animation at Wikimedia Commons: http://commons.wikimedia.org/wiki/Image:Villarceau_circles.gif Notes ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ Several modifications were
DescriptionVillarceaucircles frame.png English: Single frame of Image:Villarceaucircles.gif for thumbnail purposes. Date 2 October 2006 Source Image:Villarceau