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Galileo
He used the lanterns as a method, and he determined that light was "fast". -
Period: to
Time
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Romer/Huygens
Their method was Jovian moon occultation, the speed was 215,000 km/s -
Bradley
his method was the aberration of light, and the speed he recorded was 301,000 km/s. -
Fizeau
his method was spinning slotted wheel, and he record the speed of 315,300 km/s -
Michelson
he used a rotating mirror , and he recored a 299,910 km/s speed. -
Rosa
he used the capacities method, and he recorded 300,000 km/s. -
Comstock
He used 18 star pairs, and he recored the speed of 300,560 km/s. -
Perot/Fabry
they used the eloctrometric mehod, and recorded the speed of 299, 730 km/s. -
Rosa/Dorsey
they used electrical measurements and recorded 299,803 km/s. -
Mercier
he used electrical measurements and recorded 299,700 km/s. -
Michelson/Birge
they used an interferometer and recorded 299,798 km/s. -
Karolus/Mittelstaedt
they used a kerr cell shutter and recorded 299,778 km/s. -
Pease/Pearson
they used an interferometer and recorded 299,774 km/s. -
Essen/Gordon-Smith
they used a microwave cavity and recorded 299,792 km/s -
Froome
he used an interferometer and recorded 299,792.50 km/s. -
Evenson
he used a laser method anr he recorded a speed of 299,792.467 km/s. -
Woods/Shotton/Rowley
ther used the laser method andr recorded a speed of 299,792.4588 km/s. -
International
they defined the speed of light in the speed of 299,792.458 km/s.