👉 Light particles, also known as photons, are fundamental entities that constitute light and other forms of electromagnetic radiation. These particles are massless, meaning they have no rest mass, and they 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, which is determined by their frequency. This concept is encapsulated in Planck's equation, E = hν, where E is the energy of the photon, h is Planck's constant, and ν (nu) is the frequency of the light. Unlike matter particles, photons do not interact with the strong nuclear force or gravity in the same way; they are unaffected by electric and magnetic fields in the same manner as charged particles. Instead, their behavior is primarily governed by electromagnetic interactions. Photons play a crucial role in various phenomena, from the photoelectric effect, where light can eject electrons from a material, to the propagation of light through space and matter, enabling everything from vision to communication technologies.
