Bubble Capsule

Step into the platform. Reach for the rope. Pull the rope slowly until you form a bubble capsule. Notice the shape of the bubble capsule. This exhibit shows the minimal surfaces generated by the surface tension (forces of attraction between soapy water molecules) in soap bubbles. Normally, water cannot be stretched into a thin film. Soap reduces its surface tension. A soap film always pulls in as tightly as it can, just like a stretched balloon.

Ring Bubbles

Make the biggest bubble and let it float around. Dip the ring in the soap solution. Wave the ring through the air to make a bubble. Observe the bubble as it floats in the air.