Hi, I contribute mainly to the English wikipedia and a little bit to wikipedias in other languages. I also look for free images for articles and upload them to commons.

Edit tools

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I copied a lot of these from User:Nurg. Thank you.

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A flip

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stick figure





Gifs

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More cool gifs from commons.

Jupiter

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A cool gif from commons - Jupiter seen by Voyager 1 probe with blue filter. One image was taken every Jupiter day (approximately 10 hours). These pictures were taken from 01/06 to 02/03, 1979 ; and Voyager 1 flew from 58 million to 31 million kilometers from Jupiter during that time. The small, round, dark spots appearing in some frames are the shadows cast by the moons passing between Jupiter and the Sun, while the small, white flashes around the planet, are the moons themselves.

 









Lensing

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Lensing by a black hole. Animated simulation of gravitational lensing caused by a Schwarzschild black hole going past a background galaxy. A secondary image of the galaxy can be seen within the black hole Einstein ring on the opposite direction of that of the galaxy. The secondary image grows (remaining within the Einstein ring) as the primary image approaches the black hole. The surface brightness of the two images remain constant, but their angular size vary, hence producing an amplification of the galaxy luminosity as seen from a distant observer. The maximum amplification occurs when the background galaxy (or in the present case a bright part of it) is exactly behind the black hole.

 









The Wiki Lei Barnstar

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Created this Wiki Lei Barnstar to give to cool wikipedians to say thanks for the help, (or sorry, if that's the case). You can copy and give it away if you like.

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