Werner Karl Heisenberg Typed Letter Signed.

Rare original typed letter signed by German theoretical physicist Werner Karl Heisenberg to Turkish theoretical physicist Behram Kursonoglu. One page, on Max-Planck-Institut letterhead, and dated October 16, 1962. The letter is regarding Heisenberg thanking Kursonoglu for sending his textbook on modern quantum theory for his students to study. Boldly signed by Werner Karl Heisenberg. The recipient, Behram Kurşunoğlu (1922–2003), was a Turkish theoretical physicist whose career made him one of the most internationally connected and institutionally consequential scientists produced by the Republic of Turkey in the twentieth century. Born in the small town of Çaykara on Turkey’s border with Georgia, he was sent on scholarship to the University of Istanbul, where he graduated in 1945, before proceeding on a Turkish government scholarship to the University of Edinburgh — his arrival in London in August 1945 coinciding with the news of the bombing of Hiroshima, an event he later recalled as defining his sense of the moral stakes of theoretical physics. He pursued postdoctoral work under Paul Dirac at Cambridge — a mentorship that shaped his lifelong preoccupation with unified field theory — before joining the University of Miami as a professor of physics in 1958 and founding its Center for Theoretical Studies in 1965, which he directed until 1992 and which he built into a genuine mecca for theoretical physics, hosting Nobel laureates including Dirac, Lars Onsager, and Robert Hofstadter. He organized the celebrated annual Coral Gables Conferences beginning in 1964, which brought together leading scientists from across the world and established South Florida as an unlikely but genuine node in the international network of theoretical physics. He also participated in the discovery of two different types of neutrinos in the late 1950s, served as a founding member of the Turkish Atomic Energy Commission, and received the Turkish Presidential Science Prize in 1972. His most significant scholarly contribution — his generalization of Einstein’s unified field theory incorporating a fundamental length parameter — occupied him throughout his career and reflected a characteristically ambitious attempt to reconcile gravitation with the quantum world that few of his contemporaries were willing to pursue with equal persistence. In near fine condition with mail folds and creasing. The piece measures 8 inches by 8 inches.