This afternoon I headed to We The Curious with my daughter for a summer holiday treat. The highlight was the giant sheet of bubble you can make there by dragging a sort of rollerblind contraption through a soapy solution. The result is a vertical bubble surface that flows and swirls with irridescant eddies. When you blow at the surface is distorts out of plane, like a bullesye from a spun pane of glass, or a portal to another dimension.

And then without warning, ping, it disappears without a trace.