The Exploratorium is temporarily closed. Explore our online resources for learning at home.
Not all shadows are black.
Consider the combinations of colored light that illuminate our world.
See yourself as others see you.
This reflector has you cornered: It always sends light back in the direction from which it came.
How many colors can you make by mixing red, green, and blue light?
Discover why your favorite cat videos don't leak out of optical fibers.
This curved mirror distorts your reflection in surprising ways.
See yourself as others see you in this cylindrical mirror.
Submerge yourself in underwater color perception.
Demonstrate diffraction using a candle and two pencils.
Shadows made with laser light have light and dark bands.
Color is in the eye of the beholder.
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