Discovery of Electromagnetic Waves

Electromagnetic waves are actually a general term for electric waves and magnetic waves. Since electric and magnetic fields always appear, disappear, and convert to each other, we usually refer to them together as electromagnetic waves. During the propagation process, the electric and magnetic fields are perpendicular to each other in space and are both perpendicular to the direction of propagation.

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.

Voltaic stack: The basic composition of a battery requires positive and negative electrodes and electrolyte. A stack of paper sheets soaked in salt water, sandwiched between zinc and copper sheets, was used to generate an electric current. Faraday generator: When a conductor cuts magnetic field lines in a magnetic field, an electromotive force is generated inside the conductor. By rotating the coil and moving it in a magnetic field, an electric current can be generated. Discovery of Electromagnetic Waves Hertz Experiment: Hertz proved the existence of electromagnetic waves through oscillating circuits, verifying Maxwell's predictions.