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Disque d'Euler de Toysmith
Gross Motor Skills

Disque d'Euler de Toysmith

$46.99
Ages 8 and Up
In-Stock
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Fascinating Physics Demonstration Produces Incredible Optical and Audio Effects This 3” diameter chrome-plated steel disk creates a hypnotic display of light and sound as it rotates. Spin the disk and watch as it counterintuitively increases in speed on its mirrored platform and produces wild holographic images. Spinning for far longer than most will imagine possible, the disk audibly builds to an out-of-this-world crescendo before coming to an abrupt halt. Funky physics at its finest! Makes for an incredible desk toy for the office or an amazing demonstration for the classroom. Try shining a flashlight on it when spoiling in a dark room for even more incredible effects. Includes 3” Euler’s Disk, 9” concave mirror base and 9 pieces of magnetized holographic foil. For ages 8+. The Physics Behind Euler’s Disk: When 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 spoil (spin and rotate) forever if it were not for friction and vibration. Like a top. Euler’s Disk uses angular momentum to hold itself upright. As the disk spoils around in a circle it is held in place by a balance of the gravitational force pulling the disk down and the force applied by the mirror base which holds the disk up.

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Super fun to look at when you're bored. I feel like I enjoy it more than my niece!

- Reviewed by Serena on November 5, 2018

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