👉 Light, often perceived as invisible, is composed of tiny particles known as photons. These particles are fundamental to our understanding of optics and electromagnetic radiation. Unlike matter, which can take on various forms like solid, liquid, or gas, light exists primarily as these massless, chargeless particles. Photons are the smallest units of light that can travel through space without being absorbed or scattered by matter, making them crucial for phenomena like solar energy and the transmission of information via fiber optics. Despite their lack of mass, photons exhibit properties of both waves and particles, a concept known as wave-particle duality. This dual nature is central to quantum mechanics and explains how light can behave in various ways, from diffracting through crystals to acting as discrete packets of energy in processes like the photoelectric effect.
