Moon Drop Desk Fidget Toy, Displaying Gravity Moon and Mars, EDC Focus Toy Moondrop for Kids & Adults - Best Stress Reducer Relieves ADHD Anxiety and Boredom

It’s pretty cool, mostly what I expected. I was under the impression it came with both Mars and Moon gravity simulators but it was just the Mars one (I probably wouldn’t have purchased if I knew beforehand as I wanted both. Still a nice fidget you regardless though. The sides do come unscrewed a little if you don’t use the stand, and I had to figure out how the magnets went together inside (and actually getting them in there was a pain) when it popped open. Screwing the top back on, all this metal dust kept falling so something must’ve been grinding against something else. Slightly more cheaply made than I’d hoped, but works. I just wish I had the moon piece too.

I’m guessing inside the well machined aluminum main cylinder are some magnets (neodymium?) . When the copper rings “float” down the cylinder an electric current is created, like an electric motor or electric generator. I don’t really know much more of the physics and am not sure why the magnet and copper react like they do. I’m sure somewhere on YouTube there’s a video showing how a magnet slows down as it falls through a copper tube. I have done that and fascinated friends, now I can show them this cool mobile friendly version of this phenomenon in reverse!It’s also a cute desk or shelf ornament as it is made so well and precise.I know several hyper folks who I plan on getting one for a present!If you are of the fidgety type, get oneIf you enjoy sleek figures that do something get one as well and join the scientific fidgeter club!

Its more or less what I was expecting. I was under the impression that the whole object would behave like it was subjected to the moon's g. However it is just the copper collar that is. This makes sense now that I have held it in my hand. Due to the difference in mass between the main bar and the collar, it would not make sense it would behave in this way. However, this was not something that was immediately obvious when I was placing the order. Holding the object by the copper collar and allowing the main bar to slide back and forth feels more or less like what a similar object like this would under normal gravitational effects. It is only when the bar is stationary and the collar is moved do you see the slowed-down effect. The whole object is also a little smaller than I thought it would be. Overall its ok...kind of a novelty. I would be interested to know if the 'real' moondrop from the kickstarter campaign is any better.

I carry a small supply of fidget objects to help students focus in the classroom. I will expand upon the pros and cons of this item when I am back in the classroom. So far it looks great and is well made. I have found that if something is made of metal or a sturdy material, it lasts a lot longer. I will change the number of stars if it calls for it. I have had plastic infinity cubes that got broken within a few minutes of allowing a student to use them.

The Moondrop fidget toy is a really cool grown-up's toy that demonstrates how a magnetic field can create an electrical field that affects metal materials not normally affected my magnetism. But DO NOT UNSCREW THE ENDS! There are specially placed magnets inside it that cause the effect and they will fly away never to be found again making it useless. I know because I did it. When the seller asked in an email how I was enjoying the product I told him what I had done and how bummed out I was about it and he took care of it much more than I would have expected. Trust this seller. My experience says you can.

My daughter was thrilled with the fidget toy. At first she wasn’t exactly sure what to do with it and we will see over the long run if it enjoys a good amount of use, but the fact that its surfaces are smooth metal and its movement is equally smooth makes it tactility very enjoyable. It is exceptionally well made! Also it is quite different from other fidget toys on the market, and variety of options is key. This is especially true as a narrow number of such devices have become mainstream. It is harder to find other options without diligently seeking them out. So thank you for providing something that is unique and is clearly designed with my kind of end user in mind!

The Moondrop Fidget toy is exactly what I expected. I'm quite familiar with the resistance to movement generated by copper moving through a magnetic field. The California Academy of Sciences in San Francisco has a large and very intensely magnetic demonstration of this property which is fascinating to watch. This toy is very nicely made and does exactly what I expected. I only wish it could be bigger, but I understand the limitations of a pocket-sized toy.

There is one moving part, a copper ring on a vertical shaft that drops in earth gravity at a slower rate than you would expect. If you understand what happens in the copper ring as it moves through a changing magnetic field you will know how this is accomplished. Play with the toy amounts to lifting the ring and watching it fall slowly down the shaft. Well made.