👉 Light, often perceived as invisible, is composed of particles known as photons, which are fundamental to understanding its behavior and properties. These light particles, or photons, are massless and travel at the speed of light, exhibiting both wave-like and particle-like characteristics—a duality that is central to quantum mechanics. Photons carry energy and momentum, enabling them to interact with matter through processes like absorption, emission, and reflection. This particle nature of light explains phenomena such as the photoelectric effect, where light hitting a metal surface ejects electrons, and the discrete spectral lines observed in atomic emissions. Thus, the concept of light particles bridges classical and quantum physics, offering insights into both the macroscopic and microscopic worlds.
