👉 In physics, a "brilliantness" is a property that relates to how much light or energy a particle possesses. For example, an electron has a high brilliance because it can absorb and scatter light in its own quantum state. The Brilliance of a Particle refers to the amount of light or energy that a particle possesses based on its quantum state. In other words, it quantifies how many photons or electrons are present in a given state.