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 A 1/2-inch thick, 3-inch wide chrome plated steel disk. One edge is carefully machined to a smooth radius. Nine pieces of magnetized holographic foil make a variety of brilliant surface designs. A concave mirror base provides a setting for the disk to spin on like a coin. When the Euler's Disk is spun, the disk contains both potential and kinetic energy. The potential energy is given to the disk when it is placed upright on its side. The kinetic energy is given to the disk when it is spun on the mirrored base. Euler's Disk would spoll (spin and roll) forever if it were not for friction and vibration. The Euler's Disk can spoll up to 3 minutes amazing scientists, students, musicians and even executives.
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**There is a $5 minimum order
Kansas Residents Only: Sales tax will be added to final order
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