Actually, the wave displayed ... field, an electromagnetic field produces current in a wire (or antenna). This current is then amplified and processed by the radio.

The film explains the concept of electromagnetic waves, particularly focusing on their applications in radar, radio, and television. It describes how a crystal set functions as a simple radio receiver ...

The systematic investigation of the properties and characteristics of these very short waves was taken up in view of the advantages which they seemed to offer in the field of practical radio ...

Electromagnetic radiation is the general term for the more familiar light and radio waves, but also includes gamma rays, x rays, ultraviolet rays, and infrared. All of these forms of electromagnetic ...

Radio waves are used for communication such as television ... Infrared radiation is used by electrical heaters, cookers for cooking food, and by infrared cameras which detect heat sources in ...

the upper layer of the atmosphere that reflects electromagnetic radio waves. When some of those waves are a matching wavelength, they vibrate together and increase in strength to form the Schumann ...

which can then be decoded when the wave is received. Television and radio systems use this principle to broadcast information. Infrared light is used by electrical heaters, cookers for cooking ...

All forms of electromagnetic radiation, whether they're called waves or rays, are generated by particles in motion. In a radio signal, for example, negatively charged electrons quickly move back ...