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Christian Huygens.

Christian Huygens(April 1629-July 1695)

Mathematician, physicist, astronomer in the Netherlands. He actually made the pendulum clock for the first time. He also devised a balance spring, a temp. This contributed greatly to miniaturization and high accuracy of the portable clock.


16th June, 1657 is the era of precision clocks. Christian Huygens attached the pendulum clock to the Netherlands parliament. In this way, the pendulum became used as a governor instead of the foliot, the accuracy was improved, and furthermore, the minute hand was assembled to the clock. Then he devised a balance spring and temp in 1675. This clock is said to be "the first practical mechanical clock in the world."
Besides that, he is also famous for elucidating as being circular the "Saturn's Arm" and "Saturn's Ear" discovered by Galileo Galilei and advocating Huygens' principle.


クリスチャン・ホイヘンス(1629年4月~1695年7月)

オランダの数学者、物理学者、天文学者。振子時計を初めて実際に製作した。また、ヒゲゼンマイ・テンプを考案した。これが、携帯時計の小型化と高精度化に大きく貢献した。


1657年6月16日は精密時計の紀元の日である。クリスチャン・ホイヘンスがオランダ議会に振子時計を取り付けたのである。こうして棒テンプに代わり、振子が調速機として用いられるようになり、精度が向上し、さらには時計に分針が付けられるようになった。その後も、1675年にヒゲゼンマイ・テンプを考案した。この時計が「世界初の実用的な機械時計」と言われている。
またそのほかに、彼はガリレオ・ガリレイの発見した「土星の腕」・「土星の耳」を環状であることを解明し、「ホイヘンスの原理」を提唱したことでも有名である。

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