Spectrum Window Everyone loves bubbles, and the Spectrum Window exhibit invites you to experiment with a soap-film window. You'll see a horizontal rod suspended by vertical wires at its ends. Slide the rod down into a container of soap solution and raise it back to the top. Stripes of colors begin to form and flow as gravity pulls the soap film down.
Air currents make the film billow in and out.
Switch from a white light source to a yellowish sodium light. Because the soap film acts like a prism to break light into its component colors, you'll see a very different result with the yellow light. Light fixtures should be focused to bounce light off the white wall onto the bubble sheet. Consumable bubble fluid should be refilled daily depending on visitor traffic.