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Diffraction Shadows
Shadows made with laser light have light and dark bands.
Drawing Board
Draw hypnotically flowing patterns with a swinging table, and watch friction cause the patterns to slowly shrink along a spiral path.
Soap Film Painting
Soap film hits the big time at this exhibit, featuring a giant square soap bubble the size of a picture window. The cascading colors you see here arise from overlapping light waves that reflect from the front and back surfaces of the soap film—a phenomenon called interference.
