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Optical illusion: Circle and Dot (colour litho)

IMAGE number
LLM5206013
Image title
Optical illusion: Circle and Dot (colour litho)
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Artist
English School, (20th century) / English
Location
Private Collection
Medium
colour lithograph
Image description

Circle and Dot. Turn the card lengthways, and hold about 12 inches away from the face. Keep your eyes both fixed on the centre of the card, and slowly bring it nearer. The small blue circle will gradually appear to cross over, and can easily be made to fit exactly into the white space in the centre of the large yellow circle. Illustration for one of a set of cigarette cards on the subject of Optical Illusions, published by Ogden's, early 20th century.

Photo credit
© Look and Learn / Bridgeman Images
Image keywords
optical / cards / historical / cigarette / card / history / circle / illusion / illusions / educational / visual / perception
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Asset - General information
Largest available format 1788 × 3325 px 1 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB]
Large 1788 × 3325 px 151 × 282 mm 1.2 MB
Medium 551 × 1024 px 47 × 87 mm 702 KB

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