Telepathy
(Psychology) psychol the communication between people of thoughts, feelings, desires, etc, involving mechanisms that cannot be understood in terms of known scientific laws. Also called: thought transference.
communication between minds by some means other than sensory perception.
Morse code
Morse Code is named after Samuel F. B. Morse (1791-1872), a painter and founder of the National Academy of Design, who, along with Alfred Vail (1807-1859) a machinist and inventor, and the physicist Joseph Henry (1797-1878) developed the electromagnetic telegraph and the code that assigns a set of dots and dashes or short and long pulses to each letter of the English alphabet. The first working telegraph was produced in 1836. This made transmission possible over any distance. The first Morse Code message, “What hath God wrought?”, was sent from Washington to Baltimore in 1844.
Sign lauguage
Sign Languages are organized like sign languages, and can be analysed at the phonological, morphological, grammatical and lexical levels, and there are differences at each of these levels between the many different sign languages. There are however language families of sign languages: American Sign Language, French Sign Language (or langue des signes française, LSF) and Irish Sign Language (ISL) are a part of the same sign language family.
Braille
Braille is a system of raised dots that can be read with the fingers by people who are blind or who have low vision. Teachers, parents, and others who are not visually impaired ordinarily read braille with their eyes. Braille is not a language. Rather, it is a code by which many languages—such as English, Spanish, Arabic, Chinese, and dozens of others—may be written and read. Braille is used by thousands of people all over the world in their native languages, and provides a means of literacy for all.
Braille symbols are formed within units of space known as braille cells.
The source of the pictures