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This is a continuation of the cloud chamber problem. I am using a c Coleman lantern mantle contains Thorium. I check it with my Geiger counter and it does cause clicks it should work... I think...any help out there?

The Scientific American book The Amatuer Scientist by C. L. Strong has a whole chapter devoted to cloud chambers. It is a bit involved to go into here. I believe the book is out-of-print; if you cannot find a copy, NEWTON-mail me your snail-mail address, and I will send you some photocopies.

John Hawley

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