introduced his scientific theory that this branching pattern of evolution resulted from a process he called...

theory/method wars in which [sociologists] all agreed on at least two working hypotheses: (1) grand theory is a waste of time; [and] (2) good theory has...