Learn with us online while the Exploratorium is temporarily closed. You can help us reopen—donate today.
Use index cards to show how light plus light equals dark.
Light plus light equals dark.
by Paul Dancstep • August 25, 2015
Do prime numbers "feel" different than the other numbers?
Compare the brightness of two light sources with an oil spot on a white card.
Make dendritic diversions and bodacious branches.
Track down elusive boron and its place in the periodic table.
Cameras taught us the math of vision—find out how.
Get Bach to the fundamentals.
Surprisingly, a flat panel rolls smoothly on non-circular rollers.
Listen to the rhythm of falling weights.
The Doppler effect causes the “neeeeeoowwm” sound of cars.
Rotating water has a curved surface.
(Embarcadero at Green Street)
San Francisco, CA 94111
Get at-home activities and learning tools delivered straight to your inbox