A simple experiment for measuring the surface tension of soap solutions

Authors
Roman, FL Faro, J Velasco, S
Citation
Fl. Roman et al., A simple experiment for measuring the surface tension of soap solutions, AM J PHYS, 69(8), 2001, pp. 920-921
Citations number
3
Categorie Soggetti
Physics
Journal title
AMERICAN JOURNAL OF PHYSICS
ISSN journal
00029505 → ACNP
Volume
69
Issue
8
Year of publication
2001
Pages
920 - 921
Database
ISI
SICI code
0002-9505(200108)69:8<920:ASEFMT>2.0.ZU;2-E
Abstract
A simple experimental method for measuring the surface tension of a soap so lution is proposed. In the experiment, a soap solution bubble is inflated b y a syringe that is also connected to a precision manometer. By measuring t he pressure change inside the bubble the surface tension can be calculated using the Young-Laplace equation. Experimental results for both toilet and dishwasher soap solutions are obtained. (C) 2001 American Association of Ph ysics Teachers.