This series of photographs documents blackboards at universities and research facilities in Germany ranging from the 19th century to the 1970s. Four photographs of blackboards at Cologne University's department of philosophy with hinged sliding panels - presented as diptychs and triptychs - were produced and first exhibited in 2003. From 2009 to 2012 the series was expanded to depict blackboards in rooms and lecture halls at universities where thinkers such as Martin Heidegger (Freiburg), Theodor W. Adorno (Frankfurt), Carl Friedrich Gauß, Bernhard Riemann or David Hilbert (Goettingen) once taught. Either completely erased or only preserved in fragments the blackboards surfaces contain a palimpsest that has been inscribed on them over time.
University of Cologne (Diptych I), C-print, Diasec (in two parts), 180 x 245 cm, 2003
University of Cologne (Triptych I), C-print, Diasec (in three parts), 180 x 266 cm, 2003
Martin-Luther-University of Halle-Wittenberg, Department of Anatomy, C-print, Diasec (in two parts), 310 x 160 cm, 2012
Justus-Liebig-University of Gießen, Department of Veterinary Anatomy, C-print, Diasec (in two parts), 240 x 310 cm, 2012
Humboldt University of Berlin, Main Building, C-print, Diasec, 156,3 x 125 cm, 2010
University of Bonn, Former Department of Agricultural Sciences I, C-print, Diasec, 80 x 64 cm, 2009
University of Bonn, Main Building, C-print, Diasec, 80 x 64 cm, 2009
Institute of Social Research Frankfurt/ Main, Adorno Library, C-print, Diasec, 156,3 x 125 cm, 2009
Institute of Social Research Frankfurt/ Main, Room I, C-print, Diasec, 80 x 64 cm, 2009
University of Freiburg, Council Building III, I, C-Print, Diasec, 125,0 x 156,25 cm, 2009
University of Freiburg, Council Building III, II, C-Print, Diasec, 125,0 x 156,25 cm, 2009
University of Göttingen, Department of Mathematics I, C-print, Diasec, 80 x 64 cm, 2009
University of Göttingen, Department of Mathematics II, C-print, Diasec, 80 x 64 cm, 2009
University of Greifswald, Department of Psychology, C-Print, Diasec, 125 x 156,3 cm, 2009
University of Hamburg, Department of the Universities History, C-print, Diasec, 156,3 x 125 cm, 2010
Ruprecht Karl University of Heidelberg, New University, C-print, Diasec, 80 x 64 cm, 2009
Christian-Albrechts University of Kiel, Department of Prehistoric Archaeology, C-print, Diasec, 64 x 80 cm, 2010
University of Leipzig, Department of Education, lecture rooms 30-41, C-prints, Diasec, each 80 x 64 cm, 2011
University of Marburg, Department of Art History, C-Print, Diasec, 125 x 156,3 cm, 2009
University of Marburg, Former University Polyclinic for Women, C-Print, Diasec, 64 x 80 cm, 2009
University of Munich, Main Building, C-Print, Diasec, 64 x 80 cm, 2010
Eberhard Karls University of Tübingen, Old Physics Building, C-Print, Diasec, 64 x 80 cm, 2009
Annely Juda Fine Art, London, 2010
Museum of Art and Cultural History, Marburg, 2011
Kunstraum Alexander Bürkle / Paul Ege Art Collection, Freiburg, 2012