Sentence Examples


  • The horsetails are remarkable for the large quantity of silica they contain in the cuticle (hence their value in polishing), which often amounts to half the weight of the ash yielded by burning them; the roots contain a quantity of starch.
  • The effect is even perceptible at a temperature as low as 220° C. Hydrogen, and, in a much less degree, oxygen and nitrogen, will also permeate silica, but only at higher temperatures.
  • Thorianite, however, contains no silica, and until it is shown that metallic oxides behave in the same way this explanation must be accepted with reserve.
  • For. Silicon mixed with oxygen makes silica or quartz. There are few
  • An inclined channel feeds the silica abrasive to the surface of the test wheel about 2 cm in front of the test-piece.

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