The deeds of ancient and modern Chinese and foreign scientists

Edison was a poor worker before he became famous. Once, his old friend met him in the street and said with concern, "look, this coat on you is very worn." You should get a new one. " "Need it to be? Nobody knows me in new york. " ? Edison answered indifferently. A few years later, Edison became a great inventor.

One day, Edison met that friend again in the street of new york. "Oh," exclaimed my friend, "why are you still wearing this old coat? This time, I have to change a new one anyway! " "Need it to be? Everyone here already knows me. " Edison still answered casually.

Second, Archimedes

In 2 18 BC, Syracuse went to war with the Roman Empire. When Archimedes was old, Maceiras, the supreme commander of the Roman army, led the Roman army to surround the city where he lived and occupied the seaport.

Although Archimedes disapproved of war, he had to do his duty to defend his motherland. Archimedes saw the national crisis, and the sense of responsibility to defend his country prompted him to stand up against the enemy, so Archimedes racked his brains and invented weapons against the enemy day and night.

Archimedes used the lever principle to make a stone slingshot, which can throw big stones at the warships of the Roman army, or use a transmitter to shoot spears and stones at Roman soldiers. No enemy near the city wall can escape his flying stone or javelin. ................................................................................................................

According to some later records, at that time, he built a huge crane, which could lift the enemy warships into the air and then fall heavily on the water and smash them.

Third, Chen Jingrun.

As soon as Chen Jingrun entered the library, it was like falling into a honey pot, and he couldn't bear to leave. Yes, another day, Chen Jingrun had breakfast, took two steamed buns and a pickle, and went to the library.

Chen Jingrun found the quietest place in the library and read carefully. He stayed until noon and felt a little hungry, so he took out a steamed bun from his pocket and was still reading while eating.

"Ding Lingling ..." The bell rang, and the librarian shouted, "It's time to get off work, please leave the library!" The somebody else all gone, but Chen Jingrun didn't hear, or 1 vigorously in reading.

Fourth, Deng Jiaxian.

On July 7th, 1937, the shots of the Lugouqiao Incident rang out. Twenty-two days later, Beiping fell. The Japanese invaders held a "celebration". 13-year-old Deng Jiaxian can't stand this humiliation. He tore a Japanese flag to pieces in public, threw it on the ground and stepped on it. After this incident, a friend of Deng Yizhe advised him that it would be reported sooner or later, so you'd better let the children leave Beiping as soon as possible.

In desperation, Deng Yizhe asked Deng Jiaxian's sister to take him south to Kunming, while Tsinghua and Peking University professors moved south, and many old friends were in Kunming. Before he left, his father said to him, "Jiaer, you must study science instead of literature in the future." Science is useful to the country. " Deng Yizhe pinned his hopes on Deng Jiaxian according to his own experience, but this sentence left a deep impression on Deng Jiaxian's mind.

Verb (abbreviation of verb) Einstein

Einstein didn't do well in school when he was a child, but he was very good at thinking and often thought of things that others couldn't easily think of.

Once in a handicraft class, the teacher taught everyone to fold cartons. When everyone was busy folding cartons, the teacher found Einstein lying on the table. The teacher thought that little Einstein must be lazy and didn't want to start work, so he went over and asked Einstein why he didn't fold the cartons. Einstein looked up and asked, "Teacher, do you know the thickness of a piece of paper?"

The teacher said, "This is easy to measure. You first measure the thickness of 100 paper, and then divide it by 100 to get the thickness of each paper. " Einstein took out a ruler, measured it accurately, and then calculated that the thickness of a piece of paper was 0.08 mm.