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Nova Firewheel Sparks Gyrowheel

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Super Cool Physics Toys

Here is a spinner that generates sparks as you push its pin into the thread. The Nova Firewheel has a disc with metal pins that are pulled over emery paper to put on a show in a dark room. The transparent film lights up in red and blue.

The metal pins used in this have pyrophoric properties. The above video shows how the

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