SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Braille. A man reading a book in braille. Braille is a system of representing letters and other characters using a 3-row, 2-column matrix. Each of the six positions in the matrix may be either raised as a dot or left flat. Each combination has a discrete meaning, such as a letter, number, syllable, etc. Quran (Koran). Photographed in Groznyi, Chechnya.
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