Speed up your spin.Newton found that an object in motion tends to remain in motion, in a straight line and at a constant speed, unless it is acted upon by a net force. Today, we call this observation ...

Look at the edge of each fresnel prism and note which direction the ridges point. For the next step, you will need to orient both prisms so that the ridges point in the same direction. Lay each prism ...

The mechanism in this Snack is essentially the same as pushing someone on swing. If you pull back on the swing and then let go, it will take a certain number of times per second for the person to ...

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 ...

De-shell the eggs by placing them in a large container so that they touch as little as possible. Add vinegar to cover the eggs (see photo below), and cover the container. Allow the eggs to sit for 24 ...

Look down through the polarizing filter into the cylinder at the light source. Slowly rotate the top filter and notice the color changes in the syrup. As you continue looking through the top filter, ...

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 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, ...

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 ...

The city of San Francisco designated ten Living Innovation Zones (LIZs) as a way to improve the Market Street thoroughfare. The Exploratorium was selected to develop the first LIZ. The City gave us ...