Gilles Holst Philips Fysics Laboratory in Eindhoven ! Or Nat Lab. In 1909 he became an assistant to Heike Kamerlingh Onnes at Leiden University. At Leiden, it is believed that he was the first to witness the phenomenon of superconductivity. The Gilles Holst Award was first awarded in 1939. He died in Holland at the age of 82. Gilles Holst Gilles Holst (20 March 1886 – 11 October 1968) was a Dutch physicist, known worldwide for his invention in 1932 of the low-pressure sodium lamp. His father was a manager of a shipyard. In 1904 he went to ETH Zurich to study
Tettje Clay-Jolles 1903 when she transferred to the University of Leiden. She was one of the few women who studied physics at the university. There she began her doctoral research on low-temperature physics under Heike Kamerlingh Onnes. She worked on her thesis until December 1908 when she left her studies to devote herself to her family. Clay-Jolles met and fell in love with Jacob Clay, another of Kamerlingh Onnes's students, and in 1908 the two were married. Later that year she left school to focus on her family. She spent the next twelve years raising the couple's three children. In 1920 the