betatron

noun
be·ta·tron | \ˈbā-tə-ˌträn \

Definition of betatron 

: an accelerator in which electrons are propelled by the inductive action of a rapidly varying magnetic field

First Known Use of betatron

1941, in the meaning defined above

History and Etymology for betatron

International Scientific Vocabulary

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The first known use of betatron was in 1941

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