Go ahead - hit it hard!
Using two eyes gives you depth perception.
You can see the spring, but you can't touch it.
Calculate the weight of a car using just a ruler and a tire pressure gauge.
Use a lamp and a grease spot to estimate the power output of the sun.
Fingerprints for light sources.
Whirling water creates a tornado in a bottle.
You may be surprised at the results of this "wimpy" workout.
Find out why wind resistance is a big drag for bicyclists, and use our calculator to estimate drag for yourself.
How do you stop and steer a bicycle? What forces keep the bicycle from falling over?
A soap film becomes an ever-changing work of art.
If you vibrate something at just the right frequency, you can get a big reaction.
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© 2014 Exploratorium
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