The use and importance of radio waves

1. The Use and Importance Of Radio Waves By Shelisa Raffington-Paul P10535997

2. Radio Waves Uses Radio waves have the longest wavelengths in the electromagnetic spectrum. Radio waves do more than just bring music to your radio. They also carry signals for your television and mobile phones. Mobile phones use radio waves to transit information they are smaller than TV and FM radio waves. The prime purpose of radio is to convey information from one place to another .

3. Wireless Technology What is wireless technology ? Wireless is a term used to describe telecommunications in which electromagnetic waves carry the signal over the communication path . Why is it so useful? It goes where the wire/cable cannot ( Wireless analytical systems utilize field-replaceable lithium thionyl chloride power modules, requiring no external power sources or additional wiring .) it provides broadband access extension, it is cost effective and it increases efficiency. It is used on most things we use daily like mobile phones, internet and home entertainment systems . Wireless enables a fully comprehensive access technology portfolio to work with existing dial, cable, and DSL technologies.

4. Radio Radio is one of our most important ways of communicating. Radio waves have frequencies from 300 GHz to as low as 3 kHz, and corresponding wavelengths from 1 millimeter to 100 kilometers Radio stations arrange songs and programs of particular genres to broadcast to listeners who tune in to hear them. Most stations provide short newscasts and talk radio provides a public forum where people can listen to interviews or call in to speak with the host or his or her guests. Sports events can be broadcast as an announcer provides a play-by-play description of the action. Companies can buy ad space on privately owned stations to air commercials designed to appeal to that station's listeners. Commercial vehicles such as taxis, trucks, and airplanes use radios to receive directions and report difficulties. Construction crews, farmers, ranchers, and other groups use radio to send and receive information such as instructions and warnings. Radio is used extensively in the military to facilitate communication between bases, ships, planes, military vehicles, and field units

5. Microwaves A microwave oven is a kitchen appliance that heats food by dielectric heating, using microwave radiation to induce polarized molecules within the food. A microwave tube (usually a magnetron) converts 60 Hz electric power into an electromagnetic wave, with standardized frequency of 2.45 GHz. Below is a figure from the original patent drawn by Dr.Percy Spencer of Raytheon Corporation, in 1950 (the first experiments date from 1946 ).

6. Bluetooth Bluetooth is a wireless technology for exchanging data over short distances. It is used with mobile phones consoles and PC’s. Bluetooth uses a radio technology called frequency-hopping which chops up the data being sent and transmits bits of it on up to 79 bands. Because the devices use a radio communications system, they do not have to be in visual line of sight of each other, however beams of radiation roaming in free space which are limited in terms of wavelengths and diffractions(quasi optical) must be viable .

7. Wi-Fi Wi-Fi is a wireless networking technology that uses radio waves to provide wireless high-speed Internet and network connections . It works without any wires between the receiver and sender using Radio Frequency technology, a frequency that involves radio wave propagation. When an RF current is equipped to an antenna, an electromagnetic field is conceived that then is able to reproduce through space.

8. Radar – Military Radar is an object-detection system which uses radio waves to determine the direction, speed, altitude, or range of objects. It can be used to detect aircrafts, weather forecasts, guided missiles and motor vehicles and terrain . Electromagnetic waves scatter from any large change in the dielectric constant or diamagnetic constants. If the wavelength is much shorter than the target's size, the wave will bounce off in a similar way to how light is reflected by a mirror. If the wavelength is much longer than the size of the target, the target is likely not to be visible . Short radio waves reflect from curves and corners like a sparkle from a broken bit of glass.

9. Conclusion Radio waves are important and they dominate most of today’s ways of transmit information in technology, being the longest wavelength in the spectrum. It is also faster, abrupt and economical way to transmit information. Without radio waves there would not be any good devices out there, the world is dependant upon radio waves to deliver great service.

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