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Graham's Law of Diffusion: Helium Voice Wizard of Oz Munchkins

Instructors and the Lecture Demonstrator dress up as the Lollipop Guild people in the Wizard of Oz and sing the Lollipop Guild song with Helium gas in their voice box
Lollipop Guild Wizard of Oz Image956

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© Copyright 2012 Email: Randy Sullivan, University of Oregon Chemistry Department and UO Libraries Interactive Media Group