Julius Ruska
Ferdinand Julius Ruska ( born February 9, 1867 in Buhl, † February 11, 1949 in Schramberg ) was a German Orientalist, science historian and educator.
Life and work
Julius Ruska, was born as the son of Ferdinand Ruska (1826-1901), teacher in Grafenhausen, Buhl, and Julie Ruska (1832-1890), born in Saas.
He attended grammar school in Rastatt, and studied from 1884 at the Universities of Strasbourg, Heidelberg and Berlin. First, from 1889 to 1910 worked as a teacher of mathematics and natural sciences at the Elector Friedrich -Gymnasium in Heidelberg, he began the study of ancient Near Eastern languages , with the aim to explore the history of science in Islam. 1895 was followed by his doctorate in philosophy with the work The Quadrivium of Severus bar Sakku 's book of Dialogues. In the years 1908-1913 was Ruska editor of The Educational Archives.
For the final editing and publication of the work The Gospel of John, according to the Syrian found in the Sinai monastery Palimpsesthandschrift his 1909 deceased father Adalbert Merx is Ruska was release one year from the school system. In 1911 he qualified as a professor of Semitic philology with the work Stone book of Aristotle. In 1915 he was appointed associate professor at the University of Heidelberg.
1921 Ruska discovered a copy of the work of the secret mysteries of living in the Middle Ages Persian physician and alchemist Rhazes (Al- Razi, Abu Bakr Muhammad ibn Zakariya ).
In 1924 Ruska, the Institute of History of Natural Science of the port Home Foundation in Heidelberg. From 1927 he was an honorary professor at the University of Berlin and director of the newly established Research Institute for History of Science. Followed in 1931 by a merger of the Institute in the new Institute for the History of Medicine and the natural sciences. Ruska headed the Department of History of Science and worked together with the physician and historian of science Paul Diepgen (Head of Department of History of Medicine). 1938, his retirement.
Ruska's best-known work is the publication of and commentary on the Emerald Tablet (1927 ) and the Turba Philosophers ( 1931). 1917 appeared to be the oldest Arab algebra and arithmetic.
During the bombing of Berlin Julius Ruska moved on with his wife Elisabeth to the parents of his son Ernst Ruska to Schramberg in the Black Forest, where he lived until his death.
Julius Ruska had seven children with his wife Elizabeth, including the aforementioned Ernst Ruska (1906-1988, Nobel Laureate in Physics) and Helmut Ruska (1908-1973, pioneer of electron microscopy). He was also the father in law Bodo von Borries ' (1905-1956), father of another electron.