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Tidal forces in collapsing compact objects
Physical Review DIn this work, we investigate tidal forces in the Lemaitre-Tolman-Bondi (LTB) metric, focusing on both hidden and locally visible singularities. We discuss the strength of these singularities in terms of deformationally strong singularities. Specifically,
Ashok B Joshi +2 more
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American Journal of Physics, 1983
A tidal force pendulum is presented. Its period is calculated in three different ways: (a) by means of the spin equation, (b) using the Lagrangian formalism, and (c) by means of the equation for geodesic deviation. The period of the pendulum is independent of its length. It depends only upon the curvature of space-time at the position of the pendulum.
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A tidal force pendulum is presented. Its period is calculated in three different ways: (a) by means of the spin equation, (b) using the Lagrangian formalism, and (c) by means of the equation for geodesic deviation. The period of the pendulum is independent of its length. It depends only upon the curvature of space-time at the position of the pendulum.
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Geophysics, 1940
Abstract Observations of the tidal variation of gravity at Tulsa, Oklahoma, are presented for the period December 10 to December 16, 1939. A good correlation is found between observed and calculated values with the factor (1+h-3 k/2) = 1.2.
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Abstract Observations of the tidal variation of gravity at Tulsa, Oklahoma, are presented for the period December 10 to December 16, 1939. A good correlation is found between observed and calculated values with the factor (1+h-3 k/2) = 1.2.
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Tidal force from cosmic strings
Physical Review D, 1989We find the tidal force from the class of cosmic-string traveling waves of Vachaspati. The tidal force from a straight string vanishes. In contrast the tidal force from the curved strings treated here actually diverges as the string is approached. This tends to change the implications of a recent paper by Clarke, Ellis, and Vickers on the relation ...
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Performance of a compact end-tidal forcing system
Respiratory Physiology & Neurobiology, 2009The purpose of the present study was to develop and validate a new compact, portable end-tidal forcing (ETF) system capable of reliably controlling end-tidal gases. The system consists of compressed gas sources (air, N(2) and CO(2)) that are connected via three solenoid valves to a humidification chamber and an inspiratory reservoir bag from which the ...
Michael S, Koehle +4 more
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Relativistic Tidal Forces and the Possibility of Measuring Them.
Physical Review Letters, 1982The relativistic corrections to the Newtonian tidal accelerations generated by a rotating system are studied. The possibility of testing the relativistic theory of gravitation by measuring such effects in a laboratory in orbit around the Earth is considered.
Bahram Mashhoon, Dietmar S. Theiss
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On the tidal force of the Moon on the Earth
European Journal of Physics, 2005Here, first, the static formulation of tidal forces with completely spherical symmetry is reviewed (a differential calculus-based method is additionally introduced for readers with more familiarity with/interest in mathematical tools). Then, the result is generalized to the tidal force of the Moon acting on the Earth by considering the rotational ...
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Added mass and damping forces of a floating tidal turbine undergoing pendulum motion
Ocean Engineering, 2023Richard H J Willden, Mohamad H B Osman
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Satellite orbit perturbations induced by tidal forces
2005The restitution of the trajectory of near-Earth orbiting satellites with accuracies to some centimeters by evaluating precise tracking data, is essential in satellite geodesy for applications like station positioning, earth orientation parameter determination, altimetry, SAR interferometry, and gravity field recovery from observed satellite orbit ...
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