TY - JOUR
T1 - A new determination of the free-space velocity of electromagnetic waves
JF - Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
JO - Proc R Soc Lond A Math Phys Sci
SP - 109
LP - 122
M3 - 10.1098/rspa.1958.0172
VL - 247
IS - 1248
AU -
Y1 - 1958/09/09
UR - http://rspa.royalsocietypublishing.org/content/247/1248/109.abstract
N2 - 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.
ER -