Cloud chambers let you see paths left by ionizing radioactive particles. Traces appear as the particles ionize super-cooled alcohol vapor - causing it to precipitate.
Most cloud chambers require messy / inconvenient dry ice or other external cooling. They also need extended periods of time to reach operating temperature.
The Nothing Labs Electronic Cloud Chamber uses a thermoelectric ("Peltier") / air cooling system to quickly chill its surface plate to -30 Fahrenheit without dry ice.
As far as I can tell - this is the first cloud chamber design that uses electronic / peltier cooling which doesn't need external secondary cooling (like cold water).
I came up with this cloud chamber in early 2010 - and promptly published most of my findings online.
So - if your idea of a fun weekend involves thermal paste and heatsinks - check out the Instructable.
Otherwise - I'll build you a really nice looking one for a small fee.
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