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  2. 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.

  3. Criticism of the theory of relativity - Wikipedia

    en.wikipedia.org/wiki/Criticism_of_the_theory_of...

    On the other hand, the theory makes natural laws invariant—examples are the constancy of the speed of light, or the covariance of Maxwell's equations. Consequently, Felix Klein (1910) called it the "invariant theory of the Lorentz group" instead of relativity theory, and Einstein (who reportedly used expressions like "absolute theory ...

  4. 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 ...

  5. 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.

  6. Adds resin to the known list of "electrics". 1675 – Isaac Newton delivers his theory of light; 1676 – Ole Rømer proves that speed of light is finite, by observing Jupiter's moons; 1678 – Christiaan Huygens states his principle of wavefront sources and demonstrates the refraction and diffraction of light rays.

  7. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    In such a theory, its speed would depend on its frequency, and the invariant speed c of special relativity would then be the upper limit of the speed of light in vacuum. [32] No variation of the speed of light with frequency has been observed in rigorous testing, putting stringent limits on the mass of the photon. [59]

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  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 .