1875 – He was born on the 26th of March in Danzig, Germany.
1897 – He studied under Max Planck and he graduated.
1900 – He worked as Planck’s assistant.
– He worked at Gottingen as a privatdozent, an unpaid lecturing position for nine years.
1902 – He developed his theory of the electron.
1909 – He travelled to the United States to accept a position at the University of Illinois.
– He was later invited to Italy by Tullio Levi-Civita, and found work as the professor of
rational mechanics at the University of Milan, for five years.
1921 – He worked at Stuttgart as the professor of physics at Technische Hochschule.
– He accepted the position of chair in Aachem before he started his work there he was
diagnosed with a brain tumor.
1922 – He died on the 16th of November in Munich, Germany.