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 ...

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 ...

Make models of the earth and moon Make a model Earth by rolling out a small ball of green or blue clay. The ball should be between ½ to ¾ inches (about 1.5 to 2 cm) in diameter (click to enlarge photo ...

Put a cap eraser on each end of the craft stick. Trim an index card so it fits in the space between the two erasers on the stick. Staple the card to the craft stick. It should stick out about 2 inches ...

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 ...

Tired of electrostatic experiments that just won’t work? This experiment will produce a spark that you can feel, see, and hear. Rub a foam plate with wool to give it a large electric charge, then use ...

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 ...

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 ...

It takes less energy to bicycle one mile than it takes to walk a mile. In fact, a bicycle can be up to 5 times more efficient than walking. If we compare the amount of calories burned in bicycling to ...

Listen up: You’re about to take a sonic journey around the planet. Don’t miss the stunning West Coast premiere of The Great Animal Orchestra. This immersive audiovisual art experience celebrates the ...

At the Exploratorium, we’re passionate about curiosity-driven learning, science, and art. We create extraordinary exhibits, projects, programs, and events that ignite curiosity and cultivate the ...

One of the most exciting exercises I ever did as a kid was to make a scale model of the Solar System. Most of the pictures in my books made the distance between planets seem small and easy to travel.