Euler's Disk - The Spinning Coin That Spins For Minutes

You've probably spun around a coin for fun at some point, but this physics toy uses the physics of a spinning coin to keep spinning faster and faster for up to 2 minutes. As seen on The Big Bang Theory, this physics toy, named after Leonhard Euler (pronounced "oiler") when spun on a nearly frictionless parabolic mirror will keep spinning faster as it approaches the surface until it finally comes to an abrupt stop.

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