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00:01:32
An introduction to the jitterbug, a simple motorized toy made of a recycled CD and a DC motor.

00:10:57
A detailed demonstration of how to make this toy, including a discussion of materials needed.

00:01:41
The science behind this toy, including a discussion of how electric circuits work, and how an unbalanced load (an off-center weight on your jitterbug) results in rotational vibration.

00:37:16
The Exploratorium's Ron Hipschman shows how a double disk with a string attached is a great way to study the physics of motion. Then Captain Yo and Doc Popular astound with amazing yo-yo tricks.