Electromagnetic radiation - Wikipedia, the free encyclopedia
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Electromagnetic radiation (sometimes abbreviated EMR ) is a ubiquitous phenomenon that takes the form of self-propagating waves in a vacuum or in matter. It consists of electric and magnetic field ...
en.wikipedia.org/wiki/Electromagnetic_radiation
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The wave, or "disturbance," is in an invisible thing called the electric force field. To understand electric forces, we have to learn something about charged particles like electrons and protons. Without these charged particles, there can be no electric force fields and thus no electromagnetic waves.
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www.colorado.edu/physics/2000/waves_particles/index.htm...
www.colorado.edu/physics/2000/waves_particles/index.html
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For the advanced student: Learn more about wave shapes in order to understand microwaves, radio and TV waves, produced by oscillating currents. Leaving Electromagnetic Radiation...
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www.colorado.edu/physics/2000/waves_particles/wavpart4....
www.colorado.edu/physics/2000/waves_particles/wavpart4.html
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The basic transverse electromagnetic wave, as shown to the left, involves both a varying electric field and a varying magnetic field, appearing at right angles to each other and to the direction of travel of the wave.
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www.play-hookey.com/optics/transverse_electromagnetic_w...
www.play-hookey.com/optics/transverse_electromagnetic_wave.html
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Heterostructure arrangements of uniaxial bicrystals have been discovered to produce electromagnetic fields with asymmetric distributions in guide wave structures. The property behind this remarkable phenomenon is the broken crystalline symmetry which allows the new physics to be seen in unsymmetric distributions.
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www.medscape.com/medline/abstract/15323696?prt=true
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Electromagnetic Wave (see text above) ... (The current also produces a magnetic field in accordance with Ampere's law, but that field decreases rapidly with distance.) Electric sparks create such back-and-forth currents when they jump across a gap--hence the crackling caused by lightning on AM radio--and Hertz in 1886...
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www-istp.gsfc.nasa.gov/Education/wemwaves.html
www-istp.gsfc.nasa.gov/Education/wemwaves.html
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Physlet Illustration: Production of an Electromagnetic Wave ... How does this produce an electromagnetic wave? How does the frequency of the oscillation affect the wave produced? ... Watch the electric field lines, and observe the "wave" created, which moves along the positive y direction (from left to right in the region to...
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physics.gac.edu/~chuck/PRENHALL/Chapter%2025/AABXTEN0.h...
physics.gac.edu/~chuck/PRENHALL/Chapter%2025/AABXTEN0.html
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Physlet Illustration: Production of an Electromagnetic Wave ... In this simulation, a single, positive electric charge oscillates up and down along the z direction. The electric field lines, radiating outward from the charge, are shown. How does this produce an electromagnetic wave?
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webphysics.davidson.edu/Applets/sync/ex_1.html
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