👉 The anniversary of light particles, or photons, is a fascinating milestone in the history of physics. While light has been understood in various forms since ancient times, the modern concept of light as a particle emerged with Albert Einstein's explanation of the photoelectric effect in 1905. This groundbreaking work suggested that light, rather than being a continuous wave, also behaves as discrete packets of energy, now known as photons. Each photon carries a specific amount of energy proportional to its frequency, encapsulated in the equation E = hf, where E is energy, h is Planck's constant, and f is frequency. This particle-like behavior of light has been crucial in explaining phenomena such as the photoelectric effect, where electrons are emitted from a material when light of sufficient frequency shines on it. Today, the dual nature of light—both wave and particle—continues to be a cornerstone of quantum mechanics, illustrating the complex and often counterintuitive nature of the universe at its most fundamental level.
