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Journal articles on the topic 'Gravity'

Author: Grafiati

Published: 4 June 2021

Last updated: 21 September 2024

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1

TOUNSI, Raja. "Gravity Syndrome." Psychology and Mental Health Care 3, no. 4 (December 23, 2019): 01–17. http://dx.doi.org/10.31579/2637-8892/060.

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I love what I am doing because it offers me a constant variety and diversity, without ever having a normal day, creativity, growth and new concepts, seeing my innovations grow and develop diversity to make a lot of research and no routine - The opportunity to create something new for a better world. In this book I developed relativity at the body level in its atmospheric setting. The human body is a ball of renewable energy; this study is based on the scientific definition of the relativity at the corporal level compared to the atmospheric environment which shelters it. This hypothesis accentuates the importance of the energetic material and its primordial role in future cures for certain diseases, especially neurological ones.

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2

Unnikrishnan, C. S., and George T. Gillies. "Quantum gravito-optics: a light route from semiclassical gravity to quantum gravity." Classical and Quantum Gravity 32, no. 14 (July 2, 2015): 145012. http://dx.doi.org/10.1088/0264-9381/32/14/145012.

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3

Abebe, Amare, and Maye Elmardi. "Irrotational-fluid cosmologies in fourth-order gravity." International Journal of Geometric Methods in Modern Physics 12, no. 10 (October 25, 2015): 1550118. http://dx.doi.org/10.1142/s0219887815501182.

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In this paper, we explore classes of irrotational-fluid cosmological models in the context of f(R)-gravity in an attempt to put some theoretical and mathematical restrictions on the form of the f(R) gravitational Lagrangian. In particular, we investigate the consistency of linearized dust models for shear-free cases as well as in the limiting cases when either the gravito-magnetic or gravito-elecric components of the Weyl tensor vanish. We also discuss the existence and consistency of classes of non-expanding irrotational spacetimes in f(R)-gravity.

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4

Glennon, Keith, and Peter West. "Gravity, dual gravity and A1+++." International Journal of Modern Physics A 35, no. 14 (May 20, 2020): 2050068. http://dx.doi.org/10.1142/s0217751x20500682.

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We construct the nonlinear realisation of the semidirect product of the very extended algebra [Formula: see text] and its vector representation. This theory has an infinite number of fields that depend on a space–time with an infinite number of coordinates. Discarding all except the lowest level field and coordinates the dynamics is just Einstein’s equation for the graviton field. We show that the gravity field is related to the dual graviton field by a duality relation and we also derive the equation of motion for the dual gravity field.

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5

Verdaguer, E. "Stochastic gravity: beyond semiclassical gravity." Journal of Physics: Conference Series 66 (May 1, 2007): 012006. http://dx.doi.org/10.1088/1742-6596/66/1/012006.

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6

Achúcarro, Ana. "Lineal gravity from planar gravity." Physical Review Letters 70, no. 8 (February 22, 1993): 1037–40. http://dx.doi.org/10.1103/physrevlett.70.1037.

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7

Baccetti, Valentina, Prado Martín-Moruno, and Matt Visser. "Massive gravity from bimetric gravity." Classical and Quantum Gravity 30, no. 1 (December 4, 2012): 015004. http://dx.doi.org/10.1088/0264-9381/30/1/015004.

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8

Merati, G., S. Rampichini, M. Roselli, E. Roveda, G. Pizzini, and A. Veicsteinas. "Gravity and gravidity: will microgravity assist pregnancy?" Sport Sciences for Health 1, no. 3 (May 2006): 129–36. http://dx.doi.org/10.1007/s11332-006-0023-x.

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9

Goodman, Jim. "Gravity." JOURNAL OF ADVANCES IN PHYSICS 13, no. 2 (March 16, 2017): 4689–91. http://dx.doi.org/10.24297/jap.v13i2.5869.

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Considering two balls of Z protons each near each other the residual electric potential V is calculated. Also the gravitational potential is calculated. The Gravitational constant is the same for both. Thus the electric field creates gravity. This calculation is possible because the multibody energy states are known exactly. The relativistic correction of 2 has been found from the Klein-Gordon Equation solution. This finding is an important step in reducing known forces to one field. Recall the electric field is generated by motion in the magnetic field of atoms of a magnetic dipole.Â The mass is a function of the length of the magnetic dipole.

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10

Beierle, Andrew W. M. "Gravity." Harrington Gay Men's Fiction Quarterly 3, no. 3 (June 2001): 40–58. http://dx.doi.org/10.1300/j152v03n03_04.

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11

Henry, DeWitt. "Gravity." Iowa Review 31, no. 2 (October 2001): 53–59. http://dx.doi.org/10.17077/0021-065x.5386.

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12

Seyburn, P. "Gravity." Minnesota review 2013, no. 80 (January 1, 2013): 61. http://dx.doi.org/10.1215/00265667-2016742.

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13

Obenaus, Stefan Thomas, and Ted H. Szymanski. "Gravity." ACM Transactions on Design Automation of Electronic Systems 8, no. 3 (July 2003): 298–315. http://dx.doi.org/10.1145/785411.785413.

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14

Kinsella, Seán. "Gravity." Christianity & Literature 48, no. 4 (September 1999): 444. http://dx.doi.org/10.1177/014833319904800404.

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15

Hall, Richard S., and Humberto Cervantes. "Gravity." ACM SIGSOFT Software Engineering Notes 28, no. 5 (September 2003): 379–82. http://dx.doi.org/10.1145/949952.940126.

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16

Stock, David. "Gravity." Dialectical Anthropology 32, no. 4 (December 2008): 339. http://dx.doi.org/10.1007/s10624-009-9082-0.

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17

Rozmarin, Eyal. "Gravity." Psychoanalytic Dialogues 30, no. 5 (September 2, 2020): 641–42. http://dx.doi.org/10.1080/10481885.2020.1797415.

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18

Broughton, T. Alan. "Gravity." Sewanee Review 121, no. 2 (2013): 173–90. http://dx.doi.org/10.1353/sew.2013.0041.

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19

Monte, Bryan R. "Gravity." Italian Americana XL, no. 1 (February 1, 2022): 56. http://dx.doi.org/10.5406/2327753x.40.1.20.

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20

Manik, Charla Tri Selda. "Tool Demonstration Lamp Gravity (Gravity Lights)." Journal of Science Technology (JoSTec) 1, no. 1 (December 29, 2019): 15–20. http://dx.doi.org/10.55299/jostec.v1i1.47.

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Petromax lamps have many disadvantages such as kerosene which is increasingly expensive and limited. Petromax lamps also produce pollution in the form of smoke produced which can cause disease. The danger of the petromax lamp is that it can cause a fire if there is negligence. But it is undeniable, people really need lighting from lights, especially at night. Therefore, an alternative plan is needed that can replace the petromax lamp by using other available energy sources. A lamp design using renewable energy that can be used throughout the day without the slightest cost in its use. One of the renewable energies available on earth that can be used to replace petromax lamps is energy that comes from the gravitational force of the earth. Due to the lack of knowledge about the use of gravity as renewable energy, a learning tool is needed that can be used especially by electrical engineering students to better understand the concept of gravity which is applied to a visual aid in the form of a gravity lamp.

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21

Sobouti, Y. "Massive Gravity as an Alternative Gravity." Gravitation and Cosmology 26, no. 1 (January 2020): 1–6. http://dx.doi.org/10.1134/s0202289320010132.

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22

SORKIN, R. D. "Quantum Gravity: Quantum Theory of Gravity." Science 228, no. 4699 (May 3, 1985): 572. http://dx.doi.org/10.1126/science.228.4699.572.

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23

Hull, C. M. "-gravity anomalies (I). Induced quantum -gravity." Nuclear Physics B 367, no. 3 (December 1991): 731–43. http://dx.doi.org/10.1016/0550-3213(91)90015-p.

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24

Barnes, Gary J., John M. Lumley, Phill I. Houghton, and Richard J. Gleave. "Comparing gravity and gravity gradient surveys." Geophysical Prospecting 59, no. 1 (December 13, 2010): 176–87. http://dx.doi.org/10.1111/j.1365-2478.2010.00900.x.

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25

Dias, Frédéric, and Christian Kharif. "NONLINEAR GRAVITY AND CAPILLARY-GRAVITY WAVES." Annual Review of Fluid Mechanics 31, no. 1 (January 1999): 301–46. http://dx.doi.org/10.1146/annurev.fluid.31.1.301.

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26

BERGSHOEFF, E., C. N. POPE, L. J. ROMANS, E. SEZGIN, and X. SHEN. "W∞ GRAVITY AND SUPER-W∞ GRAVITY." Modern Physics Letters A 05, no. 24 (September 30, 1990): 1957–66. http://dx.doi.org/10.1142/s0217732390002237.

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27

Rubincam, David Parry, B. Fong Chao, Kenneth H. Schatten, and William W. Sager. "Non-Newtonian gravity or gravity anomalies?" Eos, Transactions American Geophysical Union 69, no. 50 (1988): 1636. http://dx.doi.org/10.1029/88eo01233.

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28

K, Kabe. "How Quantum is Quantum Gravity?" Physical Science & Biophysics Journal 7, no. 1 (January 5, 2023): 1–4. http://dx.doi.org/10.23880/psbj-16000244.

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Nature does not compartmentalize its happenings into different theories or disciplines. The theories are put forth by us to approximately understand the finer workings of nature. All theories are mere mathematical models built to understand nature. Any or all of them can be superseded by a better model or combination of models. The current paper analyses the formulation of Planck scale quantities, the workings of the temporal gauge, the concept of time other related fundamental issues. In particular, the paper points out that the force at the Planck scale is non-quantum.

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29

Thanh, Đỗ Đức. "The utility of shift-sampling method to enhance the precision of the calculation of gravity effect in frequency domain ·." VIETNAM JOURNAL OF EARTH SCIENCES 25, no. 2 (March 19, 2018): 129–33. http://dx.doi.org/10.15625/0866-7187/25/2/11893.

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20 and 30 graviy inversion in frequency domain was widely applied in the interpretation of potential field data, because, unlike the interpretation in space domain, it permits to reduce significaltly computer time. Precision of the interpretation in frequency domain is dependent upon the precision of the transformation between the space and frequency domain. This precision can be improved by the shift - sampling method, which is based on the discrete Fourier transform (OFT) deviation equation.In this paper, shift sampling method is applied to estimate it·s utilization in the calculation gravity effect on both 20 and 30 mathematical models, in which an infinite horizontal cylinder is used as 20 model and a sedimentary basin approximated by vertical rectangular prisms is used as 30 model.With application of shift- sampling method, precision of the calculation gravity effect in frequency domain is enhanced. For both models, root-meansquare error reduced by several tens times. This makes gravity anomaly calculated in frequency domain almost exactly in consistence with the gravity anomaly calculated in space domain. Therefore thismethod helps in the solving the problem of gravity inversion in consistence frequency domain.

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30

Dibrov, Nikolay V. "Exact Formula for Shadow-Gravity, Strong Gravity." OALib 01, no. 09 (2014): 1–10. http://dx.doi.org/10.4236/oalib.1101076.

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31

Oda, Ichiro. "Emergence of Einstein gravity from Weyl gravity." Advanced Studies in Theoretical Physics 15, no. 8 (2021): 349–72. http://dx.doi.org/10.12988/astp.2021.91707.

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32

O’Brien, James G., Spasen Chaykov, Thomas L. Chiarelli, Taylor Saintable, and Justin Harrington. "Conformal Gravity Solutions to Standard Gravity Problems." International Journal of Modern Physics: Conference Series 45 (January 2017): 1760003. http://dx.doi.org/10.1142/s2010194517600035.

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Gravitational theories outside standard general relativity have been drawing increased attention over the past several years, mostly due to the lack of direct observational evidence of dark matter. With some recent very high level dark matter searches continuing, and the parameter space to search decreasing has lead to a new interest in rethinking gravity at the largest of scales. As an alternative gravitational theory, conformal gravity has enjoyed much of the success of Modified Newtonian Dynamics (MOND) in predicting phenomenology, but differs dramatically in its initial construction. In this work, we explore some recent advances in conformal gravity, which help to build the case for support of such an alternative theory. Here, we highlight conformal gravity’s success in fitting new rotation curves, its ability to explain velocity dispersions in clusters, the initial steps towards gravitational lensing and finally, some preliminary work on explaining universal centripetal acceleration trends in galaxies.

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33

BENNETT, D. L., L. V. LAPERASHVILI, H. B. NIELSEN, and A. TUREANU. "GRAVITY AND MIRROR GRAVITY IN PLEBANSKI FORMULATION." International Journal of Modern Physics A 28, no. 12 (May 5, 2013): 1350035. http://dx.doi.org/10.1142/s0217751x13500358.

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We present several theories of four-dimensional gravity in the Plebanski formulation, in which the tetrads and the connections are the independent dynamical variables. We consider the relation between different versions of gravitational theories: Einsteinian, "topological," "mirror" gravities and gravity with torsion. We assume that our world, in which we live, is described by the self-dual left-handed gravity, and propose that if the Mirror World exists in Nature, then the "mirror gravity" is the right-handed antiself-dual gravity. In this connection, we give a brief review of gravi-weak unification models. In accordance with cosmological measurements, we consider the Universe with broken mirror parity. We also discuss the problems of cosmological constant and communication between visible and mirror worlds. Investigating a special version of the Riemann–Cartan space–time, which has torsion as an additional geometric property, we have shown that in the Plebanski formulation the ordinary and dual "topological" sectors of gravity, as well as the gravity with torsion, are equivalent. Equations of motion are obtained. In this context, we have also discussed a "pure connection gravity" — a diffeomorphism-invariant gauge theory of gravity. Loop Quantum Gravity is also briefly reviewed.

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34

Paunković, Nikola, and Marko Vojinović. "Gravity-matter entanglement in Regge quantum gravity." Journal of Physics: Conference Series 701 (March 2016): 012035. http://dx.doi.org/10.1088/1742-6596/701/1/012035.

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35

Amelino-Camelia, Giovanni. "Gravity-wave interferometers as quantum-gravity detectors." Nature 398, no. 6724 (March 1999): 216–18. http://dx.doi.org/10.1038/18377.

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36

Li, Xiong. "Vertical resolution: Gravity versus vertical gravity gradient." Leading Edge 20, no. 8 (August 2001): 901–4. http://dx.doi.org/10.1190/1.1487304.

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37

Inostroza, C., A. Salazar, and P. Salgado. "Brans–Dicke gravity theory from topological gravity." Physics Letters B 734 (June 2014): 377–82. http://dx.doi.org/10.1016/j.physletb.2014.05.080.

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38

de Haro, Sebastian. "Dualities and emergent gravity: Gauge/gravity duality." Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 59 (August 2017): 109–25. http://dx.doi.org/10.1016/j.shpsb.2015.08.004.

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39

Schultz-Ela, D. D. "Excursus on gravity gliding and gravity spreading." Journal of Structural Geology 23, no. 5 (May 2001): 725–31. http://dx.doi.org/10.1016/s0191-8141(01)00004-9.

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40

Chiba, Takeshi. "1/R gravity and scalar-tensor gravity." Physics Letters B 575, no. 1-2 (November 2003): 1–3. http://dx.doi.org/10.1016/j.physletb.2003.09.033.

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41

Matsuo, Naoki. "Einstein gravity as spontaneously broken Weyl gravity." General Relativity and Gravitation 22, no. 5 (May 1990): 561–93. http://dx.doi.org/10.1007/bf00756230.

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42

Malyshev, V. A. "Probability related to quantum gravity. Planar gravity." Russian Mathematical Surveys 54, no. 4 (August 31, 1999): 685–728. http://dx.doi.org/10.1070/rm1999v054n04abeh000178.

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43

Mullick, Lipika, and Pratul Bandyopadhyay. "Gravity without metric, torsion, and topological gravity." Journal of Mathematical Physics 36, no. 1 (January 1995): 370–82. http://dx.doi.org/10.1063/1.531312.

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44

Trimble, Virginia. "Gravity before Einstein and Schwinger before gravity." Canadian Journal of Physics 92, no. 9 (September 2014): 955–58. http://dx.doi.org/10.1139/cjp-2013-0405.

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Julian Schwinger was a child prodigy, and Albert Einstein distinctly not; Schwinger had something like 73 graduate students, and Einstein very few. But both thought that gravity was important. They were not, of course, the first, nor is the disagreement on how one should think about gravity, which was highlighted at the June 2012 meeting of the American Astronomical Society, the first such dispute. Explored here are several views of what gravity is supposed to do: action at a distance versus luminiferous ether, universal gravitation versus action only on solids, finite versus infinite propagation speed, and whether the exponent in the 1/r2 law is precisely two, or two plus a smidgeon (a suggestion by Simon Newcomb among others). Second, an attempt is made to describe Julian Schwinger’s early work and how it might have prefigured his “source theory,” beginning with his unpublished 1934 paper “on the interaction of several electrons,” through his days at Berkeley with Oppenheimer, Gerjuoy, and others, to the application of nuclear physics ideas to radar, and of radar engineering techniques to nuclear physics. Those who believe that good jobs are difficult to come by now might want to contemplate the couple of years Schwinger spent teaching introductory physics at Purdue before moving on to the Radiation Laboratory in 1942.

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45

Zhu, Lizhi, and Christopher Jekeli. "Gravity gradient modeling using gravity and DEM." Journal of Geodesy 83, no. 6 (October 15, 2008): 557–67. http://dx.doi.org/10.1007/s00190-008-0273-2.

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46

Visser, Matt. "Rastall gravity is equivalent to Einstein gravity." Physics Letters B 782 (July 2018): 83–86. http://dx.doi.org/10.1016/j.physletb.2018.05.028.

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47

Kim, Juyoung, and Jeongsoo Kim. "Trade Area Analysis through Gravity Model." Journal of Channel and Retailing 26, no. 4 (December 2021): 49–72. http://dx.doi.org/10.17657/jcr.2021.10.31.3.

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48

Nafikova, Shirin. "Why Gravity is Not a Force?" International Journal of Science and Research (IJSR) 12, no. 2 (February 5, 2023): 879–80. http://dx.doi.org/10.21275/sr23213175955.

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49

Sato, Masanori. "Gravity entanglement." Physics Essays 34, no. 1 (March 14, 2021): 3–5. http://dx.doi.org/10.4006/0836-1398-34.1.3.

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Gravity is an entanglement, not a propagating force. Gravity entanglement is caused by the conservation of angular momentum among gravitationally connected objects, for example, the Sun and Jupiter. According to Newton’s idea that the gradient of the ether density ρΕ causes the gravitation of action at a distance as <mml:math display="inline"> <mml:mi>g</mml:mi> <mml:mo>∝</mml:mo> <mml:mfrac> <mml:mrow> <mml:mo>∂</mml:mo> <mml:msub> <mml:mrow> <mml:mi>ρ</mml:mi> </mml:mrow> <mml:mrow> <mml:mi>E</mml:mi> </mml:mrow> </mml:msub> </mml:mrow> <mml:mrow> <mml:mo>∂</mml:mo> <mml:mi>r</mml:mi> </mml:mrow> </mml:mfrac> </mml:math> , we discuss gravity entanglement, where the ether density ρΕ is proportional to the permittivity ε 0 and permeability μ 0.

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50

De Giuli, Eric, and A. Zee. "Glassy gravity." EPL (Europhysics Letters) 133, no. 2 (January 1, 2021): 20008. http://dx.doi.org/10.1209/0295-5075/133/20008.

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