How electromagnetic waves used in communication?

Answer 1

All electromagnetic radiation can be used for communication, up to frequency of,

let's say, 3 x 1015 Hz (down to wavelength of, say, 100 x 10-9 m), in the ultraviolet.

Past that, higher frequencies (shorter wavelengths) are difficult to generate, modulate,

and control, are more hazardous to human exposure, and are absorbed in the atmosphere,

so they're not too practical for communication.

Answer 2

Electromagnetic waves are used in communication by carrying information through the air or space. Devices like antennas transmit and receive these waves, converting them into electrical signals that can be interpreted as sound, images, or data. Different frequencies of electromagnetic waves allow for various types of communication, such as radio, TV, cell phones, and Wi-Fi.

Answer 3

All parts of the EM spectrum can be used for communication. The most exploited however are radio waves and microwaves.

Answer 4

Visible light is a type of electromagnetic wave that is occasionally used for communication. More common examples, however, include radio waves and television waves.

Answer 5

Radio waves are transmitted at one antenna, and received at another. Also, light is shone through a glass fiber (fiber optics), and received at the other end.

Answer 6

wireless spectrum