Generalized Sagnac Effect

Wang, Ruyong; Zheng, Yi; Yao, Aiping

doi:10.1103/physrevlett.93.143901

Cited by 87 publications

(109 citation statements)

References 7 publications

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“…The accuracy of this experiment by Sagnac has been improved by several orders of magnitude by Macek and Davis 22 and others. Wang et al 23,24 recently developed a translational version of the Sagnac experiment that also yields positive results. This work by Wang et al is reinforced by the GPS light speed measurement discussed in this paper since this latter test, because of the short distances involving open paths, is effectively translational and proves that the Sagnac effect applies to translational as well as rotational motion.…”

Section: Discussionmentioning

confidence: 94%

One-way light speed measurement using the synchronized clocks of the global positioning system (GPS)

Gift¹

2010

Physics Essays

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The one-way speed of light is determined by timing a light signal transmission using the synchronized clocks of the global positioning system. The measurement is based on the clock synchronization procedure established by the CCIR that has been rigorously and extensively tested and verified. The result is a simple method for light speed determination that reveals one-way light speed anisotropy depending on the direction of propagation relative to the rotating Earth.Résumé: La vitesse de la lumière unidirectionnelle est définie en mesurant la transmission d'un signal lumineux en utilisant les horloges synchronisées du système de localisation GPS. La mesure est basée sur la procédure de synchronisation par rapport à l'horloge définie par le CCIR qui a été rigoureusement et largement testée et vérifiée. Le résultat est une méthode simple pour définir la vitesse de la lumière qui révèle une anisotropie de la vitesse de la lumière unidirectionnelle dépendant de la direction de la propagation par rapport à la rotation de la Terre.

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Section: Discussionmentioning

confidence: 94%

One-way light speed measurement using the synchronized clocks of the global positioning system (GPS)

Gift¹

2010

Physics Essays

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“…Here a question may arise: can we determine the definite and unique synchronization gauge (should such exist) for a given inertial frame? Very recently, Wang et al suggested a new and excellent scheme to test the anisotropy of the speed of light by using the technique of phase-conjugate interferometer (phase-conjugate Sagnac experiment) [15][16][17]. In other words, we think such a scenario could detect the Edwards parameters.…”

Section: Discussionmentioning

confidence: 99%

Generalized Edwards Transformation and Principle of Permutation Invariance

Shen

2007

Int J Theor Phys

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The relativity of simultaneity is generalized by using the concept of synchronization gauge. The Lorentz transformation is derived without the postulate of the universal limiting speed, and a generalized Edwards transformation is obtained by using the principle of permutation invariance (covariance). It is shown that the existences of the one-way universal limiting speed (in the Lorentz transformation) and the constancy of the two-way average speed of light (in the Edwards transformation) are the necessary consequences of the principle of permutation invariance that is consistent with the postulate of relativity. The connection between the Edward transformation and the general coordinate transformation is discussed, and based on this, we find that the physical meaning of the Edwards parameter, which indicates anisotropy of the speed of light, is a gravitomagnetic potential of the spacetime.

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“…It had usually been recognized to occur in circular motion which accompanies acceleration, before observed in the experiments [1,2] that involve uniform linear motion as well. The Sagnac effect may be still a conundrum to the theory of relativity which is based on the constancy of the speed of light.…”

Section: Introductionmentioning

confidence: 99%

Theoretical analysis of generalized Sagnac effect in the standard synchronization

Choi

2017

Can. J. Phys.

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Abstract:The Sagnac effect has been shown in inertial frames as well as rotating frames. We solve the problem of the generalized Sagnac effect in the standard synchronization of clocks. The speed of a light beam that traverses an optical fiber loop is measured with respect to the proper time of the light detector, and is shown to be other than the constant c, though it appears to be c if measured by the time standard-synchronized. The fiber loop, which can have an arbitrary shape, is described by an infinite number of straight lines such that it can be handled by the general framework of Mansouri and Sexl (MS). For a complete analysis of the Sagnac effect, the motion of the laboratory should be taken into account. The MS framework is introduced to deal with its motion relative to a preferred reference frame. Though the one-way speed of light is other than c, its two-way speed is shown to be c with respect to the proper time. The theoretical analysis of the generalized Sagnac effect corresponds to the experimental results, and shows the usefulness of the standard synchronization. The introduction of the standard synchrony can make mathematical manipulation easy and can allow us to deal with relative motions between inertial frames without information on their velocities relative to the preferred frame.

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Generalized Sagnac Effect

Cited by 87 publications

References 7 publications

One-way light speed measurement using the synchronized clocks of the global positioning system (GPS)

One-way light speed measurement using the synchronized clocks of the global positioning system (GPS)

Generalized Edwards Transformation and Principle of Permutation Invariance

Theoretical analysis of generalized Sagnac effect in the standard synchronization

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