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Что (кто) такое gravitational acceleration - определение
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](https://commons.wikimedia.org/wiki/Special:FilePath/1919 eclipse negative.jpg?width=200 "Eddington]]'s photographs of the 1919 [[solar eclipse]] experiment, presented in his 1920 paper announcing its success")
![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]]).](https://commons.wikimedia.org/wiki/Special:FilePath/Imageedit 6 2578820362.gif?width=200 "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]].](https://commons.wikimedia.org/wiki/Special:FilePath/MACS J1206.jpg?width=200 "This image from the NASA/ESA Hubble Space Telescope shows the galaxy cluster [[MACS J1206]].")
![[[Abell 1689]] - actual gravitational lensing effects ([[Hubble Space Telescope]]).](https://commons.wikimedia.org/wiki/Special:FilePath/Gravitationell-lins-4.jpg?width=200 "[[Abell 1689]] - actual gravitational lensing effects ([[Hubble Space Telescope]]).")
![[[Dark matter]] distribution - weak gravitational lensing ([[Hubble Space Telescope]]).](https://commons.wikimedia.org/wiki/Special:FilePath/COSMOS 3D dark matter map.jpg?width=200 "[[Dark matter]] distribution - weak gravitational lensing ([[Hubble Space Telescope]]).")
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
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.
