Sentence Examples


  • Formerly the sparkand absorption-spectra were the sole methods available; a third method was introduced by Crookes, who submitted the oxides, or preferably the basic sulphates, to the action of a negative electric discharge in vacuo, and investigated the phosphorescence induced spectroscopically.
  • While this pallidness was burning aloft, few words were heard from the enchanted crew; who in one thick cluster stood on the forecastle, all their eyes gleaming in that pale phosphorescence, like a far away constellation of stars.
  • It is not merely on land that this phenomenon of phosphorescence is to
  • The phosphorescence of the sea is due, it will be as well to mention
  • That the kind of phosphorescence just spoken of is only one mode in

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