Ernst Gräfenberg Ernst Gräfenberg Ernst Gräfenberg (September 26, 1881 in Adelebsen near Göttingen, Germany – 28 October 1957 in New York City, United States) was a German-born physician (medical doctor) and scientist. He is known for developing the intrauterine device (IUD), and for his studies of the role of the woman's urethra in orgasm. The G-spot is named after him. Gräfenberg studied medicine in Göttingen and Munich, earning his doctorate on 10 March 1905. He began working as a doctor of ophthalmology at the university of Würzburg, but then moved to the Department of Obstetrics and Gynaecology at the University of Kiel,
Ernst Thälmann the Nazis. In 1935 the former town of Ostheim in Ukraine was renamed Telmanove (Donetsk Oblast). After 1945, Thälmann, and other leading communists who had been killed, such as Rosa Luxemburg and Karl Liebknecht, were widely honoured in East Germany, with many schools, streets, factories, etc., named after them. Many of these names were changed after German reunification, but streets and squares named after Thälmann remain in Berlin, Hamburg, Greifswald and Frankfurt an der Oder. The East German pioneer organisation was named the Ernst Thälmann Pioneer Organisation in his memory. Members pledged that "Ernst Thälmann is my role model ...