Mr. Wizard's World

Hero Engines, Printmaking, Lions, Scissors and String Puzzle, Joints, Orion, Computer Art, and Hands and more (2x15)

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Hero's Engines, Potato Printmaking, Lions, Scissors and String Puzzle, Gum Drop Joints, Orion, Computer Illustration, Hot/Cold Hands. Mr. Wizard describes the Greek philosopher, Hero, who invented an engine. A model of it is a flask with two glass tubes coming from opposite sides. It's hanging by a string from a lab stand.