Prof. Stan Christensen Demo

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Prof. Stan Christensen shatters a rose after freezing it in liquid nitrogen, then...

holds a rapidly expanding balloon, containing boiling liquid nitrogen, at arm's length, then...

blows large smoke rings using a low-tech contraption that anyone can make at home from a cardboard box and rubber bands, and finally...

illustrates that an ordinary balloon can withstand being deformed by sharp nails if you have enough of them arranged in the right way.