Null result for violation of the equivalence principle with free-fall rotating gyroscopes

Luo, Jun; Nie, Yonggang; Zhang, Y. Z.; Zhou, ZB

doi:10.1103/physrevd.65.042005

Cited by 33 publications

(29 citation statements)

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“…(15) and the particle's center of mass CM U in the gravitational field U is given by Eq. (16). This is the standard center of mass Eq.…”

Section: Local Acceleration Analytical Modelmentioning

confidence: 98%

Gravitational acceleration without mass and noninertia fields

Solomon¹

2011

Physics Essays

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Gravity modification as a portable nonmass effect is feasible. Contemporary experiments such as High-Frequency Gravitational Waves (HFGW) and Laser Interferometer Gravitational-Wave Observatory (LIGO) require mass to model gravitational acceleration and gravitational waves. A different approach to gravitational acceleration is presented here. This paper proposes that gravitational acceleration on any particle is the effect of the deformation of the shape and mass of the particle due to noninertia transformations present in that local region of the gravitational field. The analytical formulation and numerical integration has led to the discovery of a new formula for gravitational acceleration, g ¼ sc 2 , that is neither a function of the mass of the gravitational source nor a function of gravitational waves; where s is a function of the time dilation present in the local gravitational field. This formula has been tested and verified to be correct in the gravitational fields of the nine planetary bodies in our Solar System and the Sun: mechanical acceleration, and electromagnetic fields. Thus leading to the inference that g ¼ sc 2 is the generic formula for all non-nuclear force fields. The true power of this definition of gravitational acceleration lies in the fact that it now lends itself to a portable technology, as mass is no longer required to derive acceleration. This new relationship for acceleration describes how an electron moving in a magnetic field causes a force on the electron and explains why the electron velocity, magnetic field, and resulting force relationship is orthogonal. This electron model would be the basis for future propulsion technologies.Résumé: La modification de la gravité indépendamment de la masse est possible. Des expériences récentes telles que High-Frequency Gravitational Waves (HFGW) et Laser Interferometer Gravitational-Wave Observatory (LIGO) requièrent la connaissance de la masse pour modéliser l'accélération gravitationnelle et les ondes gravitationnelles. Une approche différente est présentée ici. Cet article suggère que l'accélération gravitationnelle d'une particule soit l'effet de l'altération de la forme et de la masse de la dite particule liée a des transformations non inertielles dans une région donnée du champ gravitationnel. La formulation analytique et l'intégration numérique ont conduit à la découverte d'une nouvelle formule pour l'accélération gravitationnelle, g ¼ sc 2 , qui n'est ni une fonction de la masse de la source gravitationnelle ni une fonction des ondes gravitationnelles; où s est une fonction de la dilatation du temps présente dans le champ gravitationnel local. Cette formule a été testée et vérifiée dans les champs gravitationnels des neuf planètes de notre système solaire, ainsi que dans celui du soleil en termes d'accélération mécanique et de champ électromagnétique. Ceci conduit à l'inférence que g ¼ sc 2 est la formule générique pour tous les champs de force d'origine non nucléaire. L'intérêt de cette formule de l'accélération gravitationnelle repo...

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“…(15) and the particle's center of mass CM U in the gravitational field U is given by Eq. (16). This is the standard center of mass Eq.…”

Section: Local Acceleration Analytical Modelmentioning

confidence: 98%

Gravitational acceleration without mass and noninertia fields

Solomon¹

2011

Physics Essays

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“…Such measurements were usually carried out with the purpose of experimental check of a equivalence principle, or various gravitoelectric (gravitomagnetic) models. In most cases, in these experiments the axis of a rotor was oriented vertically and, as a whole, the positive effect was absent (Luo et al, 2002). In paper (Dmitriev and Snegov, 2001) the results of exact weighing of two coaxial rotors with a horizontal axis and with the zero total moment  J are given, and its weights which have shown little change, dependent on angular speed of rotation of a rotor.…”

Section: Free Falling Of a Mechanical Rotor With A Horizontal Axismentioning

confidence: 99%

Dynamic Weighing Experiments—The Way to New Physics of Gravitation

Dmitriev¹,

Nikushchenko²,

Bulgakova³

2010

AIP Conference Proceedings

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Dynamic weighing is a measuring of size of the average gravity force acting on a test body which is in the state of accelerated movement. The acceleration of a body, or its microparticles, can be caused both by forces of gravitation, and by a direct, electromagnetic in nature, influence on the part of other bodies. It is just dynamic weighing of bodies which is informative in studying the features of electromagnetic and gravitational forces interaction. The report gives a brief review of results of experiments with weighing of accelerated moving bodies-in case of shock phenomena, in state of rotation, and in heating. Special attention is given to measurements of free fall accelerations of a mechanical rotor. In majority of the laboratory experiments executed with the purpose of checking the equivalence principle, the axis of a rotor was oriented verticallly. In our experiment we measured the free fall accelerations of the closed container inside which a mechanical rotor (gyroscope) with a horizontal axis of rotation was installed. There was observed an appreciable, essentially exceeding errors of measurements increase of acceleration of free falling of the container at angular speed of rotation of a rotor up to 20 000 rev/min. The physical conditions of free vertical falling of a body essentially differ from conditions of rotary (orbital) movement of a body in the field of gravity and the result obtained by us does not contradict the results of measurements of a gyroscope precession on satellites. Experiments with dynamic weighing of bodies give useful information on complex properties of the gravity force which are beyond the scope of well-known theories. Their careful analysis will allow to expand and supplement the concepts based on the general theory of relativity, and probably to open a way to new physics of gravitation and to new principles of movement.

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“…空落塔中进行自由下落, 真空度约为 5 × 10 −3 Pa. 陀螺的相对位置由激光干涉的方法来检测. 最终给出宏观旋转物体的检验精度在 η 12 ∼ 1.6 × 10 −7 水平 [69,70] .…”

Section: 针对这两个主要影响因素改进方法分别是unclassified

Some progress of the weak equivalence principle test

Zhu¹,

Liu²,

Zhao³

et al. 2016

Sci. Sin.-Phys. Mech. Astron.

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The Weak Equivalence Principle (WEP) together with Local Position Invariance (LPI) and Local Lorentz Invariance (LLI) forms the Einstein Equivalence Principle (EEP), which is one of the basic assumptions of Einstein's General Relativity. However, most of the theories trying to unify the gravitation with the quantum world, which is mostly described by the Standard Model, indicate some violation of the WEP. So the discovery of violation of the WEP would have a very important scientific significance. Testing the WEP with the highest possible precision is always a frontier issue in the world. This paper introduces almost all the ways of testing the WEP all over the world, including using the simple pendulum, torsion balance, free fall and lunar laser ranging. What's more, a lot of space missions have been proposed to test the WEP with a higher precision by many groups and institutions. The latest progress of these tests will also be described here.

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Null result for violation of the equivalence principle with free-fall rotating gyroscopes

Cited by 33 publications

References 50 publications

Gravitational acceleration without mass and noninertia fields

Gravitational acceleration without mass and noninertia fields

Dynamic Weighing Experiments—The Way to New Physics of Gravitation

Some progress of the weak equivalence principle test

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