👉 Light particles, also known as photons, are fundamental constituents of light and other electromagnetic radiation. These particles are incredibly small, with masses that are negligible compared to those of atoms or molecules. Despite their minuscule size, photons carry energy and momentum, which are essential for various physical phenomena. They travel at the speed of light in a vacuum, approximately 299,792 kilometers per second, and exhibit both wave-like and particle-like properties, a concept known as wave-particle duality. This dual nature is a cornerstone of quantum mechanics, explaining how light can behave as both a continuous wave and discrete packets of energy (photons). Photons are crucial in processes such as photosynthesis, where they transfer energy to chlorophyll, and in the photoelectric effect, where they eject electrons from metals, demonstrating their particle-like behavior.