Toysmith Euler's Disk
Par un écrivain mystérieux
Description
A hypnotic display of light and sound that spins science into art. The 3" diameter chrome-plated steel disk will spin faster and louder the longer it rotates. Just give it a spin and gravity does the rest. Includes Disk, 9" concave mirror base and 9 pieces of holographic, magnetized foil. 6 disks included per pack.
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? This patented 3 Diameter chrome-plated steel disk creates a hypnotic display of light and sound as it rotates. Includes Euler's disk, 9 Concave mirror base and nine pieces of magnetized holographic foil. Complete with instructions and the scientific answers! Your browser does not support our video.
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depuis
par adulte (le prix varie selon la taille du groupe)
