1955 年 24 巻 4 号 p. 144-147
C. P. D. between Pt and Ag in various dielectric liquids is measured by the Zisman method. The change of the true C. P. D. produced by the immersion of the electrodes in the liquid is found by the method reported before and shows a close connection with the dipole moment of the liquid molecule. It is further found that the apparent C. P. D. consists not only of the true C. P. D. and the potential drop through the Ohmic leakage resistance of the liquid, but also of an unknown potential which is not included in the previously reported formula giving the true C. P. D.