Schwarz chronicles the idea, the background, the various drafts and the completion of this impressive installation in the baroque, profane-use Dominican church in Münster in minute detail. The Foucault's Pendulum, built according to the artist's own vision, is a scientific instrument made of a 48 kg matt, reflective metal sphere that hangs on a 28.75-metre-long wire above a graduated disk made of 380-million-year-old stone. Four panes of glass, each 600 x 134 cm, enamelled in grey on the back, and reflective on the front, are mounted on the sides of the crossing in two pairs at a slight angle.
The book presents Richter's installation as a Gesamtkunstwerk, in which space and light, stillness and movement, architecture and (glass) images, past and present, aesthetic experience and scientific research are brought into relation with each other.