German physicist who invented the betatron in 1934, and done the Soviet atomic bomb task after World Battle II. He later on came back to East Germany through the Cool War and continuing to operate in nuclear physics. He researched chemistry and physics from 1922 to 1927 in the College or university of Kiel, and received a doctorate in 1929. He offers released many books including Probleme und Ergebnisse der Elektro- und Magnetohydrodynamik in 1961. His family members originated from Kiel. He’s a German scientist like Albert Einstein.