Bell-the inventor of the telephone
Bell (1847 ~ 1922) was an American British telephone inventor. At the age of 22, he was a professor of phonetics at Boston University.
Bell's talent as a teenager is average. When he was in primary school, his academic performance was one or two from the bottom of his class. Not only is he not good at studying, but he is also naughty. His schoolbag often contains small animals, such as mice and sparrows. Once, when the teacher was still lecturing on the stage, the mouse in Bell's schoolbag got out and screamed in the classroom.
The students burst into laughter and became a mess, and the teacher severely reprimanded them.
Later, his father sent Bell to his grandfather in London, and his grandfather disciplined him directly. Grandfather is a tough and stubborn old man, but he is very knowledgeable and patient in education. Soon, Jason Chung fell in love with grandpa, became interested in learning and learned a lot.
He has changed. He not only has good academic performance and enthusiasm for invention and creation, but also has good moral character and is always ready to help others. Once, he saw a lonely old man grinding his noodles with a heavy water mill. Jason Chung sympathized with him and asked a group of young friends to help him. Later, my friends thought it was too difficult to grind, so they quit one after another. Only Jason Chung persisted.
Back home, Jason Chung thought, how can we save Shuimo? In order to design a new water mill, he consulted a lot of information and drew one design drawing after another. After 1 month of repeated thinking, the sketch was finally designed. Several craftsmen saw it and praised it. With the efforts of skilled craftsmen, the water mill is made in a labor-saving way.
Now, the villagers are very grateful to him, and Jason Chung has become a hero in everyone's mind.
When Dambert was young, he liked to talk. His father is an orator. When Bell was young, he organized the Youth Technical Association and gave a speech once a week. He has a gift for speaking. At the age of 22, he was hired by Boston University and became a professor of phonetics. His father and son became famous American speakers.
1On June 2, 875, Bell, 28, experienced thousands of failures and finally made a wired telephone. On this day, he and Watson are conducting a new experiment. Bell put some parts in sulfuric acid, and accidentally, sulfuric acid dripped on his leg. He was in great pain and didn't want to call for help: "Watson, come quickly, I need you!" " The sound reached Watson's ear through the wire. In this way, the first wired telephone was successfully manufactured.
Edison
In order to invent the electric lamp, Edison made 1500 experiments, but he didn't find a suitable material for electric lamp filament. He made 1600 experiments with heat-resistant materials and more than 600 kinds of plant fibers, and then he made the first carbon filament bulb, which can burn for 45 hours at a time. Later, he improved the manufacturing method on this basis, and finally invented a bamboo filament light bulb that can burn 1200 hours. His persistence is worthwhile.
Pasteur (Louis) was born in Dole, Jura, France on February 27th, 1822. His father is a veteran of Napoleon's army and a tanner. Pasteur 1948+0847 graduated from Paris Teachers College. After graduation, I engaged in chemical research and studied tartrate crystals. They have hidden asymmetry, and some crystals are mirror images of other crystals, just like the relationship between left hand and right hand. His achievements in crystal research played a decisive role in the development of stereochemistry. Later, it was found that Pasteur was very lucky when he took the method of preparing crystals. To separate the two crystals, he had to use a special method, but Pasteur adopted this special method completely by accident, and few people could be like him after him.
Newton walked alone in the orchard at home, thinking about problems, and accidentally bumped into an apple tree in the garden. At this moment, an apple just hit Newton's head. Newton suddenly woke up from the problem and picked up the apple. At this time, he fell into another problem: why did the apple fall to the ground instead of floating in the sky? Finally, Newton put forward a universal law of the simplest phenomenon: gravity.
Watt is a child with extraordinary wisdom. He is diligent, eager to explore and most interested in invention and creation. One day, his father's friend came to visit, and he happened to see little Watt sitting by the fire in a daze, holding a pen and paper in his hand, and there were many paintings on the ground. He said kindly, "It's time for little Watt to go to school. Don't just play at home to kill precious time." His father smiled and said, "Thank you, dear. You'd better see what my son is playing with ... "It turns out that Little Watt is designing all kinds of toys and drawing many patterns. This year, Little Watt just turned 6 years old, and the guest said with surprise, "What a wonderful child!" "
On another occasion, the whole family went out, leaving Watt as the doorman. He stared blankly at the teapot boiling water on the stove. The water is about to boil, and the lid of the pot is lifted by steam, which bumps up and down ... He thinks that the steam is so powerful. If we can make a bigger stove and use a big boiler to boil water, the steam generated will definitely be dozens or hundreds of times larger than this. Use it. This is the legendary story of "Watt invented the steam engine". Little Watt imagined it this way, but the steam engine was really trial-produced later.