نتایج جستجو برای: gravitation concentration

تعداد نتایج: 384095  

1999
ULRICH H. GERLACH

Does there exist a purely quantum mechanical carrier of the imprints of gravitation? The motivation for considering this question arises from the following historical scenario: Suppose a time traveller from today visited Einstein in 1907, when he had the “happiest thought of his life”, just in time before Einstein actually started on the path which led towards his formulation of gravitation (ge...

Journal: :Clinical biomechanics 1991
L G Lemmers M M Sanders J C Cool H J Grootenboer

To explain the cause of axial rotation in a scoliotic vertebral column, the influence of the gravitation force on a spine with a C-scoliosis has been investigated by means of a mechanical model. In this model the gravitation force takes hold of the three-dimensionally curved vertebral column eccentrically. From these reflections it appears that the axial rotation in the scoliotic spine can be e...

2008
Stefan Friedrich

The Vlasov-Nordström system serves for the description of galaxies and globular clusters under the influence of gravitation. If one neglects collisions between particles and uses the Nordström scalar theory of gravitation coupled to the Vlasov equation, one arrives at the so called Vlasov-Nordström system, which is more complicated than the non-relativistic Vlasov-Poisson system based on Newton...

Journal: :Journal of Mathematical Physics 2022

Consider hard balls in a bounded rotating drum. If there is no gravitation then Fermi acceleration, i.e., the energy of remains forever. gravitation, acceleration may arise. A number explicit formulas for system without are given. Some these based on an realization, which we derive, well-known microcanonical ensemble measure.

2010
Ryotaro Wake Takuya Misugi Kenei Shimada Minoru Yoshiyama

The purpose of this study was to examine the influence of the gravitation of the Moon on the frequency of births in Kyoto, Japan. A retrospective cohort analysis of 1007 consecutive births without the use of the induction agents was conducted on a population of births in a private midwife hospital from January, 1966 to December, 2000. There was a significant increase in the cases of births, whe...

2012
Sergio A Hojman Felipe A Asenjo Adolfo Ibáñez

The Lagrangian equations of motion for massive spinning test particles (tops) moving on a gravitational background using general relativity are presented. The paths followed by tops are nongeodesic. An exact solution for the motion of tops on a Schwarzschild background which allows for superluminal propagation of tops is studied. It is shown that the solution becomes relevant for particles with...

1997
Thibault DAMOUR

The confrontation between Einstein’s gravitation theory and experimental results, notably binary pulsar data, is summarized and its significance discussed. Experiment and theory agree at the 10 level. All the basic structures of Einstein’s theory (coupling of gravity to matter; propagation and self-interaction of the gravitational field, including in strong-field conditions) have been verified....

1997
Pawel O. Mazur

We show that a gravitating mass M in thermal equilibrium behaves statistically like a system of some number N of harmonic oscillators whose zero-point energy ǫ 2 depends on N universally in such a way that Nǫ2 ∼ hc G , where G is the Newton constant, c is the velocity of light in vacuum, and h is the Planck constant. The large number N is also the number of weakly interacting gravitational atom...

2009
Kirill A. Bronnikov Sergey V. Sushkov

a Center of Gravitation and Fundamental Metrology, VNIIMS, Ozyornaya St. 46, Moscow 117361, Russia; Institute of Gravitation and Cosmology, PFUR, Miklukho-Maklaya St. 6, Moscow 117198, Russia b Department of Theoretical Physics, Ulyanovsk State University, Leo Tolstoy St. 42, 432000 Ulyanovsk, Russia; Department of General Physics, Ulyanovsk State Pedagogical University, Lenin’s 100 years Sq., ...

2008
Chryssomalis Chryssomalakos Daniel Sudarsky

The issue of whether some manifestations of gravitation in the quantum domain, are indicative or not of a non-geometrical aspect in gravitation is discussed. We examine some examples that have been considered in this context, providing a critical analysis of previous interpretations. The analysis of these examples is illustrative about certain details in the interpretation of quantum mechanics....

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