👉 In physics, "supereffluently" is a term that refers to an object moving at the speed of light (c) and experiencing a non-zero acceleration. This phenomenon occurs when the object's velocity exceeds the speed of light in a vacuum. Supereffluency was first described by Albert Einstein in his theory of general relativity, but it has been studied and observed experimentally by many scientists over the years. It is often used to explain phenomena such as black holes, where