Proceedings of the Royal Society of London A Mathematical and Physical Sciences · 1958 · 69 citations · 2 references
Natural SciencesPhysicsAstrophysicsOpticsPropagationElectromagnetic WavesFree-space PropagationInterferometryPhase VelocityWave Measurement InstrumentsWave MeasurementsInterferometer DesignInterferometric InstrumentationInterferometric MeasurementOptical InterferometersPhase Velocity EstimationSystematic Errors
Abstract The paper describes the determination of the free-space phase velocity of electromagnetic waves in vacuo by means of a millimetre-wave interferometer capable of high precision. As already provisionally announced (Froome 1958) the result is: co =299792.50±0.10 km/s, where the variation represents the standard deviation of a single determination in statistical combination with estimated systematic errors.
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Precision Determination of the Velocity of Electromagnetic Waves
K. D. Froome · Nature · 1958 · 14 citations · Full text