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![Electromagnetic radiation - Wikipedia, the free encyclopedia]()
en.wikipedia.orgMaxwell's equations established that some charges and currents ("sources") produce a local type of electromagnetic field near them that does not have the behavior of EMR. Currents directly produce a magnetic field, but it is of a magnetic dipole type that瀏覽：444 -
![Electromagnetic spectrum - Wikipedia, the free encyclopedia]()
en.wikipedia.orgThe electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation.[4] The "electromagnetic spectrum" of an object has a different meaning, and is instead the characteristic distribution of electromagnetic radiation emitted瀏覽：1410
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日期：2024-07-16
electromagnetic radiation, 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 wa...
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日期：2024-07-13
We are not exploiting people's fears but simply suggesting that given the accepted uncertainty about the safety (or otherwise) of electromagnetic radiation that perhaps it is prudent to err on the side of caution," said Neil Bullock of MummyWraps....
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日期：2024-07-11
The radiation of energy as transverse waves that is produced by moving charges. A charge can radiate electromagnetic radiation only if it is undergoing accelerated motion. There is one exception: a charge moving at a constant velocity through a dielectric...
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日期：2024-07-15
What is electromagnetic radiation? Electromagnetic energy is a term used to describe all the different kinds of energies released into space by stars such as the Sun. These kinds of energies include some that you will recognize and some that will sound st...
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日期：2024-07-12
Note: It would be quite wrong to pretend that I am comfortable with this. Having spent quite a lot of time looking at web pages which try to explain electromagnetic radiation (or even water waves), do I feel that I really understand it? To be honest - no!...
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日期：2024-07-12
Electromagnetic Radiation: Electromagnetic radiation is energy that is propagated through free space or through a material medium in the form of electromagnetic waves, such as radio waves, visible light, and gamma rays. The term also refers to the emissio...
electromagnetic radiation Facts, information, pictures | Encyclopedia.com articles about electromagn
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日期：2024-07-11
Get information, facts, and pictures about electromagnetic radiation at Encyclopedia.com. Make research projects and school reports about electromagnetic radiation easy with credible articles from our FREE, online encyclopedia and dictionary....
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