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"Lawrence Welk" Bubble Solution

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Uploaded by on Nov 22, 2010

A test of some old containers of concentrated soap film. The bubble solution is mixed with water and suspended in a ring to see interference patterns in the reflection off of a light box. 50 ml of solution is combined with 50, 75, and 100 ml of water to see what concentration works best.

For more details on our setup see http://sciencedemonstrations.fas.harvard.edu/icb/icb.do?keyword=k16940&pa...

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Uploader Comments (NatSciDemos)

  • Do the colors in the bubble have to do with the different angles of refraction of the different wavelenghts?

  • @Verruckter The colors arise from constructive and destructive interference of reflections from the back and front of the soap film. That interference depends on the soap film thickness (it's thickest at the bottom of the film) as well as the wavelength. Changing the angle would have a minor effect as that would just change the distance the light travels through the film by a small amount.

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All Comments (9)

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  • dude this is nuts!

  • Beautiful!

  • @NatSciDemos I see! Thanks for the explaination!

  • Far out man...

  • thats trippy

    

  • cool...

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