About the book: 2021 / Mirror... This is the whole Universe! And although this item is present in every home, it is surrounded by curiosities, mysteries and mysticism. A person is attracted to mirrors from the moment they appear, and it is impossible to explain the nature of this passion. A mirror is one of the most energetically powerful objects. The energy that the mirror contains can change our lives both for the better and for the worse. But, fortunately, a person can control his most unique and amazing invention. We will tell you what its origin is, how folk signs associated with this product arose, and how the scope of using mirrors in our lives has expanded. Today, human existence without mirrors is not possible; they have found wide application in various branches of science and technology. Mirror glass has found its application in optical instruments: telescopes, lasers, spectrometers, SLR cameras, periscopes. From time immemorial, concave mirrors have been used in medical instruments. With the help of mirror therapy they fight phantom pain. It is not known exactly where and when the first mirror appeared. But we know that the ancient myth about Perseus tells that even then the shield of the ancient hero made it possible to turn the deadly gorgon Medusa into stone... So: My light, mirror! Tell me and tell me the whole truth... The publishing design is preserved in PDF A4 format.