👉 In physics, "semidarkness" refers to a state of darkness that is similar to blackness but not quite as dark. It occurs when light cannot penetrate through the layers of matter in an object or material without being absorbed by the object itself. The term comes from the Greek word "semis," which means "parts" or "several." In this context, it refers to a state where there is no complete darkness but only partial visibility due to the presence of light-absor
