Understanding surface tension |
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Authors: | The Rev. G. D. Yarnold |
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Affiliation: | Warden of St. Deiniol's Library, Hawarden |
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Abstract: | This article discusses the presentation of the facts of capillarity at the level of the upper forms of schools or the first year of a university course. The usual formulae are derived consistently from energy considerations, and care is taken to justify such geometrical approximations as are unavoidable. A plea is made that the subject be taught from the beginning in terms of surface energy, so keeping in sight of physical reality. |
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