Elisabeth Bormann
Elisabeth Ottilie Marianne Bormann (May 12, 1895 – August 1986) was an Austrian physicist and assistant to Max Born. She was involved in measuring the free path of atoms in gases and the size of molecules. Early life and education 
Bormann was born in Döbling, Austria. She attended elementary and community school in Klosterneuburg. As a child, Bormann was enthusiastic about gymnastics and piano. Bormann was part of the advanced training programme offered by Eugenie Schwarzwald, and finished high school at the Wasagasse grammar school (then KK Staatsgymnasium). After completing her high school training, she enrolled in an undergraduate course in mathematics and the University of Vienna. She remained there for her doctoral research, during which she studied decay fluctuations and was awarded a distinction. Her PhD examiners were Franz S. Exner and Gustav Jäger. Research and career 

In 1919 Bormann joined the Institut für Theoretische Physik, where she worked as an assistant to Max Born. In this capacity, she developed the first atomic beams. Working with Born in 1920, Bormann was the first to measure the free path of atoms in gases and the size of molecules. She also worked with Friedrich Dessauer on the development of X-ray based technologies. Bormann started her independent scientific career at the Siemens-Schuckert, where she studied cable technology. She became a German citizen in 1957. Bormann was involved with the supervision of various physicists, including Wilhelm Heinrich Heraeus. Legacy
In 2019 a plaque was unveiled to record Born and Bormann's discoveries. It will be attached to the former physics building in Robert-Mayer-Straße 2. Select publications

References 

1895 births
1986 deaths
20th-century Austrian physicists
Austrian women physicists
People from Döbling
University of Vienna alumni