Results 31 to 40 of about 40,502 (295)

The Origin of Gravitation

open access: yes, 2021
More than three hundred years ago: Newton thought that the reason of apple falling was due to gravity, although he discovered the gravity in the earth, he did not know what how produce gravitation; he said that God is the first driving force.
Physicist Zheng shengming (11454919)
core   +1 more source

Einstein’s Geometrical versus Feynman’s Quantum-Field Approaches to Gravity Physics: Testing by Modern Multimessenger Astronomy

open access: yesUniverse, 2020
Modern multimessenger astronomy delivers unique opportunity for performing crucial observations that allow for testing the physics of the gravitational interaction.
Yurij Baryshev
doaj   +1 more source

Gravitational atoms [PDF]

open access: yesPhysical Review D, 2019
Particles in a yet unexplored dark sector with sufficiently large mass and small gauge coupling may form purely gravitational atoms (quantum gravitational bound states) with a rich phenomenology. In particular, we investigate the possibility of having an observable signal of gravitational waves or ultra high energy cosmic rays from the decay of ...
Nielsen, Niklas G.   +2 more
openaire   +3 more sources

On the Status of the Geodesic Principle in Newtonian and Relativistic Physics [PDF]

open access: yes, 2011
A theorem due to Bob Geroch and Pong Soo Jang ["Motion of a Body in General Relativity." Journal of Mathematical Physics 16(1), (1975)] provides a sense in which the geodesic principle has the status of a theorem in General Relativity (GR).
Weatherall, James Owen   +1 more
core   +1 more source

Glass Spheres and Frame Used for Determining Gravitation

open access: yes, 1930
The factor G in the Newtonian formula F = G x Mm/d2 is the universal constant of gravitation. It was first measured in 1798 in a classic experiment by Henry Cavendish using a torsion balance apparatus.
Heyl, Paul R.
core   +1 more source

Gravitational and Anti-Gravitational Applications

open access: yesInternational Journal of Geosciences, 2017
It is now possible to partially deflect gravitation away from an object so that the gravitational attraction on the object is reduced. That effect makes it possible to extract energy from the gravitational field, which makes the generation of gravito-electric power technologically feasible.
openaire   +3 more sources

Statistical Mechanics-Based Schrödinger Treatment of Gravity

open access: yesEntropy, 2019
The entropic gravity conception proposes that what has been traditionally interpreted as unobserved dark matter might be merely the product of quantum effects.
Angelo Plastino, M. C. Rocca
doaj   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

open access: yesFEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang   +4 more
wiley   +1 more source

On (Some) Explanations in Physics [PDF]

open access: yes, 2010
I offer one possible explanation of why inertial and gravitational mass are equal in Newtonian gravitation. I then argue that the explanation given is an example of a kind of explanation that is not captured by standard philosophical accounts of ...
Weatherall, James Owen   +1 more
core   +1 more source

Adam Smith et la physique de Newton

open access: yesŒconomia, 2012
In most of Smith's writings we find references to the natural philosophy of Newton. Beyond the use of Newtonian concepts and laws to deal with specific issues, we would like to focus on the relationship between the Smithian representation of the social ...
Arnaud Diemer, Hervé Guillemin
doaj   +1 more source

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