Do it yourself cloud chamber

Classroom cloud chambers provide a first-hand experience viewing particle tracks
quarknet.fnal.gov/resources/cloudchamber.shtml

Home made particle detector
www.fnal.gov/pub/inquiring/questions/homemadepdetector.html

www.scientificamerican.com/article.cfm?id=a-canteen-cloud…

Fermi National Accelerator Laboratory (Fermilab), fnal.gov/ located just outside Batavia, Illinois, near Chicago, is a US Department of Energy national laboratory specializing in high-energy particle physics. As of January 1, 2007, Fermilab is operated by the Fermi Research Alliance, a joint venture of the University of Chicago, Illinois Institute of Technology and the Universities Research Association (URA). Fermilab is a part of the Illinois Technology and Research Corridor.
en.wikipedia.org/wiki/Fermilab

Picture taken by Michael Kappel at Fermilab
View the high resolution image on my photo website
Pictures.MichaelKappel.com