bark-hausen effect

Barkhausen effect

[bahrk-hou-zuhn, bahr-kou-]
noun Physics.
the phenomenon of short, sudden changes in the magnetism of a ferromagnetic substance occurring when the intensity of the magnetizing field is continuously altered.

Origin:
1955–60; named after H. Barkhausen (1881–1956), German physicist

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World English Dictionary
Barkhausen effect (German ˈbarkhaʊzən)
 
n
the phenomenon that ferromagnetic material in an increasing magnetic field becomes magnetized in discrete jumps, discovered by Heinrich Georg Barkhausen (1881--1956)

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