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Ottawa Citizen - There's more to dry ice than a mystical fog
(Chemistry prof Joe Schwarcz): "Double, double toil and trouble, fire burn, and cauldron bubble!" But how do you make that cauldron bubble on stage? That's what the stage manager of a local production of Macbeth wanted to know. Wasn't too hard to answer that one. It just takes a little chemical witchcraft in the form of dry ice!
Published: 26 August 2012
Â鶹´«Ã½ÍøÕ¾ Chemistry professor Joe Schwarcz
"Double, double toil and trouble, fire burn, and cauldron bubble!" But how do you make that cauldron bubble on stage? That's what the stage manager of a local production of Macbeth wanted to know. Wasn't too hard to answer that one. It just takes a little chemical witchcraft in the form of dry ice!