Cloud chambers

Fremantle

Last year I went to the Exploratorium and was fascinated by the cloud chamber. It's a terrifically lowtech-looking machine that shows you the paths of cosmic rays as they pass through the building. They're also called scintillators.

I don't know if they're related (I'm no physicist) but this random number generator sounds pretty cool, and reminded me of the joy I had watching the cloud chamber.

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