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([2] page 364) The Sommerfeld extensions of the 1913 solar system Bohr model of the hydrogen atom showing the addition of elliptical orbits to explain spectral fine structure. The Bohr–Sommerfeld model (also known as the Sommerfeld model or Bohr–Sommerfeld theory ) was an extension of the Bohr model to allow elliptical orbits of electrons ...
The Wien effect is the experimentally-observed increase in ionic mobility or conductivity of electrolytes at very high gradient of electrical potential. [1] A theoretical explanation has been proposed by Lars Onsager .
Uses and gratifications theory was developed from a number of prior communication theories and research conducted by fellow theorists. The theory has a heuristic value because it gives communication scholars a "perspective through which a number of ideas and theories about media choice, consumption, and even impact can be viewed".
To see how this number arises, consider the real one-parameter map =.Here a is the bifurcation parameter, x is the variable. The values of a for which the period doubles (e.g. the largest value for a with no period-2 orbit, or the largest a with no period-4 orbit), are a 1, a 2 etc.
Silo effect (management) (systems theory) Simon effect (psychology) Simpson's paradox aka Yule–Simpson effect (probability) (statistics) Skin effect (electronics) Slashdot effect (denial-of-service attacks)(Internet terminology) (Slashdot) Sleeper effect (social psychology) Smith–Purcell effect (physics) (quantum optics)
No good explanation for the phenomenon existed until the introduction of quantum mechanics, which explains that the effect results from the wave-like properties of the electron. A simple model of the collision that makes use of wave theory can predict the existence of the Ramsauer–Townsend minimum.
'Effective method' is here used in the rather special sense of a method each step of which is precisely predetermined and which is certain to produce the answer in a finite number of steps". [12] Thus the adverb-adjective "effective" is used in a sense of "1a: producing a decided, decisive, or desired effect", and "capable of producing a result".
Mathematical induction can be informally illustrated by reference to the sequential effect of falling dominoes. [1] [2]Mathematical induction is a method for proving that a statement () is true for every natural number, that is, that the infinitely many cases (), (), (), (), … all hold.