The Newton’s Cradle Light changes colour as it swings.
There are three colors of the balls when it is working. You can press the button on the left to change the colors. Don’t forget to check out the ScienceGeek Perpetual Motion desk toy.
You can put it on your office desk or your home desk or on your shelf. It will be cool desk toy
Performing based on Newton’s Laws
Power: 6 x AA Batteries (Not included)
Check price on Amazon.com ►
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