context: In September 1932, Unsöld became Ordinarius Professor and Director of the Institute for Theoretical Physics (and Observatory) at the University of Kiel – a position he held until his emeritus status was granted in 1973, after which he remained scientifically active for 15 years.
source: While a student at Munich, Unsöld was one of many of a long line of students who helped Sommerfeld explore and advance atomic theory.
reference_original: Mientras era estudiante en Munich, Unsöld fue uno de una larga lista de estudiantes que ayudaron a Sommerfeld a explorar y avanzar la teoría atómica.
reference_flipped: Mientras era estudiante en Munich, Unsöld fue una de una larga lista de estudiantes que ayudaron a Sommerfeld a explorar y avanzar la teoría atómica.