Why is the decline so slow?

The exhibit features interesting interactions that allow visitors to discover the phenomenon of magnetic damping and explore its scientific principles.

Interaction type: Mechanical, hands-on. The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

The exhibit mainly consists of interactive booths, artificial stones, permanent magnets, interactive disks, etc. During participation, when visitors places disks of various materials on the magnetic field ramp and slides them down, induced currents, also known as eddy currents, will be formed inside the metal material. The size of the eddy currents formed will vary depending on the integrity of the disks. Eddy currents, when subjected to electric field forces in a magnetic field, generate an electromagnetic force that impedes motion, which in turn impedes the falling of the disk.