magnetic bearing

A magnetic bearing is a bearing which supports a load using magnetic levitation. Magnetic bearings support moving machinery without physical contact, for example, they can levitate a rotating shaft and permit relative motion without friction or wear. They are in service in such industrial applications as electric power generation, petroleum refining, machine tool operation and natural gas pipelines. They are also used in the Zippe-type centrifuge  used for uranium enrichment.
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Bearing measured with reference to magnetic north. See also bearing; grid bearing; relative bearing; true bearing. 9/1/96

Azimut mesuré par rapport au nord magnétique. Aussi appelé "relèvement magnétique". Voir aussi azimut; azimut géographique; gisement; relèvement "grille". 9/1/96