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- From: rmathews@zeus.calpoly.edu (Robert B. Mathews (bob))
- Newsgroups: sci.physics
- Subject: Re: The Bubbles
- Message-ID: <1992Jul28.213910.171698@zeus.calpoly.edu>
- Date: 28 Jul 92 21:39:10 GMT
- References: <1992Jul28.105101.16100%clwu@Uz.nthu.edu.tw> <1992Jul28.211139.160466@zeus.calpoly.edu>
- Organization: California Polytechnic State University, San Luis Obispo
- Lines: 19
-
- mdturner@riker.acs.calpoly.edu writes:
- >Ching-Long Wu (PHYS U790315) writes
- >> I am quite interested in the behavior of the bubbles that floating
- >>on water's surface. I have several questions:
- >> 1. What's the shape of it? Is it a perfect semi-sphere?
- >
- >If the water surface were stationary it would have to be a perfect hemisphere.
- >The base of the bubble would change to eliptical as the water's motion
- >incresed. Size depends on the radius of the bubble (the volume of gas) in
- >comparison to the curvature of the wave.
-
- Are you sure of this? I seem to remember, from looking at bubbles,
- that the water tends to get pulled up the side of the bubble by surface
- tension. This distorts the bubble, especially with small bubbles. I
- would not expect to find a nice right angle corner where the bubble
- meets the water surface... You would need one to have a "perfect
- hemisphere."
-
- swehtam bob
-