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Electromagnetic waves are produced by the motion of electrically charged particles. These waves are also called "electromagnetic radiation" because they radiate from the electrically charged particles. They travel through empty space as well as through air and other substances.
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www.lbl.gov/MicroWorlds/ALSTool/EMSpec/EMSpec.html
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Britannica online encyclopedia article on electromagnetic radiation (physics), in terms of classical theory, the flow of energy at the universal speed of light through free space or through a material medium in the form of the electric and magnetic fields that make up electromagnetic waves such as radio waves, visible ...
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www.britannica.com/EBchecked/topic/183228/electromagnet...
www.britannica.com/EBchecked/topic/183228/electromagnetic-radiation
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In theory, any electromagnetic radiation can be detected by its heating effect. This method has actually been used over the range from x-rays to radio. lonization effects measured by cloud chambers, photographic emulsions, ionization chambers, and Geiger counters have been used in the γ- and x-ray regions.
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www.answers.com/topic/electromagnetic-radiation
www.answers.com/topic/electromagnetic-radiation
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Light, electricity, and magnetism are manifestations of the same thing called electromagnetic radiation. The energy you see coming out of the computer screen you are using to read this page is made of fluctuating electric and magnetic energy fields.
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www.astronomynotes.com/light/s3.htm
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Electromagnetic Radiation (Light) ... Go to Astronomy Notes home ... At least 95% of the celestial information we receive is in the form of light. Because of this fact, astronomers have devised many techniques to decode as much as possible the messages that are encoded in the often extremely faint rays of light.
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www.astronomynotes.com/light/s1.htm
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Electromagnetic radiation is the result of oscillating electric and magnetic fields. The wave of energy generated by such vibrations moves through space at the speed of light. And well it should... for visible light is indeed one form of electromagnetic (EM) radiation.
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www.windows.ucar.edu/tour/link=/physical_science/magnet...
www.windows.ucar.edu/tour/link=/physical_science/magnetism/em_radiation.html&text=t
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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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The Radiation Research Trust is an independent body that provides the facts about electromagnetic radiation and our health to the public and the media. ... After that, they should encourage them to text rather than to make calls, as texting exposes their brains to lower levels of electromagnetic radiation.
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www.radiationresearch.org/
www.radiationresearch.org/
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