Physics of Light and Color – Speed of Light

The maximum speed of light (and all other forms of electromagnetic radiation), which scientists have now thoroughly examined,  is expressed as a constant value denoted in equations by the symbol c. Scientists made numerous measurements over two centuries and finally determined that the correct value for the speed of light is 299,774 kilometers per second.  The figure shows the change in published light speed measurements over the past 200 years.


Sourced through Scoop.it from: micro.magnet.fsu.edu

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