Small examples of scientists inventions, what are the stories of scientists inventions?

Meaning: Legend has it that the brush was invented by Meng Tian, a general in the Warring States period. In 223 BC, the general Meng Tian.

He led his soldiers and horses to fight against the state of Chu in the Zhongshan region, and Meng Tian regularly wrote reports on the battle situation and sent them to the king of Qin. At that time, paper.

And the pen has not yet been completed, and it is very inconvenient for everyone to use Yu to write. When the war did not start, Meng Tian rejoiced.

Huan went out hunting. One day, he beat a few hares back to the barracks, and the tail of a rabbit dragged on the ground, bloody.

Trails of bends were dragged on the ground. When Meng Tian saw this, his heart couldn't help but move: The rabbit tail was used instead of Yu to write, but the rabbit hair was shiny and shiny, and it did not absorb ink.

In front of a rock pit.

Because this branch was made of bamboo pipes and rabbit hair, Meng Tian added the prefix bamboo to the word "yu" and put him.

It's called a pen. This is where the brush comes in.

One day, he found the rabbit fur in the rock pit, the rabbit fur was wet, and the rabbit became very listening.

It turns out that the water in this rock pit contains limestone and has passed through alkaline water.

The soaking, the rabbit fur becomes supple.

Edison was curious about many things from a young age, and he liked to experiment with them until he understood the truth. When he grew up, he devoted himself to research and invention according to his interests in this area. He established a laboratory in New Jersey and invented more than 2,000 things in his lifetime, including electric lights, telegraphs, phonographs, motion picture machines, magnetic ore separators, crushers, and so on.

Edison's strong spirit of research led him to make significant contributions to the improvement of human lifestyles.

Edison invented the electric light.

Watt invented the steam engine.

Bell invented**.

Benjamin Franklin invented the lightning rod.

Bushnell invented the submarine.

The Wright brothers invented the airplane.

The story of Edison's invention of the electric light:

Edison, the child of a railroad worker, dropped out of elementary school before finishing school and spent his days selling newspapers on trains. But he was a hard-working man who liked to do all kinds of experiments and made a lot of machinery. He was interested in electrical appliances, and since Faraday invented the motor, Edison was determined to make electric lights and bring light to mankind.

After carefully summarizing the failure experience of his predecessors, Edison formulated a detailed test plan and conducted tests in two aspects: first, more than 1,600 different heat-resistant materials were classified and tested; The second is to improve the evacuation equipment so that the bulb has a high vacuum.

Edison tested more than 1,600 kinds of heat-resistant luminescent materials one by one, only platinum silk has good energy, but platinum ** is amazingly expensive, so it is necessary to find a more suitable material to replace. In 1879, after several experiments, Edison finally decided to use charcoal filament as a filament. He sprinkled a piece of cotton silk with charcoal powder, bent it into a horseshoe shape, put it in a crucible and heated it, made a filament, put it in a light bulb, and then used an extractor to remove the air in the bulb, and the electric light was turned on, and it could be used continuously for 45 hours.

In this way, the world's first incandescent lamps of carbon filament came out.

Professor Shepiro discovered that the whirlpool of bathwater always rotates in the same direction, and after continuous research, the discovery was related to the autobiography of the earth. (Swirl of bathwater).

2.The famous British chemist Boul Yi dropped hydrochloric acid onto the petals of the violet. It was discovered that it would change color, and after continuous experimentation, litmus paper was invented. (discoloration of violet).

3.I thought that the Austrian doctor found that his son was dreaming when he was sleeping, and after constant observation, it proved that when the sleeping person's eyes were rolling, he was indeed dreaming. (Roll of the eyes while sleeping).

4. Newton continued to study and discover the gravitational force of the apple.

5. When Luban went up the mountain, his hand was scratched by a plant, and he invented the saw.

6、.Edison invented the electric light.

7、.Galileo – Two iron balls hit the ground at the same time.

8. Watt – Invented the steam engine.

Edison's invention of the phonograph:

Edison is a famous American scientist and inventor, because he has more than 1,000 inventions such as electric lights, phonographs, movies and storage batteries, so people call him "the king of inventions" and "magician".

The story of Watt's invention of the steam engine:

One summer morning, the weather was clear, and the thrush was singing a pleasant song in the trees. On the campus of the University of Glasgow in the United Kingdom, there is a person who is taking a walk. He paced slowly across the green lawn.

Sometimes he looks at the vast sky, sometimes he looks at the playground, sometimes he frowns? Suddenly, a smile appeared on his face, his mood suddenly brightened, he came up with it, he came up with an effective solution to the steam engine. He ran happily, his feet clear.

In an instant, his figure appeared on the operating table that had been with him for many years. He was Watt, the inventor of the steam engine.

** Invention:

Bell is the one who invented the **. Born in England in 1847, he worked with his father as a young man teaching the deaf and the mute, and wanted to build a machine that would allow the deaf to see sound with their eyes.