Silver electricity meter

Japanese: 銀電量計 - ぎんでんりょうけい
Silver electricity meter

…It is also called a voltameter or a coulometer. In 1908, the silver coulometer, which uses a silver nitrate solution, was used to define the international ampere. Now that the International System of Units has been adopted, it is used instead to precisely measure the Faraday constant F.

*Some of the terminology explanations that mention "silver current meter" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ボルタメーターvoltameter,クーロメーターとも呼ばれる。1908年国際アンペアの定義に使用されたものが硝酸銀溶液を用いる銀電量計である。 国際単位系を採用した現在では,逆にファラデー定数Fの精密測定に用いられる。…

※「銀電量計」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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