Professor Hommelhoff was elected to the DPG Parliament, in the course of the DPG Board of Directors election in 2018. The DPG, the German Physical Society, is the largest physical society in the world with over 60,000 members. Its presidents included Albert Einstein, Fritz Haber, Hermann von Helmholtz, Max Planck and Arnold Sommerfeld. It is a very active professional society, which organizes the well-attended spring meetings and publishes the PhysikJournal, an outstanding journal for its members. (For students: the membership fee is only 13€!) Here the link to DPG, here to PhysikJournal (German language only).