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The Joys of Air Pressure on 'Flying Circus of Physics'

Here’s a neat parlor room trick – firmly rooted in hardcore science, of course, courtesy of Cleveland State University Professor Jearl Walker.

Fill a glass with water. Hold any old piece of paper over the rim. Invert the glass … and prepare to have your mind blown.

The water stays in the glass! How on earth is this possible, you ask? Tune in to the latest gravity-defying installment of “The Flying Circus of Physics” to find out. (Parlor room not included.)

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