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Bibliografías temáticas / Newtonian gravitational constant

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Artículos de revistas

Literatura académica sobre el tema "Newtonian gravitational constant"

Autor: Grafiati

Publicado: 10 de marzo de 2023

Última modificación: 11 de marzo de 2023

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Artículos de revistas sobre el tema "Newtonian gravitational constant"

1

UV, Satya Seshavatharam, and Lakshminarayana S. "Final unification with three gravitational constants associated with nuclear, electromagnetic and gravitational interactions." International Journal of Advanced Astronomy 4, no. 2 (2016): 105. http://dx.doi.org/10.14419/ijaa.v4i2.6799.

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By introducing two large pseudo gravitational constants assumed to be associated with strong and electromagnetic interactions, we make an attempt to combine the old Abdus Salam’s ‘strong gravity’ concept with ‘Newtonian gravity’ and try to understand the constructional features of nuclei, atoms and neutron stars in a unified approach. From the known elementary atomic and nuclear physical constants, estimated magnitude of the Newtonian gravitational constant is (6.66 to 6.70) x10-11 m3/kg/sec2. Finally, by eliminating the proposed two pseudo gravitational constants, we inter-related the Newtonian gravitational constant, Fermi’s weak coupling constant and Strong coupling constant, in a generalized approach.

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2

UV, Satya Seshavatharam, and Lakshminarayana S. "To fit Fermi’s weak coupling constant with three gravitational constants." International Journal of Physical Research 6, no. 1 (2017): 8. http://dx.doi.org/10.14419/ijpr.v6i1.8781.

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By considering three virtual gravitational constants assumed to be associated with gravitational, electromagnetic and strong interactions, Fermi’s weak coupling constant can be shown to be a natural manifestation of microscopic quantum gravity. As our approach is heuristic and completely different from the current methods of estimating the Newtonian gravitational constant, concerning the call of ‘Ideas lab 2016’ organized by NSF, we appeal for inclusion of this theoretical work as a project under the unification scheme. Estimated magnitudes of Fermi’s weak coupling constant and Newtonian gravitational constant are 1.44021X10(-62) J.m3 and 6.679856X10(-11) m3/kg/sec2 respectively.

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3

Ognean, Teodor. "Some considerations on the Newtonian gravitational constant G measurements." Physics Essays 32, no. 3 (2019): 292–97. http://dx.doi.org/10.4006/0836-1398-32.3.292.

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Certain relationships between the Newtonian gravitational constant, the Planck constant, and the square of the fine structure constant, established by dimensional analysis, are presented. Here we show that, based on these relationships, a more exact value for the Newtonian gravitational constant G equal to 6.67409076 × 10−11 m3 kg−1 s−2 can be calculated. In this way, these relationships could be used as a nonconventional tool for establishing a G gravitational constant value very close to the real one. It is considered that the difference between this calculated value and the values provided by the most accurate measurements of this constant is very important, whereas such difference could reflect certain, subtle and unknown “links” existing between the natural phenomena. This article also highlights a very interesting relationship between the Newtonian gravitational constant G, the square of the fine structure constant (α−1)2, and the Planck constant h, having the following form: 2XG = π (10Xα/2Xh)2, where XG, 10Xα, and Xh are the normalized values (dimensionless) of these constants.

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4

Xue, Chao, Jian-Ping Liu, Qing Li, et al. "Precision measurement of the Newtonian gravitational constant." National Science Review 7, no. 12 (2020): 1803–17. http://dx.doi.org/10.1093/nsr/nwaa165.

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Abstract The Newtonian gravitational constant G, which is one of the most important fundamental physical constants in nature, plays a significant role in the fields of theoretical physics, geophysics, astrophysics and astronomy. Although G was the first physical constant to be introduced in the history of science, it is considered to be one of the most difficult to measure accurately so far. Over the past two decades, eleven precision measurements of the gravitational constant have been performed, and the latest recommended value for G published by the Committee on Data for Science and Technology (CODATA) is (6.674 08 ± 0.000 31) × 10−11 m3 kg−1 s−2 with a relative uncertainty of 47 parts per million. This uncertainty is the smallest compared with previous CODATA recommended values of G; however, it remains a relatively large uncertainty among other fundamental physical constants. In this paper we briefly review the history of the G measurement, and introduce eleven values of G adopted in CODATA 2014 after 2000 and our latest two values published in 2018 using two independent methods.

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5

FALKENBERG, SVEN, and SERGEI D. ODINTSOV. "GAUGE DEPENDENCE OF THE EFFECTIVE AVERAGE ACTION IN EINSTEIN GRAVITY." International Journal of Modern Physics A 13, no. 04 (1998): 607–23. http://dx.doi.org/10.1142/s0217751x98000263.

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We study the gauge dependence of the effective average action Γk and Newtonian gravitational constant using the RG equation for Γk. Then we truncate the space of action functionals to get a solution of this equation. We solve the truncated evolution equation for the Einstein gravity in the De Sitter background for a general gauge parameter α and obtain a system of equatons for the cosmological and Newtonian constants. Analyaing the running of the gravitational constant we find that the Newtonian constant depends strongly on the gauge parameter. This leads to the appearance of antiscreening and screening behavior of the quantum gravity. The resolution of the gauge dependence problem is suggested. For physical gauges like the Landau–DeWitt gauge the Newtonian constant shows an antiscreening.

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6

Seshavatharam, UVS, and S. Lakshminarayana. "Is Newtonian gravitational constant a quantized constant of microscopic quantum gravity?" International Journal of Advanced Astronomy 8, no. 2 (2020): 29. http://dx.doi.org/10.14419/ijaa.v8i2.30976.

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Considering the Newtonian gravitational constant as a quantized constant of microscopic quantum gravity, an attempt is made to fit its value in a verifiable approach with reference to three large atomic gravitational constants pertaining to weak, strong and electromagnetic interactions linked with a quantum relation. Estimated value seems to be 865 ppm higher than the recommended value.

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7

Wood, Barry M. "Recommending a value for the Newtonian gravitational constant." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372, no. 2026 (2014): 20140029. http://dx.doi.org/10.1098/rsta.2014.0029.

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The primary objective of the CODATA Task Group on Fundamental Constants is ‘to periodically provide the scientific and technological communities with a self-consistent set of internationally recommended values of the basic constants and conversion factors of physics and chemistry based on all of the relevant data available at a given point in time’. I discuss why the availability of these recommended values is important and how it simplifies and improves science. I outline the process of determining the recommended values and introduce the principles that are used to deal with discrepant results. In particular, I discuss the specific challenges posed by the present situation of gravitational constant experimental results and how these principles were applied to the most recent 2010 recommended value. Finally, I speculate about what may be expected for the next recommended value of the gravitational constant scheduled for evaluation in 2014.

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8

Zumberge, Mark A., John A. Hildebrand, J. Mark Stevenson, et al. "Submarine measurement of the Newtonian gravitational constant." Physical Review Letters 67, no. 22 (1991): 3051–54. http://dx.doi.org/10.1103/physrevlett.67.3051.

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9

HSUI, A. T. "Borehole Measurement of the Newtonian Gravitational Constant." Science 237, no. 4817 (1987): 881–83. http://dx.doi.org/10.1126/science.237.4817.881.

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10

Milyukov, V. K., Chen Tao, and A. P. Mironov. "Problems of measurement of the Newtonian gravitational constant." Gravitation and Cosmology 15, no. 1 (2009): 65–68. http://dx.doi.org/10.1134/s0202289309010162.

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