Keywords: Composite sphere by Ehrenfried Walther von Tschirnhaus, c. 1700, divided into pieces by seven straight cuts and additional black lines - Mathematisch-Physikalischer Salon, Dresden - DSC08148.JPG en Exhibit in the Mathematisch-Physikalischer Salon Zwinger Dresden Germany This artwork is old enough so that it is in the public domain Photography was permitted in the museum without restriction 2013-12-08 07 59 56 own Daderot other versions PD-old-70 cc-zero Uploaded with UploadWizard Collections of Mathematisch-Physikalischer Salon Zwinger Dresden Ehrenfried Walther von Tschirnhaus |