All the way back to 6200 BC, and probably before that, humans made mirrors. In Turkey, they polished obsidian; in Egypt, copper. Over at Smithsonian, beloved Boing Boing contributor Clive Thompson explores the technological and cultural history of the mirror. From Smithsonian:
— Read the restDuring the medieval period in Europe, paintings of vice would include women gazing into hand mirrors while the skeletons of demons lurked behind them.
