Sentence Examples

  • In this case too it is associated with radioactive matter, which is almost ubiquitous.
  • Another radioactive substance - ionium - was isolated from carnotite, a uranium mineral, by B.
  • Strutt has found that phosphatized nodules and bones are rich in radioactive constituents, and has brought this into relation with their geological age.
  • And Mme Curie subjected a large amount of pitchblende to a laborious process of fractionation, with the result that in 1898 they announced the existence in it of two highly radioactive substances, polonium and radium.
  • In 1901 Elster and Geitel found that a radioactive emanation is present in the atmosphere.
 
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