CLXXV.—The determination of surface tension from the rise in capillary tubes
CLXXV.—The determination of surface tension from the rise in capillary tubes
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CLXXV.—通过毛细管上升来测定表面张力
DOI：
10.1039/ct9211901483
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通讯作者：
S. Sugden
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作者：
S. Sugden
不同的观测者所记录的许多普通液体的表面张力值之间的巨大差异是众所周知的，并已成为许多讨论的主题。理查兹和库姆斯已经证明了这一点。化学。Xoc。（1915,37,1668），就毛细上升法而言，在许多情况下，这些差异是由于对用于计算表面张力的公式所涉及的近似值的理解不足。已故的瑞利勋爵（Lord Rayleigh, Proc. Roy）曾讨论过毛细管的理论。Xoc。[a], 2002,(1)。对于半径为r的窄管，其中半月板位于液体平面表面上方的高度h处，瑞利给出了这个方程
THE large discrepancies between the values recorded by different observers for the surface tension of many common liquids are well known and have been the subject of much discussion. It has been shown by Richards and Coombs (J. Amer. Chem. Xoc., 1915, 37, 1668) that, as far as the method of capillary rise is concerned, these discrepancies are, in many cases, due to insufficient appreciation of tshe approximations involved in the formula used to calculate the surface tension.The theory of the capillary tube has been discussed by the late Lord Rayleigh (Proc. Roy. Xoc., 1915,[A], 92, 184). For a narrow tube of radius r in which the meniscus stands at a height h above a plane surface of the liquid Rayleigh gives the equation