👉 Light particles, or photons, are fundamental entities that constitute electromagnetic radiation, including visible light. These particles are massless and travel at the speed of light in a vacuum, approximately 299,792 kilometers per second. Photons are the quanta of light energy, meaning they carry discrete packets of energy proportional to their frequency, as described by Planck's relation (E = hν). Each photon has a specific wavelength and frequency, which together determine its color; shorter wavelengths correspond to higher frequencies and thus bluer colors, while longer wavelengths correspond to lower frequencies and redder colors. Despite their massless nature, photons exhibit both wave-like and particle-like properties, a duality central to quantum mechanics. They interact with matter through processes like absorption, emission, and reflection, playing crucial roles in phenomena ranging from photosynthesis to the operation of solar panels and optical communications.
