Search Only Images Download this image Portrait of John Tyndall No info available for book source. Image ID: SIL-SIL14-t003-11 Supplied Caption: Portrait of John Tyndall. Lithograph by Rudolf Hoffmann, fl. ca. 1840. After Maull & Polybank. Tags: physics, Tyndall, John (1820-1893) Categories: Science Collection(s): Scientific Identity No Copyright - United States Request copy of image How can I use this image?