Werner Heisenberg was a German physicist who, in the 1920s, discovered the Uncertainty Principle. This principle states that the more you observe a subatomic particle, the more its properties are in question.
Heisenberg's discovery changed the face of quantum physics and led to many more questions about the nature of reality. He is often quoted as saying, "I am not a wave, I am a physicist!"
Heisenberg's Uncertainty Principle has been applied in many fields, including music, philosophy, and existential dread.