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Demonstrate how different objects vibrate at different frequencies.
With polarized light, you can make a stained glass window without glass.
Imperfect alignment can lead to interesting patterns.
Demonstrate diffraction using a candle and two pencils.
Discover why your favorite cat videos don't leak out of optical fibers.
Create giant bubbles!
Air trapped between two pieces of clear plastic produces rainbow-colored interference patterns.
Discover why the sky is blue and the sunset is red.
Make waves without getting wet.
Listen to a beam of light.
Make a record player with a pencil, pin, and paper.
Stare at one color—but see another.
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