16 Facts About Electromagnetic radiation


Electromagnetic radiation waves are emitted by electrically charged particles undergoing acceleration, and these waves can subsequently interact with other charged particles, exerting force on them.

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Electromagnetic radiation is associated with those EM waves that are free to propagate themselves without the continuing influence of the moving charges that produced them, because they have achieved sufficient distance from those charges.

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Electromagnetic radiation realized that light is a combination of electricity and magnetism and thus that the two must be tied together.

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Wave characteristics are more apparent when EM Electromagnetic radiation is measured over relatively large timescales and over large distances while particle characteristics are more evident when measuring small timescales and distances.

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For example, when electromagnetic radiation is absorbed by matter, particle-like properties will be more obvious when the average number of photons in the cube of the relevant wavelength is much smaller than 1.

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In homogeneous, isotropic media, electromagnetic radiation is a transverse wave, meaning that its oscillations are perpendicular to the direction of energy transfer and travel.

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However, in the far-field EM Electromagnetic radiation which is described by the two source-free Maxwell curl operator equations, a more correct description is that a time-change in one type of field is proportional to a space-change in the other.

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At the quantum level, electromagnetic radiation is produced when the wavepacket of a charged particle oscillates or otherwise accelerates.

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The discovery of infrared Electromagnetic radiation is ascribed to astronomer William Herschel, who published his results in 1800 before the Royal Society of London.

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The origin of the ray differentiates them, gamma rays tend to be natural phenomena originating from the unstable nucleus of an atom and X-rays are electrically generated unless they are as a result of bremsstrahlung X-Electromagnetic radiation caused by the interaction of fast moving particles colliding with certain materials, usually of higher atomic numbers.

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EM Electromagnetic radiation is classified by wavelength into radio, microwave, infrared, visible, ultraviolet, X-rays and gamma rays.

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Random electromagnetic radiation requiring this kind of analysis is, for example, encountered in the interior of stars, and in certain other very wideband forms of radiation such as the Zero point wave field of the electromagnetic vacuum.

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Electromagnetic-type ionizing radiation extends from the extreme ultraviolet to all higher frequencies and shorter wavelengths, which means that all X-rays and gamma rays qualify.

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Ionizing Electromagnetic radiation creates high-speed electrons in a material and breaks chemical bonds, but after these electrons collide many times with other atoms eventually most of the energy becomes thermal energy all in a tiny fraction of a second.

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The effects of electromagnetic radiation upon living cells, including those in humans, depends upon the radiation's power and frequency.

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Electromagnetic radiation waves are predicted by the classical laws of electricity and magnetism, known as Maxwell's equations.

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