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Dirk CosterDutch physicist
Date of Birth: 05.10.1889
Country:  Netherlands |
Content:
Early Life and Education
Nicholaas Hendrik Diederich van Leeuwen was born in Amsterdam as the third child of a working-class family. He graduated from a teacher training college in Haarlem in 1908 and worked as a teacher until 1913. Concurrently, he attended lectures at Leiden University, where Paul Ehrenfest greatly influenced him. He ultimately earned his doctorate from Leiden University in 1916.
Academic and Research Career
From 1916 to 1920, van Leeuwen served as an assistant to Willem de Haas at the Delft University of Technology. He then worked with Manne Siegbahn at the University of Lund from 1920 to 1922. In 1922, he returned to Leiden University for his doctoral dissertation.
After a stint at the Niels Bohr Institute in Copenhagen in 1922-23, van Leeuwen accepted a professorship at the University of Groningen in 1924. His scientific contributions focused on atomic and nuclear physics, X-ray spectroscopy, and neutron physics. Notably, in 1923, he co-discovered the element hafnium with Dirk Coster.
Humanitarian Endeavors
During the Nazi occupation of Germany, van Leeuwen played a crucial role in helping Lise Meitner escape to Sweden. He remained active in rescuing Jews throughout World War II.
