Amagat, EH (English spelling) AmagatEH

Japanese: Amagat,E.H.(英語表記)AmagatEH
Amagat, EH (English spelling) AmagatEH

…In 1860, R. Boyle discovered Boyle's law by compressing air using a mercury column in a U-shaped glass tube with one end closed, and measuring the pressure from the difference in the height of the mercury column in the U-tube. Experiments to measure the compressibility of gases and liquids by generating pressure using a mercury column and simultaneously measuring the pressure were attempted until the end of the 19th century, and in 1877-79, Louis Paul Cailletet (1832-1913) and Emile Hilarie Amagat (1841-1915) performed experiments using the Eiffel Tower and a coal mine shaft in Paris to erect a mercury column and reach a pressure of 43 MPa. However, pressure measurement using a liquid column becomes impractical when it exceeds 0.4 MPa (about 4 m of mercury column). …

*Some of the terminology explanations that mention "Amagat, EH" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…60年にはR.ボイルが一端を閉じたU字管形のガラス管内の水銀柱を使って空気を圧縮し,U字管内の水銀柱の高さの差から圧力を測る実験によりボイルの法則を発見した。このように,水銀柱を使って圧力を発生し,同時に圧力を測定して気体や液体の圧縮率を測定する実験は19世紀末まで試みられ,1877‐79年にはカイユテLouis Paul Cailletet(1832‐1913)やアマガEmile Hilarie Amagat(1841‐1915)によってパリのエッフェル塔や炭鉱の縦坑を利用して水銀柱を立て,43MPaに達する実験がなされている。しかし液柱による圧力測定は0.4MPa(水銀柱で約4m)を超えると実用的でなくなる。…

※「Amagat,E.H.」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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