Masks and vaccinations are recommended. Plan your visit
Things look oddly colorless in this room because they’re lit by light of only one color—a sodium vapor lamp of the type often used for streetlights.
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.