👉 Light particles, often referred to as photons, are fundamental entities that constitute light and other forms of electromagnetic radiation. These particles are incredibly small, typically on the order of approximately \(10^{-35}\) meters, far smaller than any atom or molecule. Despite their minuscule size, light particles carry significant energy and can travel through a vacuum at an astonishing speed of about 299,792 kilometers per second, which is nearly the speed of light in a vacuum. Unlike matter particles, light particles do not have mass but possess both energy and momentum. They are described by quantum mechanics and exhibit wave-particle duality, meaning they can behave as both waves and particles depending on the experimental context. This dual nature is a cornerstone of quantum physics, illustrating how light can display properties of waves (such as interference and diffraction) and particles (such as discrete energy packets). In everyday applications, light particles are crucial in technologies ranging from fiber optics and lasers to solar panels and medical imaging.
