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I am thinking that, A surface is a minimal surface if and only if the mean curvature is zero. then, for a liquid bridge with a catenoid shape, there should be no Laplace pressure due to the zero mean curvature.

But it is a capillary bridge with concave meniscus, how can it have no Laplace pressure?

Any smart guy tell me what is wrong with my understanding on this? Thanks a lot!

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# About minimal surface

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