Mathematics, songs, puzzles, illusions, immigration
Monday, 31 March 2008
Illusions 14
Stare at the centre dot for a while and watch the blue circle disappear!
1 comment:
Anonymous
18 October 2008 at 16:29
...it didn't disappear.
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Stare at the centre dot for a while and watch the blue circle disappear!
...it didn't disappear.
ReplyDelete