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Uploaded on Oct 8, 2009
This video will demonstrate how to make ice by boiling water using an Edwards vacuum pump in 90 seconds. Liquid boils when the vapour pressure of the liquid is equal to the pressure exerted on it. When pressure on a liquid is reduced the vapour pressure is also reduced and the boiling point drops. See our demonstration or visit www.edwardsvacuum.com to find out how vacuum works.