How do mirrors work?
Light's Relay Race
How do mirrors work?
You walk up to a mirror and there you are, staring back. Your reflection copies every move — wave your hand, it waves. Stick out your tongue, it sticks out its tongue. But what's actually happening? Is there really another you trapped in the glass?
Light is bouncing off you right now — constantly. Every lamp, every window, every glow sends light rays streaming out in all directions. When those rays hit your face, your shirt, your hands, they bounce off and scatter into the room. That bouncing light is how anyone sees anything at all.
