Raadiokiirgus

Raadiokiirgus is a term used to describe electromagnetic radiation in the range of frequencies that can be detected by radio receivers. These waves are produced by the oscillation of electric charges and can propagate through a medium or through space.

The term raadiokiirgus was first coined in the late 19th century when radio communication began to emerge as a technology. It was used to distinguish radio frequency waves from other forms of electromagnetic radiation, such as light and X-rays.

Raadiokiirgus waves have frequencies between 10 kHz and 10 GHz, which is the range that can be detected by radio receivers. They can be transmitted through various media, including wire, free space, and even through the Earth. Raadiokiirgus waves can be modulated to encode information, such as sound or images, and can be decoded using radio receivers.

The properties of raadiokiirgus waves are unique and make them useful for a variety of applications. They can propagate long distances with little loss of signal strength, making them ideal for communication over large areas. Raadiokiirgus waves can also penetrate solid objects, such as buildings and hills, making them useful for communication in areas where line-of-sight is not possible.

Raadiokiirgus is used in a variety of applications, including radio broadcasting, mobile phones, navigation systems, and radar systems. It plays a crucial role in modern communication and continues to be an important technology in the modern world.