1884, Wardman, an employee of a European company, once got a deal for his company from several competitors. However, when he handed a bottle of ink and a quill pen used by people at that time and asked the other party to sign the contract, the pen tip dropped a few drops of ink and stained the contract.
To make matters worse, the key words in the contract are vague. Wardman had to ask the other party to wait a moment and let him get a new contract paper. But just after Wardman left, the salesman of another company took the opportunity to steal the business. This made Wardman very depressed. He thinks the problem lies in the quill pen.
Strong regret and indignation have become a great force. He is determined to develop a pen that is easy to use and can automatically and evenly discharge ink. After hard work, Wardman finally invented the fountain pen.
Although the fountain pen at that time was far less exquisite than the pen now, it was no longer as inconvenient and easy to drip ink as the feather pen. Because Wardman developed fountain pens in this way, some people call the birth of fountain pens "the invention after the rage".
2. The story of Lu Ban inventing the saw.
Legend has it that one year, Luban accepted the task of building a huge palace. The palace needed a lot of wood, so he and his disciples had to go up the mountain to cut wood with axes. At that time, there was no saw, and the efficiency was very low.
Once he went up the mountain, he accidentally caught a handful of weeds growing on the mountain, but he cut his hand at once. Lu Ban wants to know why a grass is so sharp. So he picked a leaf and observed it carefully. He found many small teeth on both sides of the leaf. These little teeth are very sharp when he touches it gently.
He knew that his hand had been cut by these small teeth. Later, Lu Ban saw a big locust eating leaves in a meadow. The two large molds are very sharp. As soon as they opened and closed, they quickly ate a big piece.
This also aroused Lu Ban's curiosity. He caught a locust and carefully observed the structure of its teeth. He found that locusts also had many small teeth on their two big dies, which were used by locusts to bite grass leaves. These two things gave Lu Ban great inspiration.
So he made a bamboo chip with many small serrations from a big bamboo, and then went to a small tree to do experiments. The result was really good, and soon a deep ditch was drawn on the trunk, which made Lu Ban very happy.
However, bamboo can not be used for a long time because of its softness and poor strength. After pulling for a while, some small serrations are broken and some are dull, so it is necessary to replace bamboo. Lu Ban thought of iron pieces and asked the blacksmith to help him make small serrated iron pieces.
Lu Ban and his apprentice each pulled one end and pulled it up on a tree. I saw them coming and going, and soon I sawed off the tree, which was quick and labor-saving, and the saw was invented.
3. Five old Baishi people who are easy to draw.
Qi Baishi, a carpenter, became a painter by himself and won the World Peace Prize. However, in the face of his success, he was never satisfied, but constantly absorbed the strengths of famous painters of all ages and changed the style of his works. His paintings after 60 are obviously different from those before 60. After 70 years old, his painting style changed again.
After 80s, his painting style changed again. It is said that Qi Baishi had five relaxed painting styles in his life. It is precisely because the old man Baishi is still non-stop after his success that his works in his later years are more mature than his early works, forming a unique genre and style.
4. Xiao Gao thinks skillfully about solving arithmetic problems
Gauss is a great German mathematician. When he was a child, he was a clever boy and loved to think.
When I was in primary school, once a teacher tried to cure naughty students in his class. He worked out a math problem and asked the students to increase ... from 1+2+3 to 100. He thinks this question is enough for these students to calculate for half a day, and he may also get half a day's leisure. Who knows, to his surprise, only after a while.
Gauss raised his hand and said he was finished. The teacher looked at the answer, 5050, exactly right. The teacher was surprised. Ask little Gauss how to work it out.
Gauss said that he didn't add it from beginning to end, but first added 1 and 100 to get1kloc-0/,then added 2 and 99 to get1kloc-0/,and finally added 50 and 5 1. The clever Gauss was praised by the teacher.
5. Promote the wizard Harry
When Harry was fifteen or sixteen years old, he worked as a child laborer in a circus and was responsible for selling snacks in the circus. But not many people watch it every time, and even fewer people buy things to eat, especially drinks. ?
One day, an idea came to Harry's mind: give everyone who bought tickets a bag of peanuts to attract the audience. The boss doesn't agree with this "absurd idea".
Ha used his meager salary as a guarantee and begged the boss to let him try. Then, a voice came from outside the circus: "Come to the circus, buy a ticket and send a pack of delicious peanuts!" " "In harry's constant shouting, the audience several times more than usual.
After the audience entered, little Harry began to sell drinks. Most viewers will buy a cup when they feel thirsty after eating peanuts. After a circus, the turnover has increased ten times.