1: louis braille makes it possible for the blind to read and write.
Louis Braille, a French teacher for the blind, studied different methods of drawing dots and strokes on paper. Finally, he came up with a system in which he used six holes in different positions. In this step, he can make 63 different combinations. Each combination represents a letter or a word. Soon, Louis wrote a book in Braille.
Louis braille, 1809—— 1852, a French braille teacher, studied various methods of writing dots and symbols on paper. Finally, he invented a system, which used the method of placing six holes in different positions. According to this combination, he can combine 63 different combinations. Each combination represents a letter or a word. Soon, Louis wrote a book using the cabbage leaf system.
At first, people didn't believe that Louis Braille's system was possible or practical. One day, a girl who was born blind played a wonderful piano at a concert. Everyone is very happy. Then the girl stood up and said that people should thank Louis Braille, who made it possible for her to learn music and play the piano.
At first, people didn't believe that Louis Cabbage's system was possible or had any practical use. One day, a girl who was born blind played a beautiful tune at the concert. Everyone is very happy. Later, the girl stood up and told people that everyone should thank louis braille because he made it possible for the girl to learn music and play the piano.
Some friends of Louis went to see him at his home. He is ill in bed. They told him what had happened and Louis began to cry. He said, "This is the third time in my life that I have cried. First of all, when I was blind. Second, when I hear' writing at night', now because I know that my life has not failed. "
Some friends of Louis visited him at his home. At that time, he was ill in bed and they told him what had happened. Louis began to cry. He said, "This is the third time in my life. The first time was when I was blind; The second time, when I heard about' Night Book'; Now this time I finally know that my life is not a failure. "
A few days later, Louis died. He is only 43 years old.
A few days later, Louis died at the age of 43.
Chapter two: Laszlo J. Bailo and Relo-inventors of practical ballpoint pens.
Ballpoint pen is a very popular writing tool. But few people know how and when it came into being.
Ballpoint pen is a very popular writing tool. But few people know how and when it was invented.
As early as 1888, John Lauder invented a pen that could write on paper. He called it a ballpoint pen because it was a pen with a ball on the tip. But this ballpoint pen is leaking, and the ball can't rotate freely in the socket. Therefore, it is almost useless.
1888 In the early stage, John Lott made a pen to write on paper. He called it a ballpoint pen because there is a small ball in the hole of the pen. But this ballpoint pen leaks oil and the ball can't rotate freely in the hole. So this pen is almost useless.
Nearly half a century later, laszlo J Biro, a Hungarian living in Argentina, made a ballpoint pen. Biro studied John's ballpoint pens carefully and did a lot of experiments to improve them. At least, he succeeded in making the first usable ballpoint pen, which has a much thinner nib and the ball can rotate freely.
Nearly half a century later, laszlo J Barro, a Hungarian living in Argentina, made a ballpoint pen. Byro studied John's ballpoint pens carefully and did many experiments to improve them. Finally, he successfully made the first usable ballpoint pen, which has a smaller hole and a freely rotating ball.
However, the ballpoint pen we use now was actually improved by Renault in 1945. They have made great improvements in balls and ink. So ballpoint pens become more suitable for us. People like to use ballpoint pens because they don't leak at all; They can keep ink for a long time, and quick-drying ink is not easily affected by climate change.
However, in fact, the ballpoint pen we are using now was improved by Renault in 1945. They greatly improved the heading ball and ink. Such a ballpoint pen is more suitable for us to use. People like to use ballpoint pens because they don't leak at all; They can hold ink for a long time, and this quick-drying ink will not be easily changed due to climate change.
Chapter Three: The Wright Brothers-Aircraft Inventors
The Wright brothers, Orville Wright/KOOC-0/87/KOOC-0/-/KOOC-0/948 and wilbur wright/KOOC-0/867-/KOOC-0/9/KOOC-0/2, invented the first safe and successful airplane. But their first flight,1February 17, 1903, was not good news. Nothing appeared in the newspaper that day. A few days later, short stories began to appear in newspapers all over the country, but no one seemed very interested or impressed.
The Wright brothers named Orville Wright 187 1- 1948 and wilbur wright 1867- 19 12 successfully understood the first safe and reliable airplane. However, their maiden voyage in190365438+February 17 was not so ideal. There was no news about it in the newspaper that day. A few days later, some simple reports began to appear in newspapers circulating all over the country, but none of them looked so interesting or impressive.
Orville Wright flew "Flying Man I" in the air 12 seconds. Wilbur wright and his brother take turns flying their planes. The next two flights lasted twice as long as the first one. On the fourth flight that day, the plane stayed in the air for 59 seconds. After landing, a sudden gust of wind overturned the plane. Voyager One was badly damaged. The first successful plane never flew again.
Orville Mott flew in the sky 1 for 12 seconds. Wilbur wright and his brother take turns flying the plane. The next two flights lasted about twice as long as the first flight. On the fourth flight that day, the plane stayed in the air for 59 seconds. After the plane landed, a sudden wind overturned the plane. The plane 1 was seriously damaged. The first successful plane never flew again.
Louis Blériot flew over the English Channel on 1969. He flew from France to England in a bleriot Xi monoplane with only a pair of wings. This flight is historic. He proved that people from different countries can visit each other very early now.
Louis Brerio flew across the English Channel on 1909. He flew from France to England on a Brerio V plane. His flight is of historical significance. He proved that people from different countries can meet earlier.
The first female pilot was Baroness Delaroche. She took flight 1908. Two years later, she got a pilot's license.
The first female pilot was Beronie Delaroche. She made her first flight at 1908. Two years later, she got the pilot qualification certificate.