Optical illusion: Cog Wheels with Rotary Movement
|Caption||Cog Wheels with Rotary Movement. Give the card a quick rotary movement. The brown circles will appear to revolve in one direction, while the cogged wheels will revolve the opposite way. The quicker the rotary motion given to the ticket, the faster the wheels will appear to revolve. Illustration for one of a set of cigarette cards on the subject of Optical Illusions, published by Ogden's, early 20th century.|
|Artist||English School (20th Century)|
|Artwork medium||colour lithograph|
|Copyright notice||© Look and Learn|
|optical illusions illusion visual perception cigarette cards card educational Cog Wheels Rotary Movement|
|Stock image ref||Sizes available||Views|
Hi-res: 2,927 x 5,467 pixels
Lo-res: 732 x 1,367 pixels
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