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00:00:45
An introduction to a spinning disc called a stroboscope, which lets you create your own animated cartoon.

00:04:32
A detailed demonstration of how to make a stroboscope, including a discussion of materials needed.

00:00:47
The science behind the Whirling Watcher stroboscope, including a discussion of the phenomenon called persistence of vision, which in this activity creates the illusion of a galloping horse.