"August Hagenbach (22 December 1871 – 8 November 1949) was a Swiss physicist working in spectroscopy.
He was the son of physicist Eduard Hagenbach-Bischoff and obtained his Ph.D. in 1894 at the University of Leipzig with a thesis titled "Über Thermoelemente aus Metallen und Salzlösungen" under the supervision of Gustav Heinrich Wiedemann.
In 1906 he took over the chaired professorship at the University of Basel earlier held by his father.
In 1926 he was rector of the University of Basel.
One of his students was Ernst Stueckelberg." - (Wikipedia (en) 22.11.2020)
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