Search Only Images Download this image Portrait of Johann Christian Poggendorff No info available for book source. Image ID: SIL-SIL14-p005-01 Supplied Caption: Portrait of Johann Christian Poggendorff. Photograph [carte de visite] , published by J. C. Schaarwaechter. After J.C. Schaarwaechter. Tags: physics, Poggendorff, Johann Christian (1796-1877) Categories: Science Collection(s): Scientific Identity No Copyright - United States Request copy of image How can I use this image?