permanent coupling
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Coupling (railway) by country — generally list the main national system and exclude minor narrow gauge or industrial lines of short length. Modern EMU or DMU passenger vehicles are also excluded. Current couplings are not necessarily the same as historic couplings. Contents 1… … Wikipedia
Coupling (railway) — Knuckle (AAR Type E ) couplers in use ICE coupler A c … Wikipedia
Tightlock coupling — A tightlock coupling on a British Rail Class 321. The connector below the coupling is not used in North America … Wikipedia
Gravitational coupling constant — The gravitational coupling constant, αG, is a fundamental physical constant, the coupling constant characterizing the gravitational attraction between two elementary particles with charge and nonzero mass. αG is also a dimensionless quantity, so… … Wikipedia
ferrimagnetism — permanent and large magnetizations found in some ceramic materials; it results from antiparallel spin coupling and incomplete magnetic moment cancellation … Mechanics glossary
Quattro (four wheel drive system) — quattro (meaning four in Italian), is the name used by Audi AG to indicate that four wheel drive (4WD) technologies or systems are used on specific models of the Audi automobiles.Audi.com Glossary [http://www.audi.com/audi/com/en2/tools/glossary/e… … Wikipedia
Four-wheel drive — This article is about the class of vehicle drivetrains. For other uses, see Four by four/Four wheel drive (disambiguation). All wheel drive redirects here. For the all wheel drive in motorcycles, see two wheel drive. The Jeep Wrangler is a 4WD… … Wikipedia
spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… … Universalium
Ising model — The Ising model, named after the physicist Ernst Ising, is a mathematical model in statistical mechanics. It has since been used to model diverse phenomena in which bits of information, interacting in pairs, produce collectiveeffects.Definition… … Wikipedia
Haldex Traction — AB is a division of the Swedish manufacturing company Haldex AB. It specialises in the development and manufacture of All Wheel Drive systems. Haldex is currently producing their fourth generation AWD system called, by saab, XWD (Cross Wheel… … Wikipedia
Halbach array — A Halbach array, showing the orientation of each piece s magnetic field. This array would give a strong field underneath, while the field above would cancel. The flux diagram of a Halbach array A Halbach array is a special arra … Wikipedia
