It all starts at the pane. A flat mirror reflects the world point for point, because light bounces off an even surface at the same angle at which it arrived - one of the oldest laws of optics. Bend the pane into an arc, and the same rays spread out in different directions, so the reflection starts to stretch and shrink. Where does an attraction like this in the playground come from? From the fairground booths of the 19th century, where curved mirrors were set up in a row and passers-by stopped to look at their distorted reflections; from the fairs they moved to amusement parks and funhouses, and at the start of the 20th century Coney Island made them famous.
For this fun to be repeated for years, distorting mirrors in a nursery, school or hospital playground cannot be made of glass. Here the pane is polished stainless steel - it will not shatter or leave sharp shards under children's feet. The frame is galvanised and powder-coated, so rain, frost and sun leave it untouched, and the reflection works without electricity or batteries: just stand in front of the mirror. The equipment works outdoors all year round, winter included, and is covered by a warranty. The manufacturer is EduPlayground, and the distorting mirrors are made in Poland.
Four elements: three decide what the reflection looks like, the fourth holds the pane in place in the playground.