Maximum bubble pressure method

This method is also recognized as bubble pressure method. In this surface tension method, the air-gas bubble is blown through a capillary at a continuous speed, which is deep in the test liquid. Its size is very circular in shape at first, but decreasing its radius increases the internal pressure and while the bubble size is hemispherical the pressure is maximized at this point the bubble radius is equal to the capillary radius lar.


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