Sentence Examples


  • In 1894 he was associated with Lord Rayleigh in the discovery of argon, announced at that year's meeting of the British Association in Oxford, and in the following year he found in certain rare minerals such as cleveite the gas helium which till that time had only been known on spectroscopic evidence as existing in the sun.
  • Cleveite, samarskite and fergusonite contain a little more than monazite.
 
 

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