Sentence Examples

  • Some part, however, seems to be derived from Thorium, And H.
  • 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.
  • These Figures Refer To The State Of The Wire Immediately After The Exposure; The Rate Of Decay Is Much More Rapid For The Radium Than For The Thorium Emanation.
  • (For the significance of this fact see Radioactivity.) The richest known source is thorianite, which consists mainly of thorium oxide, and contains 9.5 cc. of helium per gram.

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