Thatcher Effect Optical Illusion

65 votes, average: 4.38 out of 565 votes, average: 4.38 out of 565 votes, average: 4.38 out of 565 votes, average: 4.38 out of 565 votes, average: 4.38 out of 5 (65 votes)

The Thatcher effect or “Thatcher illusion” is a phenomenon where it becomes difficult to detect changes in an upside down face, despite identical changes being obvious in an upright face. It is named after British former Prime Minister Margaret Thatcher on whose photograph the effect has been most famously demonstrated (this illusion was originally created [...]

June 19, 2012 with 29 Comments

Full Article »