A gravitational lens is matter, such as a cluster of galaxies or a point particle, that bends light from a distant source as it travels toward an observer...
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Speed of gravity (section Aberration of field direction in general relativity, for a weakly accelerated observer)
"Gravimagnetism, Causality, and Aberration of Gravity in the Gravitational Light-Ray Deflection Experiments". General Relativity and Gravitation. 39 (10): 1583–1624...
45 KB (5,576 words) - 23:18, 10 September 2024
Le Sage's theory of gravitation is a kinetic theory of gravity originally proposed by Nicolas Fatio de Duillier in 1690 and later by Georges-Louis Le...
83 KB (11,200 words) - 10:10, 31 May 2024
Tests of general relativity (redirect from Gravitational deflection of light)
"Gravimagnetism, causality, and aberration of gravity in the gravitational light-ray deflection experiments". General Relativity and Gravitation. 39 (10): 1583–1624...
103 KB (12,444 words) - 11:21, 23 August 2024
The following is a timeline of gravitational physics and general relativity. 3rd century B.C. – Aristarchus of Samos proposes the heliocentric model....
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Lens (section Spherical aberration)
the aberration. Several types of aberration affect image quality, including spherical aberration, coma, and chromatic aberration. Spherical aberration occurs...
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explanation of aberration, Max Planck (1899) argued in a letter to Lorentz, that the aether might not be incompressible, but condensed by gravitation in the vicinity...
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Doppler effect (redirect from Aberration redshift)
propagating in vacuum, as is possible for electromagnetic waves or gravitational waves, only the difference in velocity between the observer and the...
33 KB (4,178 words) - 03:05, 19 August 2024
and also coined this term. This was a significant step in reducing the aberration in optical systems. He also experimented with hollow lenses, holding different...
3 KB (224 words) - 02:35, 6 September 2023
Scientific Revolution (section Gravitation)
publication Principia which formulated the laws of motion and universal gravitation, thereby completing the synthesis of a new cosmology. The subsequent...
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Geocentric model (section Gravitation)
Newton showed that elliptical orbits could be derived from his laws of gravitation. The astronomical predictions of Ptolemy's geocentric model, developed...
75 KB (8,810 words) - 11:12, 6 September 2024
Spacetime (section Gravitation)
gravitation can be discovered following alongside the motions of a single particle.: 175–190 In any analysis of spacetime, evidence of gravitation requires...
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Problems with Einstein's general theory of relativity (section Incompatibility with gravitational waves)
most powerful arguments and concepts ever presented in the history of gravitational theory, some aspects of Einstein's attempted implementation of a general...
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value for the solar parallax (and for the constant of aberration and the Gaussian gravitational constant) were incorporated into the first international...
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die Mitführung des Lichtes in Glas und die Aberration" [On the entrainment of light in glass and aberration]. Astronomische Nachrichten (in German). 198...
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Orbital decay (section Gravitational radiation)
e., aberration of light. For an object with prograde rotation, these two effects will apply opposing, but generally unequal, forces. Gravitational radiation...
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Cosmic microwave background (redirect from Primordial gravitational wave)
Crater near its boundary with the constellation Leo The CMB dipole and aberration at higher multipoles have been measured, consistent with galactic motion...
108 KB (13,172 words) - 01:01, 1 September 2024
Velocity-addition formula (section Aberration of light)
velocity-addition formulas include the Doppler shift, Doppler navigation, the aberration of light, and the dragging of light in moving water observed in the 1851...
60 KB (11,057 words) - 13:56, 20 July 2024
Optical telescope (section The five Seidel aberrations)
parabolic mirrors (primarily a reduction of spherical aberration with elimination of chromatic aberration) led to several proposed designs for reflecting telescopes...
58 KB (8,133 words) - 23:45, 21 July 2024
Lorentz ether theory (section Gravitation)
However, other experiments like the Fizeau experiment and the effect of aberration disproved that model. A possible solution came in sight, when in 1889...
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L'aberration de la lumière et les équations de la théorie de la relativité ("The aberration of light and the equations of the theory of relativity") and an essay...
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are separated in space. Coulomb's law and Newton's law of universal gravitation are based on action at a distance. Historically, action at a distance...
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equations are known as the Liénard–Wiechert gravitational potentials. Wave-like solutions (variations) in gravitational field at any point of space at some instant...
3 KB (495 words) - 17:09, 4 April 2021
electromagnetism. Massless particles and field perturbations, such as gravitational waves, also travel at speed c in vacuum. Such particles and waves travel...
145 KB (15,360 words) - 21:52, 14 September 2024
Virgo interferometer (category Interferometric gravitational-wave instruments)
interferometer is a large Michelson interferometer designed to detect the gravitational waves predicted by general relativity. It is in Santo Stefano a Macerata...
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sources of redshift/blueshift: Doppler shifts; gravitational redshifts (due to light exiting a gravitational field); and cosmological expansion (where space...
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as stellar aberration. Bradley explained this effect in the context of Newton's corpuscular theory of light, by showing that the aberration angle was given...
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rejected, by Isaac Newton as a practical demonstration of his theory of gravitation; however, a team of scientists, notably Nevil Maskelyne, the Astronomer...
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latitudes correspondingly bulged.: 9 Potential factors involved in this aberration include tides and subcrustal motion (e.g. plate tectonics). John A. O'Keefe...
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suffered from severe chromatic aberration. Although reflecting telescopes produce other types of optical aberrations, it is a design that allows for...
33 KB (3,918 words) - 17:54, 3 September 2024