A small air bubble in a liquid is observed as it slowly rises toward the surface under conditions such that the change in hydrostatic pressure with depth cannot be neglected. The equation of motion is found to be of the form predicted by a simple, laminar−flow model. Bubbles which rise faster move with a distinct oscillatory motion for which there is no simple explanation.
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© 1975 American Association of Physics Teachers.
1975
American Association of Physics Teachers
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