In English, a mirror is an object with a smooth surface and can reflect light. At first, the ancients used polished bronze as mirrors. There are two kinds of flat mirror and curved mirror. Flat mirrors are often used by people to tidy up their appearance.
Curved mirrors can be divided into concave mirror and convex mirrors, which are mainly used as dressing mirrors, furniture accessories, architectural decoration parts, optical instruments, solar cookers, reflectors for headlights and searchlights, reflecting telescope, car rearview mirrors, etc.
In science, mirrors are often used in telescopes, lasers, industrial instruments and other instruments. Metal devices with regular reflective surfaces and glass or metal products with metal reflective films are often inlaid with metal, plastic or wooden frames.