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 بحث عن Louis Braille

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المدينة : Aswan
العمر : 20
عدد المساهمات : 16
تاريخ التسجيل : 29/10/2010

مُساهمةموضوع: بحث عن Louis Braille   السبت نوفمبر 06, 2010 3:31 am

Louis Braille


Louis Braille (January 4, 1809 – January 6, 1852 ) became blind at the age of 3, when he accidentally stabbed himself in the eye with an awl, one of his father's workshop tools. Braille's other eye went blind because of sympathetic ophthalmia.
At the very young age of 10, Braille earned a scholarship to the in Paris, one of the first of its kind in the world. However, the conditions in the school were not notably better. Louis was served stale bread and water, and students were sometimes abused or locked up as a form of punishment.
Braille, a bright and creative student, became a talented cellist and organist in his time at the school, playing the organ for churches all over
France.
At the school, the children were taught basic craftsman skills and simple trades. They were also taught how to read by feeling raised letters (a system devised by the school's founder, Valentin Haüy). However, because the raised letters were made using paper pressed against copper wire, the students never learned to write. Another disadvantage was that the letters weighed a lot and whenever people published books using this system, they put together a book with multiple stories in one in order to save money. This made the books sometimes weigh over a hundred pounds. The school had just 14 books, all of which Louis had read.
In 1821, Charles Barbier, a Captain in the French Army, visited the school. Barbier shared his invention called "Night writing" a code of 12 raised dots and a number of dashes that let soldiers share top-secret information on the battlefield without having to speak. The code was too difficult for Louis to understand and he later changed the number of raised dots to 6 to form what we today call Braille.
The same year, Louis Braille began inventing his raised-dot system with his father's stitching awl, the same implement with which he had blinded himself, finishing at age 15, in 1824. His system used only six dots and corresponded to letters, whereas Barbier's used 12 dots corresponding to sounds. The six-dot system allowed the recognition of letters with a single fingertip apprehending all the dots at once, requiring no movement or repositioning which slowed recognition in systems requiring more dots. These dots consisted of patterns in order to keep the system easy to learn. The Braille system also offered numerous benefits over Haüy's raised letter method, the most notable being the ability to both read and write an alphabet. Another very notable benefit is that because they were dots just slightly raised, there was a significant difference in make up.
Braille later extended his system to include notation for mathematics and music.
Braille became a well-respected teacher at the Institute. Although he was admired and respected by his pupils, his braille system was not taught at the Institute during his lifetime. The air at the institute was foul and he died in
Paris of tuberculosis in 1852 at the age of 43; his body was disinterred in 1952 (the centenary of his death) and honored with re-interment in the Panthéon in Paris. His system was finally, officially recognized in France two years after his death, in 1854
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بحث عن Louis Braille
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