Radio Waves

The radio waves travel 1800 miles per second in the air. In contrast, sound waves move only 1/5 mile per second. If the radio waves that completely reproduce the amplitude and frequency characteristics of the original sound wave are modulated, the sound can be transmitted quickly over long distances. This brought about a very interesting phenomenon. During the live broadcasts in New York, music will be broadcast to the California audience, and it will take as little as a second to listen to New Yorkers sitting behind the concert hall.

Indirect Propagation: Radio waves can reach outside the line of sight by diffraction and reflection. Due to diffraction, radio waves can bend around obstacles such as building edges, car turns, or halls. Radio waves are also reflected from surfaces such as walls, floors, ceilings, vehicles, floors and so on. These propagation methods occur in short range wireless communication systems such as mobile phones, cordless phones, mobile phones and wireless networks. The disadvantage of this mode is multipath propagation, in which the radio waves propagate from the transmitting antenna to the receiving antenna via multiple paths. Wave interference, often causing fading and other receiving problems

The wavelength of radio waves is about 103 meters. As its name suggests, radio waves are transmitted via radio, TV, and even mobile phones. Radio energy level is lowest. Radio waves are used for remote sensing, where the hydrogen in the universe radiates radio energy at low frequencies and is collected as radio waves. They are also used in radar systems that emit radio energy and collect bounce energy. Particularly suitable radar systems for meteorology are used to predict weather patterns by mapping the surface of the earth as radio energy can easily break through the atmosphere. ;

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Radio waves are electromagnetic waves, microwaves, infrared rays, X-rays, gamma rays. The most famous radio waves are used for communication; televisions, mobile phones, and radios all receive radio waves and convert them into mechanical vibrations with speakers to produce audible sound waves. Electromagnetic radiation is transmitted by waves or particles of different wavelengths and frequencies. This wide range of wavelengths is called electromagnetic (EM) spectroscopy. Spectra are usually divided into seven areas in order of decreasing wavelength and increasing energy and frequency. Common names are radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays, gamma rays.