Niels Bohr (philosopher)

Niels Bohr was a Danish philosopher and physicist known for his foundational work in understanding quantum theory. He proposed that atomic and subatomic particles behave in ways that challenge classical physics, emphasizing that their properties are not definite until observed. Bohr introduced the idea of complementarity, meaning particles can display different, seemingly contradictory behaviors (like wave or particle), depending on how they are measured. His insights helped shape modern physics and our understanding of the nature of reality at the smallest scales, highlighting that observation plays a crucial role in determining the behavior of quantum systems.