{"knowledge_schema": {"broad_category": "Physics \u2192 Optics \u2192 Relativity", "refinement": "This problem involves the behavior of light as it travels through a medium (glass) that is in motion relative to an observer.", "specific_scope": "The focus is on determining the speed of light in a moving medium (glass) as observed from a stationary laboratory frame, using the principles of special relativity and the properties of light in different media.", "goal": "Calculate the speed of light in glass relative to the observer in the laboratory frame, considering the index of refraction and the velocity of the glass."}, "summary": "This problem examines how the speed of light in a moving medium (glass) is perceived by an observer in a laboratory frame. By applying the principles of special relativity, we can derive the speed of light in the moving glass relative to the observer. The correct answer is derived from the formula that accounts for the index of refraction and the velocity of the glass, resulting in the expression (1+n*v)/(n+v). This highlights the interaction between light propagation and relative motion."}