Can fingers and a bright light create diffraction patterns?

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Offline thedoc

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Philip Clarke  asked the Naked Scientists:
   Dear Naked Scientist,

I am a Physics Teacher, looking for examples from the real world that the children can relate to.

I have heard that using just your fingers and a bright source of light that you can see the effects of light diffraction, such as a fringe pattern. However, I'm not so sure. I think that my skin is opaque and that affects it. Any suggestions would be of interest.

R Clarke

Letchworth

What do you think?
« Last Edit: 21/03/2012 09:12:01 by _system »