Toysmith Euler's Disk 793631620531

Fascinating Desktop Illusions! Spin the holographic disk on the mirror. Does it speed up?. Listen to its rhythmic sounds. Why does the humming get louder as the speed of the disk increases?. Includes Euler's Disk, 9" concave mirror base and nine pieces of magnetized holographic foil.

Toysmith Euler's Disk – Create A Hypnotic Display of

Toysmith Euler's Disk – Create A Hypnotic Display of

Toysmith Euler's Disk – Create A Hypnotic Display of

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Toysmith Euler's Disk 793631620531

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