Energy

Build a rubber-band-powered rolling plastic water bottle.

Plunge into hydraulics with a pair of dueling syringes.

Explore the EcoCenter, San Francisco's only off-grid building.

Measure the efficiency of solar cells.

Measure the brightness of the sun using cooking oil and a white card.

Put your mind to tackling these classic engineering problems.

Turn sound into light and back again.

Learn to measure the efficiency of a solar cell.

Shake it 'til you break it (or not).

Light an LED with five cents.

What happens when you blow a fuse?

Focus the invisible light from an electric heater.

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