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Real World Problems and Solutions
Hetch Hetchy Regional Water System

Take an exclusive tour of the Hetch Hetchy water system. 

 
 
Science activity that explores the relationship between magnetic fields, voltage, and electrical circuits
Stripped-Down Generator

Shake just right to see the light.

Big and Tall Bikes

Bike builder David Folch builds supersized bikes for supersized riders.

 
Science activity that demonstrates the brightness of two light sources
Oil Spot Photometer

Compare the brightness of two light sources with an oil spot on a white card.

Science activity that demonstrates the chemistry of a battery
Penny Battery

Light an LED with five cents.

Science activity that demonstrates the Doppler effect
Doppler Effect

The Doppler effect causes the “neeeeeoowwm” sound of cars.

Science activity that demonstrates how differently shaped ears affect your hearing
Designer Ears

See how differently shaped ears affect your hearing.

Science activity that demonstrates persistence of vision
Whirling Watcher

Short bursts of moving images produce some interesting effects.

Science activity that demonstrates depth perception
Size and Distance

So close, yet so far away.

Science activity that demonstrates a short circuit
Short Circuit

What happens when you blow a fuse?

Science activity that demonstrates resonant frequencies
Resonator

Explore resonance to discover how objects vibrate at certain frequencies.

Science activity that demonstrates resonant frequencies
Resonant Rings

Demonstrate how different objects vibrate at different frequencies.

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