Why did the Nazi movement describe Albert Einstein’s work as “Jewish physics”?

The Nazi movement labeled Albert Einstein’s work as “Jewish physics” as part of a broader campaign of virulent antisemitism and ideological warfare against modern scientific thought.12

By branding relativity and quantum theories as “Jewish,” Nazi-affiliated physicists—most notably Philipp Lenard and Johannes Stark—sought to discredit Einstein’s abstract mathematical approaches, which they contrasted against their own vision of a supposedly “German” or “Aryan” physics. This rhetoric was not based on scientific merit but was a political tool used to purge Jewish scholars from academia and consolidate control over science funding and personnel decisions.32

The Nazis viewed Jewishness as a biological threat to the German people, and this ideology extended to the intellectual realm, where they aimed to eliminate any perceived Jewish influence from German culture and institutions. This campaign included the public denunciation of Einstein, the burning of books, and direct threats to his life, ultimately forcing him to leave Germany permanently.431