Sentence Examples


  • For Sir David Brewster's work on pyro-electricity, see Trans.
  • The subject of pyro-electricity, or the power possessed by some minerals of becoming electrified when merely heated, and of exhibiting positive and negative electricity, now began to attract notice.
  • He also made many experiments with the tourmaline when cut into thin slices, and reduced to the finest powder, in which state each particle preserved its pyro-electricity; and he showed that scolezite and mesolite, even when deprived of their water of crystallization and reduced to powder, retain their property of becoming electrical by heat.
  • Of these salts several series are known, namely the ortho-arsenites, which are derivatives of the acid H3AsO3, the metaarsenites, derivatives of HAsO2, and the pyro-arsenites, derivatives of H4As2O5.
  • Copper is obtained from its ores by three principal methods, which may be denominated - (r) the pyro-metallurgical or dry method, (2) the hydro-metallurgical or wet method, and (3) the electro-metallurgical method.