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Becquerel rays

American  

plural noun

  1. (formerly) rays emitted by radioactive substances.


Etymology

Origin of Becquerel rays

Named after A. H. Becquerel

Example Sentences

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And what seemed the more wonderful was the fact that these "Becquerel rays," as they were now called, emanated spontaneously from the pitch-blende.

From A History of Science, Volume 5(of 5) Aspects Of Recent Science by Williams, Henry Smith

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