On 14 November 1908, Albert Einstein presented his revolutionary quantum theory of light, a milestone that transformed the scientific understanding of energy and matter.
Building on Max Planck's work on black-body radiation, Einstein proposed that light could exist as discrete packets of energy, or quanta, later called photons.
This radical idea challenged classical wave theories of light and laid the groundwork for quantum mechanics, profoundly influencing the study of physics and technology, from atomic theory to the development of lasers and modern electronics.
