Sentence Examples


  • Hard on this came the recognition of the fact that freely charged positive and negative ions are always present in the atmosphere, and that a radioactive emanation can be collected.
  • In 1901 Elster and Geitel found that a radioactive emanation is present in the atmosphere.
  • For a wire exposed under the conditions observed by Elster and Geitel the emanation seems to be almost entirely derived from radium.
  • Bumstead (60) Finds That With Longer Exposure Of The Wire The Relative Importance Of The Thorium Emanation Increases.
  • With Three Hours' Exposure He Found The Thorium Emanation Only From 3 To 5% Of The Whole, But With 12 Hours' Exposure The Percentage Of Thorium Emanation Rose To About 15.

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