Euler's Disk is a 1/2 inch thick, 3 inch wide, chrome plated steel disk. One edge is carefully machined to a smooth radius. 9 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... a coin that doesn't seem like it will ever stop!|
Hold the disk upright, slightly angled onto its rolling edge, and give it an easy twist. That's all there is to it. The rest is a combination of science, magic, and an increasingly compelling sonic hum. Use any combination of holographic film on top of the disk and/or a flashlight to enhance the visual effect of Euler's Disk.