Here’s a cow’s eye from the meat company. The white part is the sclera, the outer covering of the eyeball. The blue is the cornea, which starts out clear but becomes cloudy after death. Step 2: ...

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 ...

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 ...

Fill in your weight below in the space indicated. You can enter your weight in any unit you wish. Click on the "Calculate" button. Notice that the weights on other worlds will automatically fill in.

Answers to questions about COVID safety, planning your visit, accessibility, food and more at the Exploratorium's beautiful bayside location at Pier 15, San Francisco.

Science Talk A Tool for Learning Science and Developing Language. Download a printable version. The direct and engaging experiences of hands-on, inquiry-based science draw out students’ sense of ...

The distribution of the mass of an object determines the position of its center of gravity, its angular momentum, and your ability to balance it. Place a lump of clay about the size of your fist ...

Soap films can behave like membranes. Every cell in your body needs to take in nutrients, oxygen, and raw materials and export wastes and other substances—but it’s not just a random traffic jam! A ...

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 ...

Store up an electric charge, then make sparks. 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 ...

Yeast also produces alcohol as it feeds, which is why it is an important ingredient in making beer. In 1857, Louis Pasteur discovered that yeast is a living organism whose activity causes fermentation ...

Measure the efficiency of solar cells as they convert sunlight to power. Solar cells convert light energy into electrical energy. With a few simple tools on a sunny day (or working indoors under a ...