A mirror image (in a plane mirror) is a reflected duplication of an object that appears almost identical, but is reversed in the direction perpendicular to the mirror surface. As an optical effect, it results from specular reflection off from surfaces of lustrous materials, especially a mirror or water. It is also a concept in geometry and can be used as a conceptualization process for 3D structures.
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In this Dossier
Plane mirror in the context of Heliostat
A heliostat (from Ancient Greek ἥλιος (hḗlÄos) 'sun' and στατός (stătós) 'standing')is a device that reflects sunlight toward a target, turning to compensate for the Sun's apparent motion.The reflector is usually a plane mirror.
The target may be a physical object, distant from the heliostat, or a direction in space. To do this, the reflective surface of the mirror is kept perpendicular to the bisector of the angle between the directions of the Sun and the target as seen from the mirror. In almost every case, the target is stationary relative to the heliostat, so the light is reflected in a fixed direction. According to contemporary sources the heliostata, as it was called at first, was invented by Willem 's Gravesande (1688–1742). Other contenders are Giovanni Alfonso Borelli (1608–1679) and Daniel Gabriel Fahrenheit (1686–1736). A heliostat designed by George Johnstone Storey is in the Science Museum Group collection.
Plane mirror in the context of Distorting mirror
A distorting mirror, funhouse mirror or carnival mirror is a popular attraction at carnivals and fairs. Instead of a normal plane mirror that reflects a perfect mirror image, distorting mirrors are curved mirrors, often using convex and concave sections to achieve the distorted effect. Because of their distorting properties, they are sometimes featured in fiction as a literary device, such as in Hans Christian Andersen's 1844 fairy tale The Snow Queen.
Distorted mirrors are used as a metaphor for describing Wikipedia, personalized medicine and social media which rather than reflecting society, tend to distort our perceptions of reality and social norms.