A bizarre play of light: the Apollo capsule in a test chamber surrounded by glowing heating elements. The chamber is a combination of refrigerator and oven: the capsule is tested alternately at high and low temperatures. In: Werner Büdeler: Projekt Apollo - Das Abanteuer der Mondlandung. Bertelsmann Sachbuchverlag, 1969.

A bizarre play of light: the Apollo capsule in a test chamber surrounded by glowing heating elements. The chamber is a combination of refrigerator and oven: the capsule is tested alternately at high and low temperatures. In: Werner Büdeler: Projekt Apollo - Das Abanteuer der Mondlandung. Bertelsmann Sachbuchverlag, 1969.