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Euler's Disk
| Object | Spin the disk on the plate and watch it rotate for minutes! |
|---|---|
| Brand | Toysmith |
| Types | Classic Favorites, Gadgets |
| Dimensions | Plate is 23.3 cm x 1.2 cm / 9.2 in x 0.5 in |
| Packaging | Cardboard Box |
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Product Info
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.
What is it?
Euler's Disk is a chrome plated steel disk the is 1/2 inch thick and 3 inches wide. One edge is carefully machined to a smooth radius. Use any combination of the nine magnetized pieces of holographic foil to make a variety of brilliant surface designs. A concave mirror base provides a setting the the disk to spin on like a coin... a coin that doesn't seem like it will ever stop.
The action of the disk is "spolling" which means rolling and spinning. Hold the disk upright, slightly angled onto it's rolling edge and give it an easy twist. That's all there is to it. A spolling Euler's Disk produces a captivating sonic hum and a magical holographic display.
The scientific principles involve energy. When Euler's disk is spun, it contains both potential and kinetic energy. Theoretically speaking, the disk would spoll (spin and roll) forever if it were not for friction and vibration.
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Customer Reviews
4
Disclaimer: These reviews are written by our customers. Puzzle Master makes every attempt to keep these posts informative and relevant. If you find a post objectionable or inappropriate, please let us know by sending an email to info@puzzlemaster.ca
It was neat. For the value proposition, it felt a little overpriced, but on the flip side I can appreciate the engineering that went into creating this. Will I buy it again: no. Will I show it to all my friends: probably. Will any of them think it's impressive enough to buy too: probably not. The disk is quite heavy with a good amount of heft in your hand. With even a gentle spin (that anybody could easily do), we got this spinning for > 90 seconds. You could probably get even longer out of it if you spun it really well. The first time I tried it I thought I did it "wrong" and I stopped it after a few seconds. However, what I realized later was that the main spinning phenomenon isn't in the upright position, but more when the disk is already mostly tipped over. The coolest part I enjoyed was near the end when the spinning is almost done. The sound gets louder and it sort of sounds like the stereotypical alien spaceship taking off (for lack of a better explanation). It's neat. I had fun with it, but it wasn't cool enough to warrant 5 stars. It did what it claimed (but I was kind of hoping for several minutes, something I could leave on a desk and walk away for a bit, then come back and still see it spinning; it's not that). I'm curious if anyone else has impressive durations or technique suggestions for spinning it differently, but I suspect what I experienced is about all one can do with it.