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Apr 14, 2021 at 23:04 history protected CommunityBot
Aug 30, 2011 at 2:05 history edited mattdm
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May 16, 2011 at 15:54 comment added Colin K This has also been answered at the physics.SE: physics.stackexchange.com/q/9899/869
Mar 10, 2011 at 15:19 vote accept Lazer
Mar 9, 2011 at 17:26 comment added whuber This question is also answered, with additional illustrations and explanations of the phenomenon, at photo.stackexchange.com/q/6605/1356 .
Mar 9, 2011 at 14:23 history tweeted twitter.com/#!/StackPhotos/status/45489809917087744
Mar 9, 2011 at 13:30 answer added fzwo timeline score: 8
Mar 9, 2011 at 10:24 answer added Matt Grum timeline score: 49
Mar 9, 2011 at 10:12 answer added Nick Bedford timeline score: 15
Mar 9, 2011 at 9:53 history asked Lazer CC BY-SA 2.5