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The Radioactivity class covers the various types of radiation as well as a hands on demonstration of using a Geiger counter of some radioactive materials. This class is currently being updated and is intended to include a cloud chamber where you can visualize the radiation emitted as it interacts with a cloud of solvent vapors.
Temporary Image until we make our own:
https://commons.wikimedia.org/wiki/File:CloudChamberRadium226.gif
