A magnet falling down a copper tube is slowed by magnetic fields from eddy currents induced in the tube. A magnet falling down a glass tube is unaffected. Set up lab stands, each with a 3-finger clamp ...

The motion of a solid metal plate moving in and out between the poles of a strong magnet is damped out by eddy currents. When the slotted edge of the plate is used, the braking effect of induced eddy ...

Electric currents and magnetic fields are closely related. If you have one, you often have (or can make) the other. The braking force in the demonstration is due to an eddy current. That's an ...