Measurement of free-fall acceleration in a stationary gravitational field

1977 ◽  
Vol 20 (4) ◽  
pp. 421-424
Author(s):  
V. V. Gonyaev
Keyword(s):  
Gravitational Field ◽  
Free Fall ◽  
Free Fall Acceleration ◽  
Stationary Gravitational Field

scholarly journals Quantum Vacuum Energy and the Emergence of Gravity An Essay

2018 ◽  
Vol 10 (2) ◽  
pp. 1
Author(s):  
Philip J. Tattersall
Keyword(s):  
Gravitational Field ◽  
Vacuum Energy ◽  
Free Fall ◽  
Energy Coupling ◽  
Quantum Vacuum ◽  
Free Fall Acceleration ◽  
Energy Gradient

Building on the work of others a novel idea is put forward regarding the possible mechanism of gravity as involving energy coupling down the energy gradient of a massive body. Free fall (acceleration) in a gravitational field is explained as arising from an interaction of the modified quantum vacuum energy in the vicinity of matter.

State special primary acceleration measurement standard for gravimetry GET 190-2019

2020 ◽  
pp. 3-8
Author(s):  
L.F. Vitushkin ◽  
F.F. Karpeshin ◽  
E.P. Krivtsov ◽  
P.P. Krolitsky ◽  
V.V. Nalivaev ◽  
...  
Keyword(s):  
High Precision ◽  
Free Fall ◽  
Measurement Range ◽  
Measurement Standard ◽  
Acceleration Measurement ◽  
Measurement Systems ◽  
Free Fall Acceleration ◽  
Investigation Methods ◽  
Measurement Results ◽  
Upper Level

The State special primary acceleration measurement standard for gravimetry (GET 190-2019), its composition, principle of operation and basic metrological characteristics are presented. This standard is on the upper level of reference for free-fall acceleration measurements. Its accuracy and reliability were improved as a result of optimisation of the adjustment procedures for measurement systems and its integration within the upgraded systems, units and modern hardware components. A special attention was given to adjusting the corrections applied to measurement results with respect to procedural, physical and technical limitations. The used investigation methods made it possibled to confirm the measurement range of GET 190-2019 and to determine the contributions of main sources of errors and the total value of these errors. The measurement characteristics and GET 90-2019 were confirmed by the results obtained from measurements of the absolute value of the free fall acceleration at the gravimetrical site “Lomonosov-1” and by their collation with the data of different dates obtained from measurements by high-precision foreign and domestic gravimeters. Topicality of such measurements ensues from the requirements to handle the applied problems that need data on parameters of the Earth gravitational field, to be adequately faced. Geophysics and navigation are the main fields of application for high-precision measurements in this field.

scholarly journals Interesting Examples of Violation of the Classical Equivalence Principle but Not of the Weak One

2018 ◽  
Vol 2018 ◽  
pp. 1-13
Author(s):  
Antonio Accioly ◽  
Wallace Herdy
Keyword(s):  
Wave Function ◽  
Quantum Mechanics ◽  
Gravitational Field ◽  
Experimental Test ◽  
Equivalence Principle ◽  
Free Fall ◽  
Higher Order ◽  
Tree Level ◽  
Quantum Particles ◽  
Bohr Atom

The equivalence principle (EP) and Schiff’s conjecture are discussed en passant, and the connection between the EP and quantum mechanics is then briefly analyzed. Two semiclassical violations of the classical equivalence principle (CEP) but not of the weak one (WEP), i.e., Greenberger gravitational Bohr atom and the tree-level scattering of different quantum particles by an external weak higher-order gravitational field, are thoroughly investigated afterwards. Next, two quantum examples of systems that agree with the WEP but not with the CEP, namely, COW experiment and free fall in a constant gravitational field of a massive object described by its wave-function Ψ, are discussed in detail. Keeping in mind that, among the four examples focused on in this work only COW experiment is based on an experimental test, some important details related to it are presented as well.

scholarly journals ELECTROMAGNETIC EFFECTS IN SUPERCONDUCTORS IN STATIONARY GRAVITATIONAL FIELD

2005 ◽  
Vol 14 (05) ◽  
pp. 837-847 ◽  
Author(s):  
B. J. AHMEDOV ◽  
V. G. KAGRAMANOVA
Keyword(s):  
Gravitational Field ◽  
Magnetic Flux ◽  
Superconducting Devices ◽  
Resistive State ◽  
Superconducting Cylinder ◽  
Inertial Frames ◽  
Radial Heat ◽  
General Relativistic ◽  
Shift Effect ◽  
Stationary Gravitational Field

The general relativistic modifications to the resistive state in superconductors of second type in the presence of a stationary gravitational field are studied. Some superconducting devices that can measure the gravitational field by its red-shift effect on the frequency of radiation are suggested. It has been shown that by varying the orientation of a superconductor with respect to the earth gravitational field, a corresponding varying contribution to AC Josephson frequency would be added by gravity. A magnetic flux (being proportional to angular velocity of rotation Ω) through a rotating hollow superconducting cylinder with the radial gradient of temperature ∇rT is theoretically predicted. The magnetic flux is assumed to be produced by the azimuthal current arising from Coriolis force effect on radial thermoelectric current. Finally the magnetic flux through the superconducting ring with radial heat flow located at the equatorial plane interior of the rotating neutron star is calculated. In particular it has been shown that nonvanishing magnetic flux will be generated due to the general relativistic effect of dragging of inertial frames on the thermoelectric current.

Constraints on gravitational properties of antimatter from cyclotron-frequency measurements

2014 ◽  
Vol 30 ◽  
pp. 1460260
Author(s):  
Michael H. Holzscheiter
Keyword(s):  
Gravitational Field ◽  
Gravitational Force ◽  
Normal Gravity ◽  
Free Fall ◽  
Gravitational Acceleration ◽  
Technical Problems ◽  
Weak Equivalence Principle ◽  
Normal Matter ◽  
Gravitational Experiment ◽  
Fall Experiment

A fundamental question in physics that has yet to be addressed experimentally is whether particles of antimatter, such as the antiproton or positron, obey the weak equivalence principle (WEP). Several theoretical arguments have been put forward arguing limits for possible violations of WEP. No direct `classical' gravitational experiment, the measurement of the free fall of an antiparticle, has been performed to date to determine if a particle of antimatter would experience a force in the gravitational potential of a normal matter body that is different from normal gravity. 30 years ago we proposed a free fall experiment using protons and antiprotons, modeled after the experiment to measure the gravitational acceleration of a free electron. At that time we gave consideration to yet another possible observation of gravitational differences between matter and antimatter based on the gravitational red shift of clocks. I will recall the original arguments and make a number of comments pertaining to the technical problems and other issues that prevented the execution of the antiproton free fall measurement. Note that a different gravitational force on antimatter in the gravitational field of matter would not constitute a violation of CPT, as this is only concerned with the gravitational acceleration of antimatter in the gravitational field of an antimatter body.

Measurements of free-fall acceleration in the gravimetric micronetwork of the Bureau International des Poids et Mesures, Sèvres by FG5-108 absolute ballistic gravimeter

1997 ◽  
Vol 40 (3) ◽  
pp. 294-297
Author(s):  
L. F. Vitushkin ◽  
A. L. Vitushkin ◽  
L. Robertsson ◽  
J. -M. Chartier
Keyword(s):  
Free Fall ◽  
Free Fall Acceleration

Going nuts: Measuring free-fall acceleration by analyzing the sound of falling metal pieces

2016 ◽  
Vol 54 (3) ◽  
pp. 182-183
Author(s):  
Jochen Kuhn ◽  
Patrik Vogt ◽  
Florian Theilmann
Keyword(s):  
Free Fall ◽  
Free Fall Acceleration

scholarly journals Generalized Van der Waals Equation for Liquid-Vapor Equilibria in a Stationary Gravitational Field

2021 ◽  
Vol 11 (01) ◽  
pp. 1-11
Author(s):  
Makokiyu Godlove Akumbom ◽  
Georges Collince Fouokeng ◽  
Martin Tchoffo ◽  
Lukong Cornelius Fai
Keyword(s):  
Gravitational Field ◽  
Van Der Waals ◽  
Van Der Waals Equation ◽  
Stationary Gravitational Field ◽  
Liquid Vapor
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