Topic: the kaleidoscope

The Kaleidoscope Kaleidoscopes are made with two or more mirrors. Light reflecting between these mirrors produces multiple virtual images of stunning beauty. Three front-surface mirrors are set together to form an equilateral triangle with angle  60°-60°-60° Standard, household mirrors have a protective layer, such as glass, covering the reflective surface. First- or front-surface mirrors do not have a heavy protective surface.The elimination of a protective surface simplifies the optics! ...