optical illusion

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optical illusion

A visual impression that is inaccurately perceived.
See also: illusion
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Students enjoyed the challenge of creating an optical illusion. This project only took two days to complete, and it is also great if there is a limited budget.
Lenstore explained: "Optical illusions can confuse the brain and trick you into seeing things differently from reality.
People can take photos using trick-art and optical illusion ndash they can float in the air, crawl out of a crack in the ground, hide in a mouse hole from a cat or sit under the water.It is not about reality but a clever combination of colour, mirrors, angles, shadow perspective and the right position of the photographer.
Optical illusions can be fun to experience and debate, but understanding how human brains perceive these different phenomena remains an active area of scientific research.
Spread across the 450 square metre venue are several rooms in which visitors can enter and experience different optical illusions, in addition to exhibits on the wall that can almost get people hypnotised and brain teasers that people can interact with.
Another highlight is the Clone, which allows people to sit at a table to see five clones of themselves, while the Ames Room, a particular Instagram-friendly spot, enables two guests to shrink or grow depending on their position in a life-size optical illusion that plays on depth distance and varying sizes.
But Howard Lee is not the only artist to stir attention with his optical illusions. In our High Five ranking, we present other artists like him.
The authors of this book are experts in brain training, particularly cognitive sciences and they have created a fascinating look at a range of optical illusions. The book is divided into five sections covering light, lines and space, motion, the brain, and experiments.
Visitors can explore the remarkable optical illusions of colored gems during an hourlong program at 2 p.m.
The Trick Eye Museum, situated in a back alley bustling with street vendors peddling food and accessories in the city's Hongdae (Hongik University) area, brings paintings to life with optical illusions.
The museum, brought to Oman by Global Development and Investment, is the first of its kind in the region and includes the largest single collection of optical illusions in the Middle East.
The museum houses more than 70 exhibits that mostly use optical illusions, including holograms, to produce an interactive and educational experience.