What is the Speed of Light?
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Value of the speed of light
c ~=~ 299 \, 792 \, 458 \, \frac{ \mathrm{m} }{ \mathrm{s} }
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Definition of one meter
3\cdot 10^8 \, \frac{\mathrm m}{\mathrm s} ~\cdot~ 3.333 \cdot 10^{-9} \, \mathrm{s} ~&\approx~ 1\, \mathrm{m}
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