1 On August 23, 967, the Soviet Union1spacecraft suddenly had a vicious accident when it returned to the atmosphere-the parachute could not be opened. After studying it, the central leadership of the Soviet Union decided to broadcast the accident live to the whole country. When the announcer of the TV station announced in a heavy tone that the spaceship would crash in two hours.
The audience will witness the news of the death of astronaut Vladimir Komarov, and the whole country will be immediately shocked and people will be immersed in great sorrow. On TV, the audience saw the calm image of astronaut komarov. He smiled and told his daughter: "When studying, you should take every decimal point seriously.
What happened on the Soyuz 1 today was because a decimal point was ignored in the ground inspection ... "Even a decimal point error will lead to a tragic farewell that can never be remedied.
2. A mathematician triggered by a story
Chen Jingrun, a famous mathematician, made great contributions to overcoming Goldbach's conjecture and founded the famous "Chen Theorem", so many people affectionately called him "the prince of mathematics". But who would have thought that his achievement originated from a story? One day, Teacher Shen Yuan told us a story in a math class.
"A Frenchman discovered an interesting phenomenon 200 years ago: 6=3+3, 8=5+3, 10=5+5, 12=5+7, 28=5+23,100 =/kloc. Every even number greater than 4 can be expressed as the sum of two odd numbers. Because this conclusion has not been proved, it is still a guess. Euler said: Although I can't prove it, I am sure this conclusion is correct.
It is like a beautiful light ring, shining with dazzling brilliance in front of us not far away. ..... "Chen Jingrun stare eyes, absorbed. From then on, Chen Jingrun became interested in this wonderful question. In his spare time, he likes going to the library. He not only read the counseling books in middle schools, but also eagerly read the textbooks of mathematics and physics courses in these universities. Therefore, he got the nickname "bookworm".
Interest is the first teacher. It is such a mathematical story that aroused Chen Jingrun's interest and his diligence and made him a great mathematician.
3. Tang Priest and his disciples picked peaches.
One day, the Tang Priest told his disciples Wukong, Bajie and Friar Sand to go to Huaguoshan to pick peaches. Before long, the three disciples returned happily after picking peaches. Tang Priest and his disciples asked: How many peaches did each of you pick? Bajie said with a silly smile, Master, let me test you. Each of us took the same amount of money. There are less than 65,438+000 peaches in my basket. If we count three peaches, there are 1 peach left in the end.
Do the math. How many did each of us choose? Friar Sand said mysteriously, Master, I will test you, too. If there are four peaches in my basket, there is 1 left in the end. Do the math. How many did each of us choose? Wukong smiled and said, Master, I'll test you, too. If there are five peaches in my basket, there will be 1 in the end. Do the math. How many shall we each choose?
4. The story of "0"
Roman numerals are symbols representing numbers, which are combined to represent different numbers according to certain rules. When using this number, the number "0" is not needed. At that time, a scholar of the Roman Empire discovered the symbol "0" from Indian notation. He found it extremely convenient to use "0" for mathematical operations.
I also introduced the "0" method used by Indians. The Pope knew then. The Pope was very angry. He rebuked that the sacred number was created by God, and there was no "0" monster in the number created by God. So he ordered the scholar to be arrested, and his ten fingers were tightly clamped with a clamp, so that his hand was disabled and he could no longer write with a pen.
In this way, "0" was banned by the ignorant and cruel Pope. However, although the use of "0" is forbidden, Roman mathematicians still use "0" secretly in mathematical research regardless of the ban, and still make a lot of mathematical contributions with "0". Later, "0" was finally widely used in Europe, but Roman numerals were gradually eliminated.
5. Mathematicians' "forgetfulness"
On the 60th birthday of Professor Wu Wenjun, a mathematician in China, as usual, he got up at dawn and buried himself in calculations and formulas all day. Someone specially chose to visit at home this evening. After exchanging pleasantries, they explained their purpose: "I heard from your wife that today is your sixtieth birthday, and I came to congratulate you." Wu Wenjun seemed to hear a message and suddenly said, "Oh, really? I forgot. " ?
The bearer was secretly surprised and thought, how can a mathematician not even remember his birthday because his mind is full of numbers? In fact, Wu Wenjun has a good memory for dates. Nearly sixty years old, he conquered a difficult problem for the first time-"machine certificate". This is to change the way mathematicians work with "a pen, a piece of paper, a head".
Using electronic computer to realize mathematical proof gives mathematicians more time to engage in creative work. He clearly remembers the date when the electronic computer was installed and the date when more than 300 "instruction" programs were compiled for the computer.