Radio waves - Wikipedia, the free encyclopedia
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Radio waves may be any part of the electromagnetic spectrum used for radio communication. Radio waves were first predicted by mathematical work done in 1865 by James Clerk Maxwell. Maxwell noticed wa...
en.wikipedia.org/wiki/Radio_waves
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AM radio, FM radio, CB radio... These are all different chunks of the radio spectrum. Find out about the thousands of different uses for radio waves! ... A radio wave is an electromagnetic wave propagated by an antenna. Radio waves have different frequencies, and by tuning a radio receiver to a specific frequency you can pick...
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www.howstuffworks.com/radio-spectrum.htm
www.howstuffworks.com/radio-spectrum.htm
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Radio waves control everything from wireless networks to garage door openers. Find out how radio works and look at radio reviews and radio prices. ... "Radio waves" transmit music, conversations, pictures and data invisibly through the air, often over millions of miles -- it happens every day in thousands of different...
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www.howstuffworks.com/radio.htm
www.howstuffworks.com/radio.htm
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Radio - Wikipedia, the free encyclopedia
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Radio is the transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fi...
en.wikipedia.org/wiki/Radio
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Radiation is energy that travels and spreads out as it goes-- visible light that comes from a lamp in your house and radio waves that come from a radio station are two types of electromagnetic radiation. Other examples of EM radiation are microwaves, infrared and ultraviolet light, X-rays and gamma-rays.
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imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.h...
imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html
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IK1QFK, Renato Romero Home Page - Exploring ULF-ELF and VLF radio band ... VLF RADIO RESEARCH; By Peter Schmalkoke ... RADIO WAVES below 22 kHz, Nature Radio Signals and strange emissions at very low ferquency...
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Different radio and TV stations transmit their programmes using radio waves with different wavelengths. ... Guglielmo Marconi invented the aeriel to send and collect radio waves over long distances.
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www.nelsonthornes.com/secondary/science/scinet/scinet/l...
www.nelsonthornes.com/secondary/science/scinet/scinet/light/radiat/radio2.htm
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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)
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www.factmonster.com/ce6/sci/A0860617.html
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