How a century-long argument over light’s true nature came to an end
Why it matters: The resolution of this debate solidifies a foundational principle for quantum theory and future physics research.
- Albert Einstein and Niels Bohr famously disagreed on whether light is a wave or a particle, a core argument in early quantum theory.
- Karmela Padavic-Callaghan concludes that the long-standing debate over light's true nature has been settled once and for all.
A century-long debate between quantum theory pioneers Albert Einstein and Niels Bohr regarding the fundamental nature of light—whether it behaves as a wave or a particle—has finally been resolved. Columnist Karmela Padavic-Callaghan reports that this foundational argument, central to the development of quantum mechanics, is now definitively settled.
