Jacob Goudsmit studied medicine in Amsterdam and sat for his medical finals on 12 February 1919. He took his PhD degree in Amsterdam on 17 December 1920 for his thesis 'Experimental investigations with trypan blue in connection with the intraspinal treatment of lues nervosa.' Jacob Goudsmit specialized in internal medicine. In 1922 he opened a practice at 41 Jan Luykenstraat in Amsterdam. He also …