Ⅰ The Story of a Great Scientist in 200 Words
In August 1862, one morning, Edison was selling newspapers at a small station. When he looked up, he saw a three or four-year-old boy. The little boy was squatting next to the railway track and playing with stones. A freight train was speeding toward him. Edison said "Oh!", threw down the newspaper, rushed down the platform desperately, and snatched the child out. At this time, the train whizzed against his ears. And it was so dangerous! Edison held the little boy and fell next to the railroad tracks. His face and hands were scratched. However, the child was saved.
The little boy’s father’s name is McKenzie. He is the webmaster of this station and he is an excellent operator. McKenzie saw this thrilling scene with his own eyes and was so moved that he could not speak coherently: "Thank you... thank you, thank you for saving... saving me." The child!"
But Edison smiled indifferently. He picked up the newspaper from the ground, patted the dust on his body, boarded the train and left.
The next day When Edison's train entered the station, McKenzie was already waiting on the platform. He said to Edison very sincerely: "I have nothing to reward you. I heard that you are very interested in telegraphy. If you If you are willing, I can teach you the technique of sending and receiving telegraphs and make you a telegraph operator." These words spoke to little Edison's heart. He happily accepted McKenzie's kindness and followed him to learn the techniques of sending and receiving telegraphs.
Edison was very attentive in his studies and made rapid progress. In just three months, he was already very proficient in sending and receiving telegraphs. McKenzie recommended him to work as a telegraph operator at the railway station. This was a great surprise. The learning opportunities laid a good foundation for Edison's future great inventions.
Newton's story
One evening, Newton, who was deep in thought, subconsciously looked toward the apple orchard in his backyard. Walking. In the garden, the apple trees were covered with ripe apples, and the air was filled with the refreshing fruity fragrance. Newton was completely unaware of this.
Suddenly, there was a "click" sound, and an apple appeared on the tree. The overripe apple was blown to the ground by the wind. Newton's thoughts jumped: Hey! Why doesn't the apple fall to the sky? Is it the gravity of the earth that is attracting it?!
Newton immediately made an association , and by extension, it is believed that the force of the earth to attract apples, the force of the earth to make the moon rotate around itself, and the force of the sun to make the planets rotate around itself are all the same. After arriving at the force of gravity, people also call it "Gravity".
Ⅱ The Story of a Scientist in 200 words
In August 1862, one morning, Edison was selling newspapers at a small station. Looking up suddenly, he saw a three or four-year-old boy squatting next to the railway track and playing with stones. A freight train was speeding towards him. Edison said "Oh!", threw down the newspaper, rushed down the platform desperately, and snatched the child out. At this time, the train whizzed past his ears. How dangerous! Edison fell to the railroad track while holding the little boy. His face and hands were cut, but the child was saved.
The little boy’s father is called McKenzie, and he is the webmaster of this station. He is an excellent telegraph operator. McKenzie saw this thrilling scene with his own eyes and was so moved that he could not speak coherently: "Thank you... thank you, thank you for saving... saving my child!"
Edison didn't care. Smiling, he picked up the newspaper from the ground, patted the dust off his body, boarded the train and left.
The next day, when Edison's train entered the station, McKenzie was already waiting on the platform. He said to Edison very sincerely: "I have nothing to reward you. I heard that you are very interested in telegraphy. If you are willing, I can teach you the technology of sending and receiving telegraphs and make you a telegraph operator." These words It's right in the heart of little Edison. He happily accepted McKenzie's kindness and followed him to learn the technology of sending and receiving telegraphs.
Edison was very attentive in his studies and made rapid progress.
In just three months, he was already very proficient in sending and receiving telegraphs. McKenzie recommended him to work as a telegraph operator at the train station. This unexpected learning opportunity laid a good foundation for Edison's future great inventions. Base.
Newton's Story
One evening, Newton, who was deep in thought, subconsciously walked towards the apple orchard in his backyard. In the garden, the apple trees were covered with ripe apples, and the air was filled with the refreshing fruity fragrance. Newton was completely unaware of this.
Suddenly, there was a "click" sound, and a ripe apple on the tree was blown to the ground by the wind. Newton's thoughts jumped: Hey! Why don't apples fall to the sky? Is it the earth's gravity that is attracting it? !
Newton immediately made the association and extended it. It is thought that the force by which the earth attracts the apple is the same as the force by which the earth causes the moon to revolve around itself, and the force by which the sun causes the planets to revolve around itself. The force of gravity was derived, and people called it "gravity."
Ⅲ The Scientist’s Story Edison 200 words
1. First experiment
When Edison was young, he often went to the neighborhood Muir Winchester's home mill. One day, he saw Winchester experimenting with a flying device using a balloon in the Winchester family's mill. This experiment fascinated Edison. He thought that if a person's stomach was full of air, he would definitely rise. God.
A few days later, Edison mixed several chemical raw materials together and gave them to his father's helper Michael Oates. Edison told Michael Oates that people would fly after eating such things. Oates almost fainted after taking the "flying agent" prepared by Edison. Edison was whipped by his father and alerted by his children's parents, who advised their children not to play with Edison and to stay away from him.
2. Innocent and curious hatching of chicks
Once, when it was time to eat, Edison still did not come back. The parents were very anxious and looked around. It was not until the evening that they found Edison on the grass beside the yard. He was found in the shed. When his father saw him lying motionless in the haystack with many eggs, he asked Edison what he was doing. Little Edison replied that he was hatching chicks. It turned out that he saw a hen hatching chicks and found it strange. Give it a try yourself too.
At that time, his father pulled him up angrily and laughed, telling others that chicks would not be hatched. On the way home, he asked in confusion: "Why can hens hatch chicks, but I can't?"
(3) 200-word extended reading of the story of the scientist's discovery:
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Edison was the first person in human history to use mass production principles and electrical engineering research laboratories to engage in invention patents that had a profound impact on the world. His inventions of the phonograph, movie camera, and electric light had a great impact on the world. He made more than 2,000 inventions in his lifetime and held more than 1,000 patents.
Edison was not only well-read, but he also had a photographic memory. Under the guidance of his mother, Edison read the works of the British Renaissance playwrights Shakespeare and Dickens and many important historical books. He also read some works of Thomas Paine. Edison was attracted by the insights in the books and has always influenced him. his life.
In 1877, Edison discovered that the diaphragm in the telephone microphone would vibrate with the sound of speech, so he experimented with a short needle and got great inspiration from it. The speed of speaking can cause the short needle to vibrate in different ways. Then, in turn, this vibration must also be able to produce the original speaking sound, so he began to study the problem of sound reproduction.
On August 15, Edison asked his assistant to make a "weird machine" consisting of a large cylinder, a crank, a receiver and a diaphragm according to the drawing. After it was made, Edison took out a piece of tin foil and rolled it. On the metal cylinder engraved with spiral grooves, let one end of the needle rub against the tin foil and rotate, and the other end is connected to the receiver.
Then Edison cranked the crank, sang into the receiver, put the needle back in place, cranked the crank again, and the machine played back Edison's voice. In December, Edison publicly displayed this "tinfoil cylinder phonograph", which caused a sensation around the world.
Ⅳ The Story of a Scientist (within 200 words)
Einstein’s story of playing truant
In the spring of 1895, Einstein was 16 years old. According to German law at the time, boys who left Germany before the age of 17 did not have to return to serve in the military. Due to his deep hatred of militarism and the fact that he could no longer bear to be alone in the military-like Luipold High School, Einstein decided to leave Germany without consulting his parents and reunite with his parents in Italy. However, what should I do if I drop out of school and cannot get a diploma in the future? Einstein, who had always been honest and simple, came up with an idea that he thought was a good one in desperation. He asked his math teacher to give him a certificate saying that he had excellent math scores and had already reached the university level. He also got a sick leave certificate from a familiar doctor, saying that he had a nervous breakdown and needed to go home to rest. Einstein thought that with these two proofs, he could escape from this disgusting place. Unexpectedly, before he applied, the dean of students called him in and ordered him to drop out of school because he had ruined the class spirit and failed to abide by school discipline. Einstein blushed. No matter what the reason was, as long as he could leave this middle school, he was willing to do so and didn't care about anything else. He just suddenly felt guilty for having come up with a cunning idea that he never implemented. Later, Einstein felt guilty every time he mentioned it. Perhaps this kind of thing is too far away from his frank and sincere personality.
Ⅳ Scientist's Story 200 words
1. Newton's Story
Newton is a world-famous scientist. Newton loved animals when he was a child. Once, his friend gave him a dog and a cat. Newton was very happy to receive the gift and took good care of his new friends. In order to make it easier for the dog and cat to enter and exit the room, Newton dug two holes near the door. , one big and one small. Someone asked him, why did you dig two holes, one big and one small.
Newton replied: "Can a dog pass through a cat hole?" Newton's childhood was unfortunate. His father died three months before he was born. When she was two years old, her mother remarried to a neighboring village. Newton had to depend on his grandmother. He never spent money recklessly. His only hobby was to do some small crafts. He gathered his pocket money and bought tools such as saws and hammers. After school, he would hide in the house and knock on things.
Newton was very focused when he was studying. Once when I was boiling eggs, I was thinking about mathematical formulas and mistakenly thought my watch was an egg and threw it into the pot. Another time, I had been working on a problem since morning and even forgot to eat lunch. When he felt hungry, it was already dark. As he stepped out of the study room, he felt a gust of breeze and felt unusually fresh. Suddenly it occurred to me: Didn’t I go to eat? Why did you come to the courtyard!
So he immediately turned back and walked into the study again. When he saw the calculation manuscript spread out on the table, he forgot all about eating, and immediately went back to his desk to calculate nervously.
2. The story of Marie Curie
Marie Curie was a French-Polish scientist who studied radioactive phenomena and won the Nobel Prize twice in her life. Mary has been very diligent and hard-working since she was a child. She has a strong interest and special hobby in learning. She never misses any learning opportunity easily and shows a tenacious and enterprising spirit everywhere. Since elementary school, she has ranked first in every subject.
At the age of 15, he graduated from middle school with a gold medal for outstanding results. Her father had previously studied physics at St. Petersburg University. His thirst for scientific knowledge and strong ambition also deeply influenced little Mary. She loved the various instruments in her father's laboratory since she was a child. When she grew up, she read many books on natural science.
This made her even more full of fantasy, and she was eager to explore the world of science. But her family's financial situation did not allow her to go to college. At the age of 19, she began to work as a long-term tutor. At the same time, she also studied various subjects on her own to prepare for her future studies.
In this way, until the age of 24, she finally came to study at the Faculty of Science of the University of Paris. She has a strong desire for knowledge.
Listening to every class with concentration, hard study made her physically worse and worse, but her academic performance has always been among the best, which not only made her classmates envious, but also surprised the professors. Two years after enrolling, she took the physics bachelor's degree exam with confidence and ranked first among 30 candidates. The next year, she obtained a bachelor's degree in mathematics with second place honors.
3. The Story of Franklin
One day in June 1752, in the suburbs of Philadelphia, USA, with dark clouds, lightning and thunder, there were two people, an old man and a young man, on a wide lawn. He was flying a kite there happily. Suddenly, a bolt of lightning split the clouds and made a "zigzag" in the sky, followed by a thunder and raindrops pouring down. I saw the old man shouting loudly: "William, stand in the thatched house over there and tighten the kite string."
At this time, lightning flashed one after another, and the thunder was louder than the other. Suddenly William shouted: "Dad, look!" The old man looked in the direction his son pointed, and saw the tightened hemp rope, which was originally smooth. Suddenly, he became furious, and the thin fibers stood upright one by one. Get up. He shouted happily: "The lightning is coming!" He told his son to be careful.
While slowly approaching the copper key connected to the hemp rope with his hand. Suddenly he fell to the ground as if he had been pushed by someone, his whole body numb. Ignoring the pain, he climbed up from the ground and connected the Leyden bottle he brought with him to the copper key. There is indeed electricity in this Leyden bottle, and it also releases sparks. It turns out that electricity from the sky and electricity from the earth are the same!
He and his son took the Leyden bottle home as if they had found a treasure. The people who captured Tiandian were Franklin and his son William. Franklin was not only a great scientist, but also an outstanding statesman and diplomat. He was one of the initiators of the Declaration of Independence and the first ambassador of the United States to a foreign country.
After the kite experiment, Franklin wrote a paper "On the Identity of Lightning and Electricity", which explained the nature of lightning and proposed the idea of ??manufacturing lightning rods to protect buildings from lightning strikes. The lightning rod invented by Franklin suddenly became popular and spread to Britain, France, Germany, Europe and America.
4. Nobel’s story
Nobel’s father was a talented inventor who was devoted to chemical research, especially the study of explosives. Influenced by his father, Nobel showed a tenacious and brave character since he was a child. He often went to experiment with explosives with his father. After many years of studying explosives with his father, his interest soon turned to applied chemistry.
In the summer of 1862, he began research on nitroglycerin. This is an arduous journey full of danger and sacrifice. Death was always with him. An explosion occurred during an explosives experiment. The laboratory was blown up without a trace, and all five assistants died. Even his youngest brother was not spared. This amazing explosion.
Nobel's father suffered a very heavy blow and died not long after. Out of fear, his neighbors also complained to the government about Nobel. After that, the government prohibited Nobel from conducting experiments in the city. But Nobel was unyielding and moved his laboratory to a boat in a lake on the outskirts of the city to continue his experiments. After long-term research, he finally discovered a substance that was very easy to cause explosions.
Mercury fulminate, he used mercury fulminate to make explosive detonators and successfully solved the problem of detonating explosives. This was the invention of the detonator. It is a major breakthrough on the road to Nobel science. Nobel made many inventions in his life, and received 255 patents, including 129 types of explosives alone. Even when he was dying, he still couldn't forget his research on new explosives.
5. Watt’s story
Watt was born in England. Due to his poor family, he had no chance to go to school. He first worked as an apprentice in a watch shop, and then worked as an instrument repairman at the University of Glasgow. Smart and eager to learn, he often took time to sit in on professors' lectures. In addition, he personally played with the instruments all day long, so he accumulated a lot of knowledge. In 1764, the University of Glasgow received a Newcomen steam engine that required repair.
The task was given to Watt. After Watt repaired it, he saw how hard he was working, like an old man panting and trembling while walking with a heavy load. He felt that it should be improved. He noticed that the main problem was that the cylinder heated up, cooled down, and cooled down again with the steam, which wasted a lot of heat. Can it be kept cold and the piston work as usual?
So he rented a cellar with his own money, collected several scrapped steam engines, and determined to build a new machine. From then on, Watt played with these machines all day long. Two years later, he finally came up with a new machine. But after trying to ignite it, the cylinder leaked air everywhere. Watt tried his best to wrap it with felt and oilcloth. Several months later, he still couldn't cure the problem.
Watt did not give up. After unremitting efforts, he finally designed a condenser that was separate from the cylinder. This tripled the thermal efficiency and used only a quarter of the original coal. Once this key point was broken through, Watt suddenly felt that his future was bright. He went to the university to ask Professor Black for some theoretical questions, and the professor introduced him to technician Wilkin who invented the boring machine.
The technician immediately used the method of boring the barrel to make the cylinder and piston, which solved the most troublesome air leakage problem. In 1784, Watt's steam engine was equipped with a crankshaft and flywheel. The piston could be continuously pushed by steam coming in from both sides. There was no need for manpower to adjust the valve. The world's first real steam engine was born.
Ⅵ The Story of a Scientist (within 200 words)
The Story of Bi Sheng’s Movable Type Printing
In the early days of printing, the book was engraved in one block. printed on the wooden board. I heard that my senior brother Bi Sheng invented movable type printing, and the printing efficiency suddenly increased dozens of times. The juniors all learned from my senior brother.
Bi Sheng demonstrated and explained at the same time, introducing his invention to his juniors without reservation.
He first made small squares from fine clay, carved convex backhand characters one by one, burned them hard with fire, and placed them in wooden grids according to the rhymes. Then spread adhesive (rosin, wax and paper ash) on an iron plate, arrange the character prints one by one according to the words and paragraphs, then put an iron frame around it and heat it with fire. When the adhesive cools slightly, use a flat plate to flatten the layout. After it is completely cooled, you can print. After printing, the printing plate is dried with fire to melt the adhesive, and the movable type is removed one by one and saved for the next typesetting.
The junior fellow students couldn’t help but admire it. A junior brother said: "There are more than 5,000 volumes of the Tripitaka, and 130,000 wooden boards were carved, which cannot fit in a room. It took many years of hard work! If I use my brother's method, it can be completed in a few months. Brother, How did you come up with such a clever method?"
"My two sons taught me!" Bi Sheng said.
"Your son? How is that possible? They can only 'play house'."
"You're right! They just rely on this 'playing house'." Bi Sheng He smiled and said, "Before the Qingming Festival last year, I took my wife and children back to my hometown to worship our ancestors. One day, my two sons played house and made pots, bowls, tables, chairs, pigs, and people out of mud. They arranged them as they pleased. Back and forth. Suddenly something brightened up in front of my eyes. At that time, I thought, why don’t I also play house? Isn’t it possible to carve single-character seals in clay and arrange them into articles? Haha, isn’t this what my son taught me? "Really?"
The brothers also burst out laughing after hearing this.
"But all the children have played this house, and all the senior brothers have seen it. Why are you the only one who invented movable type printing?" The same junior brother asked.
After a while, the master spoke: "Among your brothers, Bi Sheng is the most thoughtful.
He has already been thinking about new ways to improve work efficiency! Three feet of ice cannot be frozen in one day. ”
“Oh——! "The brothers were suddenly enlightened.
Ⅶ A short story about scientists of more than 200 words
George Simon Ohm was born in Erlangen, Germany. His father was a locksmith. His father taught himself He taught Ohm the knowledge of mathematics and physics as a teenager, which aroused Ohm's interest in science. At the age of 16, he entered the University of Erlangen to study mathematics, physics and philosophy. Due to financial difficulties, he dropped out of school in 1813. He completed his doctoral studies only in 2001. Ohm was a man of great genius and scientific ambition. He had been a middle school teacher for a long time. The lack of materials and instruments brought many difficulties to his research work, but he was in a lonely and difficult environment. Always persistent in scientific research, he made his own instruments.
Ohm studied the electric current in the wire. He was inspired by Fourier's discovery of the law of heat conduction. The heat flow between two points in the heat-conducting rod is proportional to . The temperature difference between these two points. Therefore, Ohm believed that the current phenomenon was similar to this. He speculated that the current between two points in the wire may be proportional to some driving force between them, which is now called the electromotive force. He devoted a lot of energy to research in this area. At first, he used a voltaic pile as the power supply, but the effect was not good because of the unstable current. Later, he accepted other people's suggestions and switched to a thermoelectric battery to ensure the stability of the current. But how to measure the size of the current was still an unsolved problem at the time. At first, Ohm used the thermal effect of the current to measure the current, but this method was difficult to obtain accurate results. Combining Stern's discovery of the magnetic effect of electric current with the Coulomb torsion scale, he cleverly designed a current torsion scale, using a twisted wire to suspend a magnetic needle so that both the current-carrying wire and the magnetic needle were placed parallel along the meridian direction; then he used bismuth and copper One end of the thermoelectric cell is immersed in boiling water and the other end is immersed in crushed ice. Two mercury tanks are used as electrodes and are connected to copper wires. When current flows through the wires, the deflection angle of the magnetic needle is proportional to the current in the wires. The experimental results were published in 1826. In 1827, Ohm summarized his experimental rules into the following formula: S = γE, where S represents the electric force, that is, the wire. The potential difference between the two ends, γ, is the conductivity of the wire to current, and its reciprocal is the resistance.
In the early days of the discovery of Ohm's law, many physicists were unable to correctly understand and evaluate this discovery, and were met with skepticism and sharp criticism. The research results were ignored and the economy was extremely difficult, which made Ohm mentally depressed. It was not until the British Royal Society awarded him the Copley Gold Medal in 1841 that he attracted the attention of the German scientific community. It has also been proved in many of his works that: resistance is directly proportional to the length of the conductor and inversely proportional to the cross-sectional area and conductivity of the conductor; in the case of a stable current, the charge is not only on the surface of the conductor, but also on the entire cross-section of the conductor Movement.
In memory of him, people named the physical unit of resistance after ohm
Ⅷ The story of the inventor in 200 words
The beating pot. Cover
Watt was a British scientist more than two hundred years ago.
When he was young, one day he watched his grandmother cooking. On the stove, a pot of water boiled. The boiling water was rolling in the pot, and the lid of the pot was not covered, jumping up and down, making a crackling sound.
Watt was very surprised, so he asked his grandmother: "Grandma, why does the lid of the pot jump?"
Grandma said: "When the water boils, the lid of the pot jumps."
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Watt asked again: "Why does the lid of the pot jump when the water boils?"
Grandma could not answer.
From then on, Watt often sat next to the stove and observed carefully. He saw the water boiling, the steam in the pot rising upwards, and the lid of the pot lifted.
He thought: The pot lid is pushed by water vapor. The water vapor generated by a pot of boiling water can push a pot lid. More boiling water will produce more water vapor. Wouldn't it be able to push heavier things?
After Watt grew up, he continued to study this issue. He learned from the experience of his predecessors and after many experiments, finally invented the steam engine.
Ⅸ Examples of truths discovered by scientists from tiny things, less than 200 words
The story of Newton and Apple
For a long time, Newton believed that there must be a mystery The force exists, and it is this invisible force that pulls the planets in the solar system to revolve around the sun. But what kind of force is this?
Until one day, when Newton was under the apple tree in the garden After thinking about it, Newton finally had an epiphany when an apple fell at his feet, and his problems were gradually solved.
Legend has it that in the autumn of 1665, Newton sat under the apple tree in his yard and suffered. Thinking about the reasons for the movement of planets around the sun. At this time, an apple happened to fall, and it landed at Newton's feet. This was a moment of discovery. This apple's fall was different from countless apple falls in the past, because it caused Newton's attention was drawn to Newton. Newton found the reason for the apple's fall from the natural phenomenon of the apple falling to the ground - the effect of gravity. This invisible force from the earth pulls the apple to fall, just like the earth pulls the moon, causing the moon to revolve around it. The earth moves the same way.
Ⅹ Stories about scientists’ inventions and discoveries (150~200 words)
In 1747, French engineer Fran?ois Freno made the world’s first invention The earliest raincoat. He used latex obtained from rubber wood and dipped his cloth shoes and coats into the latex solution to make them waterproof.
McIntosh, who works in a Scottish rubber factory, is living in poverty and cannot afford to buy rain gear. He has to commute to get off work in the rain every rainy day. One day, he accidentally stained his clothes with rubber juice and couldn't wipe it off, so he had to go home wearing the dirty clothes. It was raining outside, but McIntosh came home and was pleasantly surprised to find that the clothes he was wearing were not wet at all. He simply smeared rubber juice all over his clothes. This is the world's first tape raincoat.