If you reach up and feel around your eye, you’ll feel the bone of your skull. There’s fat surrounding your eyeball to keep it from bumping up against the bone and getting bruised. In the cow’s eye ...

Download the PDF file containing the cipher wheels. Copy and cut out the two wheels. Place the smaller wheel on top of the larger wheel and rotate them so your "key letter" on the small wheel is ...

Make a simple mini-motor.Give the coil a spin to start it turning. If it doesn’t keep spinning on its own, check to make sure that the coil assembly is well balanced when spinning, that the enamel has ...

When you use your extended hand to just obscure the height of a distant object, that object sweeps out, or subtends, the same angle as your extended hand does on your eye’s retina. Two similar ...

Check out our cinema arts, evening, member, and other upcoming and ongoing events.

Here at the Exploratorium, you don’t look at exhibits—you play with them. Dance with your own shadow, levitate, touch a tornado, mix colors and break light apart, stop time, start a conversation, ...

What should I wear? You'll want to wear comfortable clothes. We recommend layers, so that you're ready for whatever San Francisco weather comes your way—sun, fog, or a chilly ocean breeze. Comfortable ...

All light is made up of waves of electromagnetic radiation. A spectroscope spreads each different wavelength to a different position within a spectrum of light. Music is digitally recorded as circular ...

When you removed the cards from one set of bottles, the hot water stayed on top and the cold water stayed on the bottom, with the colors staying pretty much the same. In the other set, however, ...

Projects The Tinkering Studio is primarily an R&D laboratory on the floor of the Exploratorium, but whenever possible we try to share our projects, activities, and developing ideas following an “open ...

Our LEED platinum sustainably designed facility—located in the vibrant heart of the historic Embarcadero at Pier 15—is an unforgettable venue for everything from intimate gatherings to large events.

The liquid crystal displays (LCDs) on most computer monitors and laptop screens polarize the light that comes from them. You can verify this by looking at a LCD screen through one of your polarizers.