The effect of tourmaline on pH controlling is investigated. The hydrogen ion concentration tremendously decreases for 1 h. The concentration approaches 10-7 mol/l at infinite time. On the other hand, the materials intelligence (Ih) has been suggested. If the fh value is 50, we can determine the Ih value [Ih(50)] for tourmaline. The Ih (50) and Pr values are 0.38 and 0.70 for tourmaline.
Kubo, T.1989. "Engineering Application of Solid State Physics. Interface Activity of Water Given Rise to by Tourmaline", Solid State Physics (Kotaibutsuri), 24(12):1055-1060.
4.
Nakamura, T. et al. 1992. "Tourmaline Group Crystals Act on Water", Solid State Physics (Kotaibutsuri), Z7(4):303-313.
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Nakamura, T. and T. Kubo. 1992. "Tourmaline Group Crystals Reaction with Water", Ferroelectrics, 137(1/4):13-31.
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Nishi, Y. and A. Yazawa. 1995. "Materials Intelligency (I,) Based on Human Beings", Proc. 3rd Asia-Pacific Workshop on Intelligent Materials, Tokyo, Japan, pp. 49-51.
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