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Watch the rise and fall of hot and cold fluids.
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.
Illuminate your understanding of how batteries work.
Light an LED with just five cents.
Shake it 'til you break it (or not).
Shake just right to see the light.
Use your breath to make a visible change in an electric circuit.
Listen to a beam of light.
Different kinds of light can be used to study life.
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