The development of elements that are useful for people is a challenge that researchers and inventors take daily, some tools like the toilets where the main key focus of this article are the mirrors. The mirrors are made of a piece of rock crystal or glass, reflecting light or image projected onto them, is considered a tool of vanity for its virtues reflective. The mirrors start their development in Egypt since 2500 BC, where the invention of the first type of mirror made with bronze led to further developments. The use of mirrors also began to apply to civilizations like Roman, Greek and Etruscan, where the first civilizations created by these mirrors showed a new way to manufacture them. They began to use silver instead of bronze, in order to improve image sharpness. The use of metals like silver mirrors, bronze and copper, made for very limited periods of time, and that environmental factors dull metals.
The mirrors start their use in toilets from the Middle Ages, more specifically in the sixteenth century, with the invention of mirrors, glass and rock crystal, allowed the use of these easily applied to items such as tables and equipment, specially designed to place the mirrors. The mirrors for the late seventeenth and early eighteenth century began to be manufactured in various sizes and shapes, in order to convert an element of vanity to an embellishment of rooms and royal residences. For the nineteenth century the use of mirrors were a major source of decoration used at the time. The adjustment of the mirrors to other items such as automobiles, bicycles, trains and some more specific such as telescopes began to be used from the twentieth century. Today mirrors are a key part in some research such as space, since a major component of the giant telescope mirrors and lenses are developed based on the original mirror. It is proper to note that some researchers as prestigious as Galileo Galilei and Leonardo Da Vinci, during the course of his life mirrors used to develop some of their research.
At present human evolution has led to the mirrors to levels never believed, because the development of various types provided a wide range of them, which are categorized into three main categories: they are: concave mirrors: they are designed semi spherical shape, in order to provide a visual image of greater range of the object or person reflected. Convex Mirrors: this is also developed concave mirrors, with the difference reflecting the exterior design is concave, in order to increase the image directly reflected. Flat Mirrors: They are designed as the name implies so flat that the reflection that this gives, is equal to the element to reflect. In conclusion, the invention of mirrors was a great help for the development of some very important elements in today, which is why it is good to highlight the history, utility and development of this element as used in the daily lives of all people.