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Coupling print that page


A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. Couplings do not normally allow disconnection of shafts during operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded

J-coupling print that page

interaction between each nucleus and the electron spin of its own atom together with the exchange coupling of the electron spins with each other. In the 1990s, direct evidence was found for the presence of J-couplings between magnetically active nuclei on both sides of the hydrogen bond

wikipedia.org | 2011/5/20 11:25:33

Coupling (railway) print that page


A coupling (or a coupler ) is a mechanism for connecting rolling stock in a train. The design of the coupler is standard, and is almost as important as the railway gauge , since flexibility and convenience are maximised if all rolling stock can be coupled together. The equipment that connects

Coupling constant print that page

In physics , a coupling constant , usually denoted J , is a number that determines the strength of an interaction . Usually the Lagrangian or the Hamiltonian of a system can be separated into a kinetic part and an interaction part . The coupling constant determines the strength of the

wikipedia.org | 2011/7/24 22:36:39

Foerster coupling print that page

Förster coupling is the resonant energy transfer between excitons within adjacent QD's ( Quantum Dots ). The first studies of Foerster were performed in the context of the sensitized luminescence of solids. Here, an excited sensitizer atom can transfer its excitation to a neighbouring acceptor

wikipedia.org | 2010/10/2 6:18:39

Rovibrational coupling print that page

Generally vibrational transitions occur in conjunction with rotational transitions . Consequently, it is possible to observe both rotational and vibrational transitions in the vibrational spectrum. Although many methods are available for observing vibrational spectra, the two most common

wikipedia.org | 2010/9/27 0:51:31

Angular momentum coupling print that page

In astronomy , spin-orbit coupling reflects the general law of conservation of angular momentum , which holds for celestial systems as well. In simple cases, the direction of the angular momentum vector is neglected, and the spin-orbit coupling is the ratio between the frequency with which

wikipedia.org | 2011/5/10 20:48:17

Vibronic coupling print that page

In theoretical chemistry , the vibronic coupling terms, (which are neglected within the Born–Oppenheimer approximation ), are proportional to the interaction between electronic and nuclear motions of molecules. The term "vibronic" originates from the concatenation of the terms "vibrational

wikipedia.org | 2010/9/26 1:24:09

Coupling (physics) print that page

The concept of coupling is particularly important in physical cosmology , in which various forms of matter gradually decouple and recouple between each other. Coupling is also important in physics for the generation of plasmas . In electrical discharges, the coupling of an exciting field

wikipedia.org | 2010/9/25 7:30:07

Coupling (disambiguation) print that page

Pyrenees (disambiguation) From Wikipedia, the free encyclopedia Jump to: navigation , search Pyrenees may refer to any of three mountain ranges: Pyrenees , on the Franco-Spanish border Pyrenees (Victoria) , in south-eastern Australia Montes Pyrenaeus , on the moon Pyrenees

wikipedia.org | 2011/9/2 2:47:01