Who has a celebrity to learn the story, who has, anxious!!!!!

Lu Xun sells medals.

When Lu Xun was studying at the Jiangnan Sailor School in Nanjing, the school awarded him a gold medal for his excellent examination results. He did not wear this medal as a proof of showing off, but took it to Gulou Street and sold it, buying back a few beloved books and a string of red peppers. Whenever he reads until the dead of night and the weather is cold and sleepy, he picks a chili pepper, divides it into several slices, puts it in his mouth and chews, chews until his forehead sweats, tears flow in his eyes, and his mouth "sighs".

Played famously.

Play copying is often thought of as a waste of time, but in the history of science, there are many great discoveries that have been made through play.

The invention of the pneumatic tire (1888).

The world's first bicycle was born around 1817. Bikes were primitive at the time, with no saddles, no chains, no flywheels, and no tires. There is only a bodywork and two wooden wheels.

The wooden wheels are tied up with iron sheets, and the vibration is very great when walking on the road, and this kind of bicycle is of course very uncomfortable to ride. Later, pneumatic tires were invented, and bicycle construction was improved, making it a common means of transportation.

So, who invented the pneumatic tire for bicycles? It's interesting to say that pneumatic tires turned out to be invented by a doctor.

The doctor's name was Dunlop, and he was a Scotsman living in Ireland. He has a son who is very envious of other people riding bicycles around the street and would love to have one. To meet his baby son's request, Dunlop bought a bicycle.

When my son got the bike, he was so happy that he rode around the cobblestone streets all day. Dunlop was distressed when he saw his son riding his bicycle with a bump in his life, and began to think about how to improve the wheels of his bike.

Dunlop was a doctor and an amateur flower lover. One day, he was watering flowers in the garden with a rubber hose. He held the hose in his hand and felt the flow of water.

He deliberately tightened the rubber tubing, relaxed, clenched, and relaxed. The elasticity of rubber inspired his thinking. He thought:

Can you attach this water-filled rubber hose to the wheels of the bicycle to reduce the vibration of the bicycle while it is moving?

Following this bold idea, Dunlop immediately began trial production. After many trials and failures, he finally made the world's first tire with a rubber pipe for watering flowers. This kind of tire is filled with water, which is very inconvenient during test riding.

This is because it is difficult to fill the tires with water, and it is not possible to reduce the weight of the body. To this end, Dunlop devised a way to replace water with gas, and after many successful trials, the pneumatic tire was finally born in 1888. At first, the new tires were ridiculed as "mummy" tires, but cyclists found that they ran faster and smoother with them.

At that time, there was a man named Dicro who set up a company to make these tires, which later became the Dunlop Rubber Company.

2. Bell and **.

One day, Thomas, Bell's assistant. Watson fiddled with the clamped reeds, and Bell heard the neighbor from the wire.

The plucked string sound coming from the right room. He wrote down the facts, which led to further trials. During the experiment, Bell encountered a number of difficulties.

On March 10, 1876, Bell shouted over the radio: "Mr. Watson, please come here!" I've got something to look for you!

Watson's assistant in the lab heard the call and jumped out of the lab like crazy and ran to the dormitory where Bell was shouting. He yelled all the way, "I heard Bell calling me!"

I heard Bell calling me! ”…

In this way, human beings have the first ** and open a new page of the history of communication. In 1877, the first news wire was sent to the Boston newspaper Le Monde, marking the adoption of ** by the public. In 1878, the Bell Company was formally established.

To give you two, one is Bill Gates, the richest man in the world, and the other is Jib Bill Gates, who once participated in the 80-kilometer walking march of the Summer Boy Scouts, the time was a week, he wore a new pair of high boots, obviously the new shoes did not fit well, and the 13-kilometer walking march every day, climbing mountains, and crossing the forest, made him suffer; On the first night, the skin on his heels was frayed and he had many blisters on his toes. He gritted his teeth and kept going. On the second night, his feet were very red and swollen, and the cracked ** was bleeding.

His companions advised him to stop, but he shook his head, just asked the doctor for cotton wool and gauze to bandage, asked for some painkillers, and continued on his way. In this way he continued until a station on the way to inspect him, and when the leader found that his foot was very inflamed and ordered medical treatment, the march was stopped. Gates's mother, who had arrived from Seattle, cried sadly when she saw his feet festering, complaining about why her son hadn't stopped the march earlier.

Gates said lightly: "It's a pity that I didn't reach my destination this time." ”

Jibu's "promise of a thousand gold" saved him from disaster.

At the end of Qin, there was a man named Ji Bu, who had always been a man of his word and a very high reputation, and many people had established a strong friendship with him. At that time, there was even such a proverb: "It is better to get ** hundred catties, than to get Ji Bu Yinuo."

This is the origin of the idiom "a promise of a thousand catties") Later, he offended Liu Bang, the ancestor of the Han Dynasty, and was arrested with a reward. As a result, his old friends were not only not deceived by the heavy money, but also risked the destruction of the Nine Clans to protect him and save him from disaster.

Comment: If a person is honest and trustworthy, he will naturally receive much help and gain everyone's respect and friendship. On the other hand, if you are greedy for temporary comfort or a small advantage, and lose your trust in your friends, you will ostensibly get "benefits".

But for the sake of this benefit, he ruined his reputation, which is far more important than material. Therefore, losing faith in a friend is tantamount to losing a watermelon and picking up sesame seeds, and the gains outweigh the losses.

The story of Zhang Jinkang's love of reading.

There is a mathematician named Zhang Jinkang, who has loved mathematics since he was a child.