Question

How is electromagnetic radiation used in communication?

Answer 1

Electromagnetic radiation refers to the waves of the electromagnetic field which is propagating or radiating through space, carries electromagnetic radiant energy. It consists of radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. electromagnetic radiation consists of electromagnetic waves. Electrically charged particles emit electromagnetic waves which undergo acceleration.

Complete step by step answer:
Radio waves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays are types of electromagnetic radiation. Radio waves are used for communication. It is used for television and radio.
Radio waves are transmitted through the air easily. If absorbed by the human body, they will not cause damage. They can be reflected to change its direction. These properties make the waves ideal for communications. In electrical circuits, Radio waves are produced by oscillations. When radio waves are absorbed by a conductor. They made an alternating current. The electrical current has the same frequency as the radio waves.
Before transmission Information is coded into the wave. When the wave is received, it can then be decoded. Television and radio systems used this principle to broadcast information via channels.
Microwaves are used as an appliance for cooking food and also for satellite communications.
High-frequency microwaves have frequencies that are easily absorbed by molecules in food. when they absorb microwaves, the internal energy of the molecules raises. It causes heating. Microwaves pass through the atmosphere easily. So they can pass between stations to station on Earth and satellites in an orbit.

Note:
It is less expensive to send information using radio waves than to send information using atoms. Radio waves are very fast, they are massless and move with a speed of roughly $300000{\text{ }}km/s$ . Radio waves enable mobility. Hence it is useful in the car and listens to the FM radio. By reflecting from them Radio waves are used for radar or by your eye to detect objects in open space.