His interest and ability were beyond what Frankfurt could offer and he was advised to go to Münich where, in 1926, he began studying with the legendary Arnold Sommerfeld .
Kanyang interes at kakayahan ay lampas sa kung ano ang Frankfurt ay nag-aalok at siya ay ipinapayo upang pumunta sa Munich kung saan, sa 1926, siya ay nagsimulang pag-aaral sa maalamat Arnold Sommerfeld.