See also: Dynamo (homonymy)
Abbreviation of dynamoelectric, dynamo indicates a Machine with D.C. current functioning in electric Générateur. She was invented in Belgium in 1869 by Zénobe Gram. The dynamo rests on a physical principle: the Magnetism.
Historically, thanks to Etienne Œhmichen, the dynamo was used to produce electricity in the cars until the years 1960. The appearance of Diode S more reliable and compact made it possible to use an alternator unit + more compact Redresseur.
One often calls by error dynamo the alternator of bicycle producing of the Alternative course.
One calls terrestrial Dynamo the mechanism which transforms the energy of the turbulent currents circulating between the seed and the coat into a Magnetic field protecting the Ground from the Solar wind and, therefore necessary to the Life on ground.
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