Your pupil changes size to control how much light enters your eye.
A pendulum moving in two directions creates beautiful designs.
Make multiple images of yourself.
A magnet falls more slowly through a metallic tube than it does through a nonmetallic tube.
Start your own electric flea circus!
What's your (electrical) sign?
See yourself become someone else.
It's all done with mirrors.
A magnet exerts a force on a current-carrying wire.
When you overlap materials with repetitive lines, you create moire patterns.
A snack version of Mirror Mirage.
Big swings from little pulls grow.
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© 2014 Exploratorium
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