| electromagnetic radiation |
Energy can be carried through space as radiation. This radiation moves at the speed of light and posesses both wave and particle properties.
출처: eies.njit.edu/~kebbekus/definitions_for_chapters_1...
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| electromagnetic spectrum |
Range of electromagnetic waves or radiation that is the result of energy emitted by hot objects (eg, the sun).
출처: fwie.fw.vt.edu/tws-gis/glossary.htm
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| electromagnetic field |
invisible lines of force that are the result of the use of electricity, such as anything plugged into an outlet or operated by a battery.
출처: www.austinheart.com/patients_mi_mt.html
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| electromagnetic wave |
an electric field spreading in wavelike-fashion through space at a speed of about 300 000 km.sec, with its direction and intensity at any point in space oscillating rapidly back and forth. James Clerk's Maxwell's theory in 1864 suggested that light was such a wave, and today we know that such waves include all forms of light--also infra-red and ultra-violet, as well as radio waves, microwaves, x-rays and gamma rays.
출처: www-spof.gsfc.nasa.gov/Education/wgloss.html
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| electromagnetic field |
(EM field)--the regions of space near electric currents, magnets, broadcasting antennas etc., regions in which electric and magnetic forces may act. Generally the EM field is regarded as a modification of space itself, enabling it to store and transmit energy.
출처: www-spof.gsfc.nasa.gov/Education/wgloss.html
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