Tourmaline group crystals reaction with water

Abstract The pyroelectricity in tourmaline crystals has proved to be the secondary pyroelectric effect due to the thermal expansion and the piezoelectricity. On the c-face of a tourmaline powder of radius a [μm], there exists the electric field of 107 [V/m] which decreases following (a/r)3 at distance r and is faint at teen [μm] value of r. Several attributes of water that has contacted tourmalines undergo definite changes. Quite a few novel applications of tourmalines are possible.