Ehrenstein Illusion
This is an optical illusion in which the sides of a square take on a curved shape when placed inside a pattern of concentric circles. The illusion was studied by German psychologist Walter Ehrenstein.
Advertisement
These Mindbending Optical Illusions Will Break Your Brain
The More You Know
- A team of six women programmed the first digital computer.
- A man sued Pepsi claiming he found a mouse in his Mountain Dew. Pepsi attorneys stated that Mountain Dew will dissolve a mouse in 30 days, and showed his can was purchased 74 days after being manufactured.
- "E" is the most common letter and appears in 11 percent of all english words.
- In 2009, Burger King launched a campaign that if you unfriended 10 friends on Facebook, you were entitled to a free Whopper. The person you unfriended would get a message telling them that their friendship is worth less than a Whopper.