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 Schmutzer Ernst Schmutzer Ernst Schmutzer (born 26 February 1930) is a German theoretical physicist. Ernst Schmutzer was born in 1930 in a small village in western Bohemia, which at that time had been part of Czechoslovakia for slightly more than a decade. By May 1945, when the war ended, he had attended schools in three different local villages. The area was occupied by the Americans on 1 May 1945, and less than a year later the entire German speaking population had been expelled. Schmutzer's schooling continued across the border in Weiden. By the time he passed his school final exams in