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3. Note on an Inequality

Published online by Cambridge University Press:  15 September 2014

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Extract

The tendency of the air contained in a soap-bubble is to expand in bulk, while that of the film is to contract in surface. Hence it becomes a curious question to decide whether both of these tendencies are not satisfied when two or more bubbles unite into one.

The excess of pressure inside a bubble, of radius r, over the pressure of the external air, is

where T is the contractile force of the film.

Type
Proceedings 1867-68
Information
Proceedings of the Royal Society of Edinburgh , Volume 6 , 1869 , pp. 292 - 293
Copyright
Copyright © Royal Society of Edinburgh 1869

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