How do rainbows form? It’s all about light waves, water, and angles—and that includes the angle from which you see one.
The Montreal-based band Suuns released a new music video that can only be viewed with unfocused eyes.
In the mid-1800s, John Henry Pepper was a superstar in science demonstrations. Then he helped usher in a dramatic special effect that left Victorian London awestruck.
The biggest fad of 1994 was an optical illusion that had people staring at abstract images and getting upset when nothing happened.
This hidden image puzzle from the Hungarian artist Dudolf contains a secret mouse in a crowd of squirrels.