gravitational acceleration - meaning and definition. What is gravitational acceleration
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What (who) is gravitational acceleration - definition


Gravitational acceleration         
In physics, gravitational acceleration is the acceleration of an object in free fall within a vacuum (and thus without experiencing drag). This is the steady gain in speed caused exclusively by the force of gravitational attraction.
Gravitational lens         
  • Eddington]]'s photographs of the 1919 [[solar eclipse]] experiment, presented in his 1920 paper announcing its success
  • Gravitational lensing – intervening galaxy modifies appearance of a galaxy far behind it (video; artist's concept).
  • access-date=23 June 2017}}</ref>
  • This schematic image shows how light from a distant galaxy is distorted by the gravitational effects of a foreground galaxy, which acts like a lens and makes the distant source appear distorted, but magnified, forming characteristic rings of light, known as Einstein rings.
  • An analysis of the distortion of SDP.81 caused by this effect has revealed star-forming clumps of matter.
  • access-date=29 October 2018}}</ref>
  • A light source passes behind a gravitational lens (invisible point mass placed in the center of the image). The aqua circle is the light source as it would be seen if there were no lens, while white spots are the multiple images of the source (see [[Einstein ring]]).
  • This image from the NASA/ESA Hubble Space Telescope shows the galaxy cluster [[MACS J1206]].
DISTRIBUTION OF MATTER BETWEEN A DISTANT LIGHT SOURCE AND A OBSERVER
Gravitational lensing; Gravitational lense; Gravitational Lens; Bend light; Gravitationally lensed galaxy; Gravitational arc; Einstein arc; Gravitational Lensing; Gravity lens; Gravitational lenses; Multiple images (gravitational lensing); Gravitatinal lensing; Gravitational Lenses; Macrolensing; Solar lens; Gravitational deflection
A gravitational lens is a distribution of matter (such as a cluster of galaxies) between a distant light source and an observer that is capable of bending the light from the source as the light travels toward the observer. This effect is known as gravitational lensing, and the amount of bending is one of the predictions of Albert Einstein's general theory of relativity.
gravitational lens         
  • Eddington]]'s photographs of the 1919 [[solar eclipse]] experiment, presented in his 1920 paper announcing its success
  • Gravitational lensing – intervening galaxy modifies appearance of a galaxy far behind it (video; artist's concept).
  • access-date=23 June 2017}}</ref>
  • This schematic image shows how light from a distant galaxy is distorted by the gravitational effects of a foreground galaxy, which acts like a lens and makes the distant source appear distorted, but magnified, forming characteristic rings of light, known as Einstein rings.
  • An analysis of the distortion of SDP.81 caused by this effect has revealed star-forming clumps of matter.
  • access-date=29 October 2018}}</ref>
  • A light source passes behind a gravitational lens (invisible point mass placed in the center of the image). The aqua circle is the light source as it would be seen if there were no lens, while white spots are the multiple images of the source (see [[Einstein ring]]).
  • This image from the NASA/ESA Hubble Space Telescope shows the galaxy cluster [[MACS J1206]].
DISTRIBUTION OF MATTER BETWEEN A DISTANT LIGHT SOURCE AND A OBSERVER
Gravitational lensing; Gravitational lense; Gravitational Lens; Bend light; Gravitationally lensed galaxy; Gravitational arc; Einstein arc; Gravitational Lensing; Gravity lens; Gravitational lenses; Multiple images (gravitational lensing); Gravitatinal lensing; Gravitational Lenses; Macrolensing; Solar lens; Gravitational deflection
¦ noun Astronomy a massive object whose gravitational field distorts light passing through it, producing a multiple image of a more remote object.