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Re: [Phys-l] Electron vs. Alpha particle...

At 14:11 -0600 01/17/2011, brian whatcott wrote:

I see the bright spot
quite often on the ground when flying under a high Sun.

It's also pretty easy to reproduce in the classroom. Put a diverging lens in front of a laser and put a round-headed map tack (I usually support it by sticking it in an art gum eraser) between the lens and the wall so that it casts a reasonably large shadow on the wall. Then if you turn out the lights, you can see the Poisson spot quite easily. It is pretty bright.

Hugh
--

Hugh Haskell
mailto:hugh@ieer.org
mailto:haskellh@verizon.net

It isn't easy being green.

--Kermit Lagrenouille