Research

Probing the speed of light with radio waves at extremely low frequencies


Reference:

Füllekrug, M., 2004. Probing the speed of light with radio waves at extremely low frequencies. Physical Review Letters, 93 (4), 043901.

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Official URL:

http://link.aps.org/doi/10.1103/PhysRevLett.93.043901

Abstract

The speed of light, a fundamental physical constant and thought to be independent of frequency, is tested here with naturally occurring radio waves in the atmosphere at extremely low frequencies. It is shown that the speed of light in the frequency range 5-50 Hz is known with an accuracy determined by perturbations of the ionospheric reflection height associated with space weather phenomena, which place an upper limit on the photon rest mass m(gamma)less than or similar to4x10(-52) kg to date.

Details

Item Type Articles
CreatorsFüllekrug, M.
DOI10.1103/PhysRevLett.93.043901
DepartmentsFaculty of Engineering & Design > Electronic & Electrical Engineering
RefereedYes
StatusPublished
ID Code5967
Additional InformationID number: ISI:000222856400027

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