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Caption: Animation explaining the effect of gravitational lensing, in which the image of a distant object is distorted by the gravitational field of an object in front of it. Initially, a distant galaxy is at left, and the Earth at right. Diverging light rays from the galaxy are shown in white. If a massive object is placed in the middle, relativity predicts that the light will be bent towards the mass, in effect focussing it on Earth like a converging lens. Different arrangements produce slightly different effects. A single large mass can produce a ring with a bright central spot (an Einstein ring, orange), or multiple images forming a cross (an Einstein cross, blue). When the lensing object is a massive cluster of galaxies, images of the more distant galaxy are likely to be smeared into thin irregular arcs.

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Keywords: 3 dimensional, 3d, 40 seconds or greater, animated, animation, arc, arcs, astronomical, astronomy, astrophysical, astrophysics, bending, bent, cross, curve, curved, curving, deep space, diagram, diagrammatic, earth, education, educational, einstein, galactic, galaxies, galaxy, gravitational lens, gravity, luminous, mass, massive, outer, path, planet, planetary, quasar, quasars, relativity, ring, science, scientific, space, spacetime, star, stellar, track

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Gravitational lensing demonstration

K002/7422 Rights Managed

Downloadable master

Duration: 00:00:40

Frame size: 768x576

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 237.1M


Capture format: QuickTime Animation

Frame size: 720x576

Codec: DV - PAL

Interlaced: Yes

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