👉 The diameter of light particles, or photons, is extraordinarily small, typically on the order of 200 to 400 nanometers (nm). This minuscule size is a result of light's electromagnetic nature, which allows it to exhibit both wave-like and particle-like properties. Photons are massless and travel at the speed of light in a vacuum, approximately 299,792 kilometers per second. Despite their tiny diameter, photons carry significant energy and momentum, making them crucial for various phenomena, from the photoelectric effect to the bending of light around massive objects. Their small size and masslessness distinguish them from other particles, such as electrons or protons, which have much larger diameters and interact through electromagnetic forces.
