A photon of light is a fundamental particle that constitutes electromagnetic radiation, including visible light. Photons have properties of both particles and waves. They are massless and travel at the speed of light in a vacuum. Photons carry energy and momentum, and they interact with matter through processes such as absorption, emission, and scattering. In essence, photons are the basic units or "packets" of light.. . #lighting #flight #twilightscapes #light #photonatural #highlights #geophys