👉 Pe, often associated with the broader concept of quantum mechanics and particle physics, can be understood as a colloquial term for photons, which are the fundamental particles that make up light. Photons are massless, electrically neutral particles that carry energy and momentum. They are the quanta of the electromagnetic field, meaning they are the smallest units of light that can exist independently. In essence, light particles, or photons, are the building blocks of electromagnetic radiation, including visible light, ultraviolet, X-rays, and gamma rays. These particles travel at the speed of light in a vacuum and exhibit both wave-like and particle-like properties, a duality central to quantum mechanics. Photons interact with matter through various processes, such as absorption, emission, and scattering, playing crucial roles in phenomena ranging from photosynthesis to the functioning of electronic devices.