Difference between revisions of "Electromagnetic wave"

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A transverse wave composed of an oscillating electrical field and a magnetic field that oscillates perpendicular to the electric field.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>
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[[File:Electromagneticwave3Dfromside.gif|thumb|right|An animation showing how an electromagnetic wave propagates]]An '''electromagnetic wave''' is a transverse wave composed of an oscillating electrical field and a magnetic field that oscillate perpendicular to the electric field.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>
  
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Electromagnetic waves was predicted by the classical laws of electricity and magnetism, known as Maxwell's equations:
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The spectrum of electromagnetic waves has an extremely wide range from radio waves, microwaves, terahertz radiation, infrared (IR) radiation, visible light, ultraviolet (UV) light, far UV radiation, soft X-rays, hard X-rays and <math>\gamma</math>-radiation.
  
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::<math>\nabla \cdot \mathbf{E} = 0  \qquad \qquad \qquad \ \ (1)</math>
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Electromagnetic waves are well described by the classical laws of electricity and magnetism, known as [[Maxwell's Equations]].
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::<math>\nabla \times \mathbf{E} = -\frac{\partial}{\partial t} \mathbf{B}  \qquad \qquad (2)</math>
 
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::<math>\nabla \cdot \mathbf{B} = 0 \qquad \qquad \qquad \ \ (3)</math>
 
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::<math>\nabla \times \mathbf{B} = \mu_0 \epsilon_0 \frac{\partial}{\partial t} \mathbf{E}  \qquad \ \ \ (4)</math>
 
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:where <math>\nabla</math> is a vector differential operator
 
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Maxwell's equations is an example of a system of [[partial differential equations]].
 
  
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[[Category:Physics]]
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== References ==
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<references />
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[[Category:Electromagnetism]]
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[[Category:Electrical Engineering]]
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[[Category:Amateur Radio]]

Latest revision as of 14:19, April 6, 2017

An animation showing how an electromagnetic wave propagates

An electromagnetic wave is a transverse wave composed of an oscillating electrical field and a magnetic field that oscillate perpendicular to the electric field.[1]

The spectrum of electromagnetic waves has an extremely wide range from radio waves, microwaves, terahertz radiation, infrared (IR) radiation, visible light, ultraviolet (UV) light, far UV radiation, soft X-rays, hard X-rays and <math>\gamma</math>-radiation.

Electromagnetic waves are well described by the classical laws of electricity and magnetism, known as Maxwell's Equations.

References

  1. ↑ Wile, Dr. Jay L. Exploring Creation With Physical Science. Apologia Educational Ministries, Inc. 1999, 2000
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