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  2. Faster-than-light - Wikipedia

    en.wikipedia.org/wiki/Faster-than-light

    Faster-than-light (superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed of light (c). The special theory of relativity implies that only particles with zero rest mass (i.e., photons) may travel at the speed of light, and that nothing may travel faster.

  3. 2011 OPERA faster-than-light neutrino anomaly - Wikipedia

    en.wikipedia.org/wiki/2011_OPERA_faster-than...

    In March 2012, the co-located ICARUS experiment refuted the OPERA results by measuring neutrino velocity to be that of light. [22] ICARUS measured speed for seven neutrinos in the same short-pulse beam OPERA had checked in November 2011, and found them, on average, traveling at the speed of light.

  4. Modern searches for Lorentz violation - Wikipedia

    en.wikipedia.org/wiki/Modern_searches_for...

    Measurements on light from gamma-ray bursts show that the speed of light does not vary with energy. Modern searches for Lorentz violation are scientific studies that look for deviations from Lorentz invariance or symmetry, a set of fundamental frameworks that underpin modern science and fundamental physics in particular.

  5. Timeline of special relativity and the speed of light - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_special...

    The measurements of speed of light are also mentioned only to the minimum extent, i.e. when they proved for the first time that c is finite and invariant. Innovations like the use of Foucault's rotating mirror or the Fizeau wheel are not listed here – see the article about speed of light. This timeline also ignores, for reasons of volume and ...

  6. Scientists challenge Einstein's theory on speed of light - AOL

    www.aol.com/news/2016-11-28-scientists-challenge...

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  7. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    The speed of light in vacuum, commonly denoted c, is a universal physical constant that is exactly equal to 299,792,458 metres per second (approximately 300,000 kilometres per second; 186,000 miles per second; 671 million miles per hour).

  8. Relativity priority dispute - Wikipedia

    en.wikipedia.org/wiki/Relativity_priority_dispute

    To fill this gap, I introduced the principle of the constancy of the velocity of light, which I borrowed from H. A. Lorentz's theory of the stationary luminiferous ether, and which, like the principle of relativity, contains a physical assumption that seemed to be justified only by the relevant experiments (experiments by Fizeau, Rowland, etc ...

  9. Variable speed of light - Wikipedia

    en.wikipedia.org/wiki/Variable_speed_of_light

    Robert Dicke, in 1957, developed a VSL theory of gravity, a theory in which (unlike general relativity) the speed of light measured locally by a free-falling observer could vary. [7] Dicke assumed that both frequencies and wavelengths could vary, which since c = ν λ {\displaystyle c=\nu \lambda } resulted in a relative change of c .

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