Question:

What is light speed?

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  1. 299 792 642 meters/second in a vacuum. That speed divided by the refraction index of whatever material it's passing through if it's passing through a material.




  2. C = 3 x 10^8 m/s

  3. It's the amount of time it takes for light to travel.

  4. 2.998 x 10^8 m/s in vacuum
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