Finding the Nazi ideology appealing for aesthetic reasons—and in line with his idealist stance on the philosophy of science—Jordan joined not only the Nazi Party in 1933, but also the Brownshirts, Hitler’s paramilitary storm troopers. And other physicists, like Johannes Stark and Philipp Lenard, had been Nazis even before Hitler came to power, and applied Hitler’s racial “philosophy” to physics, declaring relativity and quantum theory to be “Jewish physics.”
