The Exploratorium is temporarily closed. Explore our online resources for learning at home.
When the disk is spun, the colors you see are illusions. This effect was popularized in 1894 by toymaker C. E. Benham, who called his spinning disk an “artificial spectrum top."
Where: Bechtel Gallery 3: Seeing & Listening
There are captivating reflections in a box of ornaments.
Where: Osher Gallery 1: Human Phenomenon
Learn about the history of the Tactile Dome, our largest interactive exhibit.
Where: This exhibit is not currently on view.
Pier 15 (Embarcadero at Green Street)San Francisco, CA 94111(415) 528-4444
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