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Pascal's barrel is the name of a hydrostatics experiment allegedly performed by Blaise Pascal in 1646. In the experiment, Pascal inserted a 10-m long (32.8 ft) vertical tube into a barrel filled with water. When water was poured into the vertical tube, Pascal found that the increase in hydrostatic pressure caused the barrel to burst.〔 The experiment is mentioned nowhere in Pascal's preserved works and it may be apocryphal, attributed to him by 19th-century French authors, among whom the experiment is known as ''crève-tonneau'' (approx.: "barrel-buster");〔perhaps first in an educational context; the attribution is found under this name in A. Merlette, ''L'encyclopédie des écoles, journal de l'enseignement primaire et professionnel'' (1863) (p. 284 ): ''l'expérience du crève-tonneau réalisée pour la première fois par le célèbre Biaise Pascal. '' Ernest Menu de Saint-Mesmin, ''Problèmes de mathématiques et de physique: donnés dans les Facultés des science et notamment à la Sorbonne, avec les solutions raisonnées'', L. Hachette (1862), (p. 380 ).〕 nevertheless the experiment remains associated with Pascal in many elementary physics textbooks.〔see e.g. E. Canon-Tapia in: Thor Thordarson (ed.) ''Studies in Volcanology'', 2009, ISBN 9781862392809, ( p. 273 ).〕 == See also == * Pascal's law * Ruina montium * Vertical pressure variation 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pascal's barrel」の詳細全文を読む スポンサード リンク
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