His position at the former ended when it fell in the Russian sector at the close of World War II, but he achieved emeritus status at the latter in 1955 (by the time already known Technische Universität Berlin).
[1] After receipt of his doctorate, Westphal became an assistant to Heinrich Rubens at the Friedrich-Wilhelms-Universität (FWU), where he researched thermal radiation and electric discharges in gases.
From 1935, at the THB, he was substitute head of the physics department, which Hertz had been forced to vacate due to his Jewish background.
[2][3][4] In 1955, Westphal achieved emeritus status as ausserordentlicher Professor of physics at the Technische Universität Berlin.
He was also the editor of Volumes 12 through 17 of the Handbuch der Physik, of the encyclopedia Physikalisches Wörterbuch, and of the series Die Wissenschaft.