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Louis Braille was born in France 1809. His father had a small business.He made shoes and other things from leather.Louis liked to help his father in the store even when he was very small.One day,at the age of three,when he was cutting some leather,suddenly the knife slipped and hit him in the eyes.He soon becam completely blind.When he was ten years old,he entered the national institute for the blind in Paris.One day,his class went to visit a special exhbit by a captain in the army.One thing in the exhbit was very interesting for Louis.It showed messager in secret codes,so no one else can read them.The captain wrote this code in raised letters on very thick paper.Louis thought a lot about this code.Then he decide to write in the same way so that the blind could "read"with their fingers.It was very difficult to feel the differences between raised letters.Instead of letters,Louis used a"cell"of six dots.He arranged the dots with two dots across and three down.Therefore,blind people can read and write,even write music by Braille?
1.was there anything interesting for Louis when his class visited a pecial exhbit?