...Then, when the current is turned off, the electric double layer disappears. This process can be detected as a change in the potential difference on the earth's surface, and can be used to explore metal deposits (induced polarization method, IP method). The electric double layer is formed when ions accumulate at the boundary surface due to the passage of electricity, because the electrical conduction of the earth is ionic conduction in the formation water, whereas that of metallic minerals is electronic conduction. *Some of the terminology used in reference to the "IP Act" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…その後に電流を切ると電気二重層が解消される。この過程を地表の電位差の変化として検出し,金属鉱床の探査に役立てることができる(誘導分極法,IP法)。電気二重層は,大地の電気伝導が地層水中のイオン伝導であるのに対し,金属鉱物内は電子伝導であるため,通電により境界面にイオンがたまって形成される。… ※「IP 法」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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