American Scientific Pendulum Wave Desktop Decoration Model | Create Incredible Wave Patterns | Show Off Science with Some Desk Decor

It's the functional thing. It's slightly unstable (Slightly), but it arrived in good quality, with all the cords (Plastic) proper length. The bearings themselves are a bit big, but its good.If you want one of these, this is a pretty good one to get.

My kids love watching the patterns!! They ask me to start it over and over!!

It's very pretty,but my strings are messed up on the last ball,so it don't swing like it's supposed too.

One tangled mess due to PATHETIC packaging. Most reviews mention destroyed, had to try it. After several hours to untangle just two, I conceded to defeat like the US in Afghanistan. Have reordered one more time!Received replacement in great shape. Product performs well for the price!

One of the support strings was broken.

The item is generally attractive and the description is correct, but considering that it's being sold for $50, the quality of the assembly is extremely poor. As shown in the description, the metal bar that supports the balls does not actually fit in the slots in the two supports. At best, you can sort of wedge it in there, but it does not go in all the way on either side. Meanwhile the four "feet" have the opposite problem and fit far too loosely into the two base pieces, meaning that the whole thing falls apart if you pick it up. While I personally found the packaging appropriate to prevent any tangles during shipping, I do agree with other reviewers that, if you allow it to get tangled after they're out, it's extremely tedious trying to see the fishline well enough to untangle it again.

I find it fascinating. Sir Isaac Newton's Pendulum Wave. How it simulates phases, beats, and frequencies. I did have to help expand the wooden openings on each end to properly fit the ball connection. Plus it helped it was packed tight enough. So the balls wouldn't escape and end up tangled. It did need extra careful packing bubble wrap.

I was very disappointed with my purchase. When I placed my order, I was excited to receive artwork.When I received it, all of the ball strings were tangled. Instead of being a piece of artwork to enjoy, it turned into a disappointing experience. The strings are so twisted, I can not un-tangle them.