It Has Been 100 Years since a Quantum Experiment Showed Why We Don’t Fall through Our Chair

The moment I meet Horst Schmidt-Böcking outside the Bockenheimer Warte subway stop just north of the downtown area of Frankfurt, Germany, I know I have come to the right place. After my “Hi, thank you for meeting me,” his very first words are “I love Otto Stern.” My trip on this prepandemic morning in November … Read more