optical illusion - Trivia, Quizzes, and Brain Teasers | Mental Floss

Rainbow Disconnection: Why No Two People Can Ever See the Same Rainbow

Two people can, however, look at the same photo of a rainbow.

Rainbow Disconnection: Why No Two People Can Ever See the Same Rainbow

The Magician and the Suffragette: The Strange History of Sawing a Woman in Half

The magician P. T. Selbit performing a sawing a woman in half trick.

The Magician and the Suffragette: The Strange History of Sawing a Woman in Half

Watch an Orange Square Appear to Change Colors in This Optical Illusion Video

This background is basically an invitation for your brain to play tricks on you.

Watch an Orange Square Appear to Change Colors in This Optical Illusion Video

Can You Spot the Hidden Images in This Magic Eye Music Video?

GeorgePeters/iStock via Getty Images

Can You Spot the Hidden Images in This Magic Eye Music Video?

How 'Pepper's Ghost' Became the Toast of Victorian London

People in Victorian London were amazed by a stage effect perfected by John Henry Pepper that had them seeing a ghost.

When Magic Eye Pictures Ruled the World—and Frustrated Millions of People

In the 1990s, millions of people spent a lot of time staring at images like this one.

Can You Spot the Mouse Hiding Among the Squirrels?

Dudolf

Can You Spot the Sleeping Bat Hiding Among the Tools?

Burton Roofing