Radio waves?

Question

What are the uses and applications of radio waves and how do they affect our everyday lives?

Answer 1

this is a special application of radio waves:
Soil heating using electrical energy for optimization of various remediation methods
The application of radio frequency (RF) energy supplies as in situ method the possibility to evenly and defined heat soil. If it is necessary, heating can be carried out with relatively high heating rates. The RF technique is used for the heating of electrically non-conductive materials and works after the same principle as the microwave oven. Utilizing the low-frequent RF waves (frequency of 3 to 50 MHz), larger volumes (such as contaminated soil) can be treated. With this principle, the RF method is able to in situ reach contaminants which are deep buildings or other sealed surfaces. The method can be utilized at temperatures between -20°C and 400°C.

Potential application (studied in the working group) are e.g. support of microbial degradation of pollutants and the thermodesorption or sequestration of pollutants as bound residues in the soil matrix.

now uses on radio waves:
Uses of Radio Waves:
The prime purpose of radio is to convey information from one place to another through the intervening media (i.e., air, space, nonconducting materials) without wires. Besides being used for transmitting sound and television signals, radio is used for the transmission of data in coded form. In the form of radar it is used also for sending out signals and picking up their reflections from objects in their path. Long-range radio signals enable astronauts to communicate with the earth from the moon and carry information from space probes as they travel to distant planets (see space exploration). For navigation of ships and aircraft the radio range, radio compass (or direction finder), and radio time signals are widely used. Radio signals sent from global positioning satellites can also be used by special receivers for a precise indication of position (see navigation satellite). Digital radio, both satellite and terrestrial, provides improved audio clarity and volume. Various remote-control devices, including rocket and artificial satellite operations systems and automatic valves in pipelines, are activated by radio signals. The development of the transistor and other microelectronic devices (see microelectronics) led to the development of portable transmitters and receivers. Cellular and cordless telephones are actually radio transceivers. Many telephone calls routinely are relayed by radio rather than by wires; some are sent via radio to relay satellites. Some celestial bodies and interstellar gases emit relatively strong radio waves that are observed with radio telescopes composed of very sensitive receivers and large directional antennas (see radio astronomy).

Answer 2

Go back to the Cristal set the radio wave vibrated the Cristal and through a coil and a tuning condenser ( a variable condenser consisting of movable plates 8 or 10 that interacted with fixed plates 9 or 11 ) a signal could be tuned into. it gets very complicated because we have Carrier waves that can handle waves of different frequency they are then split up by the receiver for example video and audio and this keeps them as near as together. if they were sent separately the mouth would move out of time with the sound.( bit like a woman)

Answer 3

The main use of radio waves is communication. Television and radio as well as most global Internet communication is by radio waves. Long distance telephone is via radio waves to satellites and back to Earth. We also use radio waves in satellite navigation. Radio waves are used in RADAR which is essential for air traffic. Another everyday use of radio waves is in a microwave oven which uses very short wavelength radio waves.

Answer 4

it is feasible to thing that we could use them to generate electrical signals by detecting them and having the ossilations trigger an electrical pulse. This pulse we could then decode into sound waves by causing the pulse to travel through a copper wire wrapped around a magnet... with the proper advances in technology this should allow us to think about vibrating a thin membrane attached to that coil. Then we would be able to use out ears to detect those vibrations. Might our brains not then interpret such vibrations as it they were music or speech... we could then (merciful heavens) be enabled to communicate via radio waves over quite far distances... maybe sending a sound signal to the next village!

How cool is that!

Answer 5

Radio Frequency waves also called RF wves are used to transfer data (like TV or Radio) or power (in embedded devices generally for medical applications) from point a to b.
RF waves have a spectrum (http://en.wikipedia.org/wiki/Radio_frequency#Radio_frequency_spectrum)
and generally the higher the frequency the lower the reach of the signal.

Answer 6

Sound waves are longitudinal, your ears hear them, they travel at 1100 feet/sec. Radio waves are transverse, part of the electromagnetic spectrum, your need a radio receiver to pick them up and hear them, the travel at 186,000 miles/sec