Superposition

Diffraction Shadows

Shadows made with laser light have light and dark bands.

Where: Bechtel Gallery 3: Seeing & Listening

Drawing Board

Draw hypnotically flowing patterns with a swinging table, and watch friction cause the patterns to slowly shrink along a spiral path.

Where: Osher Gallery 1: Human Phenomenon

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.

Where: Bechtel Gallery 3: Seeing & Listening