Mr. Wizard's World

Smoke Rings, To Dig a Mine, Hot vs. Cold Water Bottles, Card Trick, Computer, Alligators and more (3x13)

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Smoke Rings, To Dig a Mine, Hot vs. Cold Water Bottles, Three Pile Card Trick, Computer Reaction Timer, Alligator, Volume Challenges. SMOKE RINGS: As a few drops of milk sink in a glass of water, Chris sees rings which Mr. Wizard identifies as vortex rings. TO DIG A MINE: Deep inside that Colorado mountain, there’s a large supply of valuable ore.