In the Fizeau experiment on measurement of the velocity of light the distance between the gear w...

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In the Fizeau experiment on measurement of the velocity of light the distance between the gear wheel and the mirror is \( l=7.0 \mathrm{~km} \), the number of teeth is \( z=720 \). Two successive disappearances of light are observed at the following rotation velocities of the wheel; \( n_{1}=283 \mathrm{rps} \) and \( r_{2}=313 \mathrm{rps} \). Find the velocity of light.
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