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Results tagged with pressure
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user 45640
This tag is for questions relating to pressure, in the physical sciences, the perpendicular force per unit area, or the stress at a point within a confined fluid.
24
votes
Why is the pressure inside a soap bubble higher than outside?
The increased pressure is caused by the surface tension between the soap and the surrounding air. This can be seen by a simple equilibrium energy argument. … The pressure difference is two times the Laplace pressure $2\gamma/R$. …
- 904
31
votes
4
answers
45k
views
Why is the pressure inside a soap bubble higher than outside?
Apparently, the air inside a soap bubble is under higher pressure than the surrounding air. This is for instance apparent in the sound bubbles make when they burst. … Why is the pressure inside the bubble higher in the first place? …
- 904
22
votes
Accepted
Why do bubbles make a sound?
The air pressure inside the (intact) bubble is larger than in the surrounding. … This pressure difference is called Laplace pressure and is caused by the surface tension between the soap film and the air. …
- 904