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How to make a cloud chamber for observing cosmic rays using (mostly!) everyday household items. Presented by Suzie Sheehy (http://suziesheehy.co.uk/) and videography by Andrew Steele (http://andrewsteele.co.uk/).

This video came about as a result of setting up a workshop building cloud chambers for the APPEAL (Accelerator and Particle Physics at A-Level) teacher conference, in the John Adams Institute for Accelerator Science at the University of Oxford. The workshop was adapted from the CERN Cloud Chamber workshop, with the assistance of MIck Storr.

Please note that all activities involving dry ice and/or alcohol should be accompanied by a proper risk assessment and safety equipment. We cannot take responsibility for the outcome of any activity undertaken as a result of this video.