find a milder climate to improve his deteriorating health. Here he wrote the first Norwegian presentation of the differential geometry used in general relativity. He also found time to write a popular book on Galileo Galilei and his struggle with the church. But his health did not improve and he died there on January 7, 1922. A few weeks later he was buried near his home in Norway. Referanser Norwegian physicists Relativity theorists 1888 births 1922 deaths People from Vestfold