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The spinning dancer is a kinetic, bistable optical illusion resembling a rotating female dancer. The Spinning Dancer, also known as the Silhouette Illusion, is a kinetic, bistable, animated optical illusion originally distributed as a GIF animation showing a silhouette of a pirouetting female dancer.
Image:Right spinning dancer.gif and Image:Left spinning dancer.gif--Muhammad (talk) 15:15, 14 February 2008 (UTC) Support Well executed illusion, fascinating when it works. vlad§inger tlk 03:22, 15 February 2008 (UTC) ADDITIONAL INFO and help to "reverse" can be found here - this site states it's indeed "difficult" to get reversal. Also, note ...
Joseph Plateau created a combination of his phénakisticope and his Anorthoscope sometime between 1844 and 1849, resulting in a back-lit transparent disc with a sequence of figures that are animated when it is rotated behind a counter-rotating black disc with four illuminated slits, spinning four times as fast. Unlike the phénakisticope ...
Barrier-grid animation or picket-fence animation is an animation effect created by moving a striped transparent overlay across an interlaced image. The barrier-grid technique originated in the late 1890s, overlapping with the development of parallax stereography (Relièphographie) for 3D autostereograms. The technique has also been used for ...
A purple duck that wears a white sailor's hat and is one of the main characters. Quacula: Heckle & Jeckle: Filmation: A pale blue duck with a Daffy Duck-like beak and fangs, dressed in a blue jacket and a black cape with a red lining. Quacker: Tom & Jerry: MGM: Quacker talks a lot compared to Tom and Jerry. In many episodes, he is the only one ...
The only requirement was that this image was invisible, either by being the same color as the page, or by being transparent. Spacer GIFs themselves were small transparent image files. GIF files were used as it was a common format that supported transparency, unlike JPEG. These files were commonly named spacer.gif, transparent.gif or 1x1.gif.
Is this a duck or a rabbit? Is this a head-and-shoulders portrait of a young lady, or a close up of an old woman's face? At first you'll see one or the other and think it's obvious, then you'll see the other and realize that it's an illusion. Same with the spinning dancer. It is spinning both ways, it's all in how you look at it.
A flipper is a broad, flattened limb adapted for aquatic locomotion. It refers to the fully webbed, swimming appendages of aquatic vertebrates that are not fish. In animals with two flippers, such as whales, the flipper refers solely to the forelimbs.