The idea around fugacity characterises the WBS 70 series by Micha Otto (1980 in Berlin). While travelling through Japan he started to think about the lifespan of sunlight. Is it possible to revive the past light of the sun with its transitory traces? As a native East Berliner growing up in a “Plattenbau” aka “WBS70” (a type of dwelling that was built in the German Democratic Republic using slabs), the artist uses a self-constructed small size architectural model for this series. He places the model on light-sensitive paper and meticulously simulates the progression of the sunbeams at certain times of the day with artificial light. Through this process Micha creates unique photograms that visualise the course of the sun at the place of his own past.