Werner Heisenberg was born in Würzburg in 1901 the son of Dr. August Heisenberg and his wife Annie Wecklein. In 1920 he began studying physics at the University of Munich under Sommerfeld Wien Pringsheim and Rosenthal. In the winter of 1922–1923 he went to Göttingen to study physics under Max Born Franck and Hilbert. He took his Ph.D. in 1923 and became Born’s assistant. He was then awarded a Rockefeller grant which between 1924 and 1925 allowed him to work at the University of Copenhagen with Niels Bohr.