A mirror is a smooth, reflective surface that reflects light. When light hits the mirror, it is reflected in a specific direction, allowing us to see an image of everything in front of the mirror.
Mirrors come in many shapes and sizes: bathroom mirrors, car mirrors, telescope mirrors, or even precision mirrors in scientific equipment. The smoother the surface, the clearer and more accurate the reflected image.
Mirrors are almost always needed in optical setups in research laboratories. This is also the case, for example, when setting up an experiment with individual quantum objects.
