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| ⚫ | '''Light''' is a form of [[electromagnetism|electromagnetic radiation]] that can be quantified and [[measurement|measured]] as an effect of [[photon]] [[particles]]. The speed at which light travels in a complete vacuum is approximately 2.9979 X 10<sup>8</sup> [[meter]]s per [[second]]. The speed of light is usually represented by the variable ''c''. |
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* {{wikipedia}} |
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Revision as of 15:16, 24 July 2016
Light is a form of electromagnetic radiation that can be quantified and measured as an effect of photon particles. The speed at which light travels in a complete vacuum is approximately 2.9979 X 108 meters per second. The speed of light is usually represented by the variable c.
