Soap Film

From MariachiWiki

1 Introduction
2 Materials
3 Results
4 Image Gallery
5 References

Introduction

Soap bubbles are interesting physical systems. A thin membrane encloses air or any other gas. This membranes evolves and thins until it pops, as many people have observed. Soap Films are different systems. Many science museums have exhibits where you can make very large soap films. They pop just like soap bubbles, mostly because water evaporates. Continuous soap films are a way around this. How to make one is described in detail in Maarten Rutger's web site.

Continuous soap films is the best approximation to two dimensional flow.

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Materials

For our first attempt (Dec/07) we used Palmolive detergent (green color) and mixed it with water. The lines we used are mono filament fishing line 30 lb. We had two setups, a small desktop and then one with a 8 ft ladder.

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Results

Dec/07 - We were not able to have the film running for more than ~20s. We suspect that there was too much air currents in the room as the film would oscillate and then pop. We also attempted making a tetrahedron. The tetrahedron didn't happen, but instead we had a four membrane system as shown in the image gallery

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