Eddy Current and Energy

Thermochromic materials are materials that undergo a color transition by causing a change in the molecular structure of an organic compound through electron transfer at a specific temperature; Wireless charging technology involves passing alternating current of a certain frequency through a primary coil, generating a certain current in the secondary coil through electromagnetic induction, and transferring energy from the transmitting end to the receiving end; Suspension is a sudden change in magnetic field that occurs when a coil passes through a strong current, causing a strong induced electromotive force on the tin foil placed above the induction cooker. As the tin foil is a closed conductor, it generates a strong current and a strong magnetic field. Due to the repulsion between this magnetic field and the magnetic field generated by the coil, the tin foil will jump up high.

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.