Volume 23: Pages 405-412, 2010
The velocity of electromagnetic wave is observed differently depending on the observer’s velocity
Masanori Sato 1
1Honda Electronics Co., Ltd., 20 Oyamazuka, Oiwa-cho Toyohashi, Aichi 441-3193, Japan
The Sagnac effect in global positioning system data provides experimental evidence that the group velocity is observed differently due to the velocity of the observer. The group velocity of the electromagnetic wave cG is observed differently depending on the observer’s velocity v, as cG=c±v (c is the speed of light; + indicates that c and v are in the opposite direction).
Keywords: The Theory of Relativity, The Global Positioning System (GPS), Sagnac Effect, The Earth-Centered Locally Inertial (ECI) Coordinate System, Selleri’s Arguments
Received: November 5, 2009; Accepted: May 22, 2010; Published Online: June 28, 2010