…When the metric system was first established in France in 1795, the base unit of mass was the gram, and the kilogram was calculated based on the definition of the gram, which was the mass of one cubic decimeter of distilled water at its maximum density. Based on this definition, a platinum cylindrical weight was made in 1799, which most accurately represents the size of the kilogram as defined above, and was named the Kilogramme des Arcives after the Archives nationales, where it was kept. In order to internationalize the metric system, the International Meter Committee met in 1870 and 1872, and resolved to derive a new international prototype from the actual mass in a vacuum that the Kilogramme des Arcives represents. … *Some of the terminology explanations that mention "Kilogram des Arsèves" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…1795年にフランスでメートル法が初めて制定された際,質量の基本単位はグラムであり,そのグラムの定義から換算して,キログラムは〈最大密度にある蒸留水1立方デシメートルの質量〉であった。この定義に基づいて白金製の円柱型分銅が99年に作られたが,これは上記定義のキログラムの大きさを最も精密に表す分銅であり,その保管場所の国立史料館Archives nationalesの名を付けてキログラム・デ・ザルシーブという。 メートル法の国際化のため,国際メートル委員会が1870年と72年に開かれたが,そこで新しい国際原器をキログラム・デ・ザルシーブが実際に示す真空中の質量から導くことが決議された。… ※「キログラム・デ・ザルシーブ」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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