A celt or rattleback is one of the most fascinating physics toys!
It is a long, thin, half-elliptical shape formed in plastic. It has a slightly offset center of gravity, which causes it to spin in a directional rotation of choice, usually counter-clockwise. Suppose you attempt to turn the celt or rattleback in the clockwise direction. In that case, strong preference will cause it to “rattle” back and forth after few rotations, stopping and then reversing the course back to the preferred counter-clockwise direction. Also, if you push down on one of its ends from rest, it will begin spinning.
Rattlebacks make a great desk toy and conversation starter.
Welcome to xUmp.com, your one-stop shop for all your scientific and STEM needs! Our extensive selection of science supplies has been carefully curated by real scientists and educators, ensuring that you'll find only the best and most educational products on our site. Whether you're a teacher looking for classroom supplies, a student gearing up for a science fair, or a science enthusiast looking for the perfect gift, we've got you covered. From chemistry glassware and lab equipment to robots and science kits, we have everything you need to explore the exciting world of science. Browse our store today and discover the wonder of science!