This well made physics device is in fact a small eddy current tube.Small, yet strong magnets are inside the tube and when the outside metal ring is allowed to fall, it falls very slowly. It is a perfect alternative to a fidget spinner if you want to just de-stress. The magnets are removable, so you can adjust the rate of fall. If you do remove the magnets exercise caution, they are very strong. There are magnets on each end and they need to be lined up with the same pole on each end.
With no magnets the ring drops according to gravity, as you add more magnets you can demonstrate the different rates of objects falling on other planets.
The metal base serves as an attractive way to display it on your desk top. Each is 2.5 inches tall and 3 inches tall when on the provided base. A great gift for any physicist.
The body is made from steel.
Safety WarningCHOKING HAZARD -- Small parts. Not for children under 3 yrs.