⚛️ Niels Bohr revolutionized atomic theory with his 1913 model, showing electrons orbit the nucleus in fixed energy levels, explaining why atoms don't collapse and how they emit light. This breakthrough earned him the 1922 Nobel Prize and laid the groundwork for quantum mechanics.⁠ ⁠ Beyond his atomic model, Bohr developed the complementarity principle - the idea that quantum objects exhibit both wave and particle properties depending on how they're observed. His Copenhagen interpretation became the dominant framework for understanding quantum mechanics, making him a towering figure in 20th-century physics.⁠ ⁠ ⁠ ⁠ #nielsbohr #atomictheory #quantummechanics #quantum #atomicmodel #quantumphysics #physics #mechanics #science