Product Introduction: This desktop display model is a version of Newton's cradle, a device that demonstrates conservation of momentum and energy via a series of identically sized swinging spheres. When one ball on the end is lifted and released, the resulting force travels through the line and pushes the last ball upward. Because it uses Newton's Laws, it was named after Sir Isaac Newton, English physicist, mathematician and astronomer, but was actually invented in 1967 by an English actor. Product information: Ball Size:0.39 in Weight: 12.35 oz Length:7in Width:5.7in Height:6in Color: Black Swing time: 40 seconds Package: Newton's Cradle * 1 Warm Tips: If you like our products, I hope to leave your opinion.If you have any questions about the product, please contact us in time, we will solve it for you in the first time.
K**8
Balance Balls/Newton's Cradle
The item works as it should. Box was a bit damaged in transit. Balls don't bounce off of each other for as long as I expected them to, but I don't have another set to compare them to.
A**R
Great product!
This product is well made and looks great. It was a gift for my ten-year-old son and it's great to have him entertain himself or think about something that is not a computer or video game. We all love this product, though. It's mesmerizing.
A**.
garbage
This is a piece of garbage. Poor build quality, the balls don't continue clicking, it's a piece of junk. Don't waste your money.
B**N
Cheap product
thought it would be better quality, box was already opened inside of packaging which broke one of the plastic frames.
O**N
Very Easy To Assemble
Excellent Product For Relaxation
A**L
Pueden mandar otro plissssd
Se me callo y se me rompió
N**
Broken upon arrival.
Balls were broken.
F**Y
Waste of money
Garbage
Trustpilot
1 week ago
1 week ago
