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Analysis of a deflating soap bubble
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A soap bubble on the end of a cylindrical tube is seen to deflate as the higher pressure air inside the bubble escapes through a tube. We perform an experiment to measure the radius of the slowly deflating bubble and observe that the radius decreases to a minimum before quickly increasing. This behavior reflects the fact that the bubble ends up as a flat surface over the end of the tube. A theoretical analysis reproduces this behavior and compares favorably with the experimental data.
American Association of Physics Teachers (AAPT)
Title: Analysis of a deflating soap bubble
Description:
A soap bubble on the end of a cylindrical tube is seen to deflate as the higher pressure air inside the bubble escapes through a tube.
We perform an experiment to measure the radius of the slowly deflating bubble and observe that the radius decreases to a minimum before quickly increasing.
This behavior reflects the fact that the bubble ends up as a flat surface over the end of the tube.
A theoretical analysis reproduces this behavior and compares favorably with the experimental data.
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