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In chemistry, molecular orbital theory (MO theory or MOT) is a method for describing the electronic structure of molecules using quantum mechanics. It was proposed early in the 20th century. The MOT explains the paramagnetic nature of O 2, which VSEPR theory cannot explain.
Bohr model in 1921 [4] after Sommerfeld expansion of 1913 model showing maximum electrons per shell with shells labeled in X-ray notation. Until the second decade of the 20th century, atomic models were generally speculative and even the concept of atoms let alone atoms with internal structure faced opposition from some scientists.
In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time. In Albert Einstein 's 1905 paper, On the Electrodynamics of Moving Bodies , the theory is presented as being based on just two postulates : [ p 1 ] [ 1 ] [ 2 ]
A laptop that is designed to be modular. Modular design, or modularity in design, is a design principle that subdivides a system into smaller parts called modules (such as modular process skids), which can be independently created, modified, replaced, or exchanged with other modules or between different systems.
In Gestalt theory, information is perceived as wholes rather than disparate parts which are then processed summatively. As used in Gestalt psychology, the German word Gestalt (/ ɡ ə ˈ ʃ t æ l t,-ˈ ʃ t ɑː l t / gə-SHTA(H)LT, [4] [5] German: [ɡəˈʃtalt] ⓘ; meaning "form" [6]) is interpreted as "pattern" or "configuration". [7]
The rule then predicts the electron configuration 1s 2 2s 2 2p 6 3s 2 3p 6 3d 9 4s 2, abbreviated [Ar] 3d 9 4s 2 where [Ar] denotes the configuration of argon, the preceding noble gas. However, the measured electron configuration of the copper atom is [Ar] 3d 10 4s 1. By filling the 3d subshell, copper can be in a lower energy state.
Automata theory is the study of abstract machines and automata, as well as the computational problems that can be solved using them. It is a theory in theoretical computer science with close connections to mathematical logic. The word automata comes from the Greek word αὐτόματος, which means "self-acting, self-willed, self-moving". An ...
In quantum field theory, the quantum configuration space, the domain of the wave functions , is larger than the classical configuration space. While in the classical theory we can restrict ourselves to suitably smooth fields, in quantum field theory we are forced to allow distributional field configurations.