👉 Largely-light particles, often referred to as photons, are fundamental constituents of light and electromagnetic radiation. These particles are incredibly small, typically on the order of about 10^-28 meters, and have no mass when traveling at the speed of light in a vacuum. Despite their minuscule size, they carry a significant amount of energy and momentum, which is why they can exert pressure on objects—a phenomenon known as radiation pressure. Photons are the quanta of the electromagnetic field, meaning they represent discrete packets of energy, each carrying an energy proportional to the frequency of the light they represent (E = hν, where E is energy, h is Planck's constant, and ν is frequency). This particle nature of light explains many optical phenomena, from the photoelectric effect to the behavior of lasers, highlighting their crucial role in both classical and quantum physics.
