-
Galileo
Method: Laterns, Speed: "fast" -
Romer/Huygens
Method: Jovian moon occultation, Speed: 215,000 km/s -
Bradley
Method: Aberration of Light, Speed: 301,000 km/s -
Fizeau
Method: Spinning slotted wheel, Speed: 315,300 km/s -
Michelson
Method: Rorating mirror, Speed: 299,910 km/s -
Rosa
Method: Capacities method, Speed: 300,000 km/s -
Comstock
Method: 18 star pairs, Speed: 300,560 km/s -
Perot/Fabry
Method: Electrometric method, Speed: 299,730 km/s -
Rosa/Dorsey
Method: Electrical method, Speed: 299,803 km/s -
Mercier
Method: Electrical measurements, Speed: 299,700 km/s -
Michelson/Birge
Method: Interferometer, Speed: 299,798 km/s -
Karolus/Mittelstaedt
Method: Kerr Cell shutter, Speed: 299,778 km/s -
Pease/Pearson
Method: Interferometer, Speed: 299,774 km/s -
Essen/Gordon-Smith
Method: Microwave cavity, Speed: 299,792 km/s -
Froome
Method: Interferometer, Speed: 299,792.50 km/s -
Evenson
Method: Laser method, Speed: 299,792.467 km/s -
Woods/Shotton/Rowley
Method: Laser method, Speed: 299,792.4588 km/s -
International
Method: Definition, Speed: 299,792.458 km/s