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Arif 04:57:56 pm on January 1, 2010 | 0 | # |
Tags: basic, equation, interfacial tension, Myers 2006, Pashley 2004

Young Laplace equation:

$\Delta\rho=\sigma(\frac{1}{r1}+\frac{1}{r2})$

other uses γ instead of σ for surface/interfacial tension (i.e. Pashley 2004). Common unit is dyne/cm (1 dyne = 1 micro Newton (μN) ).
Arif 12:51:26 pm on December 31, 2009 | 0 | # |
Tags: Pashley 2004, standard citation

Pashley RM, Karaman ME. 2004. Applied Colloid and Surface Chemistry. West Sussex: J Wiley.
Arif 12:47:59 pm on December 31, 2009 | 0 | # |
Tags: book, Pashley 2004, reference

Applied Colloid and Surface Chemistry
Richard M. Pashley and Marilyn E. Karaman. 2004 John Wiley & Sons, Ltd. West Sussex PO19 8SQ, England.
Arif 12:43:53 pm on December 31, 2009 | 0 | # |
Tags: basic, interfacial tension, Pashley 2004

Surface energy of a liquid actually gives rise to a ‘surface tension’ or force acting to oppose any increase in surface area.

Thus, we have to ‘blow’ to create a soap bubble by stretching a soap film. A spherical soap bubble is formed in response to the tension in the bubble surface.