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ERIC Number: EJ907127
Record Type: Journal
Publication Date: 2011-Jan
Pages: 6
Abstractor: As Provided
Reference Count: 23
ISBN: N/A
ISSN: ISSN-0143-0807
Derivation of Jurin's Law Revisited
Rodriguez-Valverde, Miguel Angel; Miranda, Maria Tirado
European Journal of Physics, v32 n1 p49-54 Jan 2011
The capillary rise/fall of a liquid within a thin capillary tube is described by the well-established Jurin's law. The liquid reaches an equilibrium height/depth as the capillary pressure is balanced by the hydrostatic pressure. When the adhesion force at the three-phase contact line is counteracted by the liquid weight, the liquid column also stabilizes. Both descriptions evidently coincide although they are based on different physical quantities. Most undergraduate textbooks do not mention why these two routes draw two identical results; besides, the proofs become conceptually incorrect. We review the underlying ideas in Jurin's law and the two possible derivations. (Contains 3 figures and 2 footnotes.)
Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: info@ioppubusa.com; Web site: http://www.iop.org/EJ/journal/EJP
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A