"Meditation on Life" When people are alive, they must face hypocritical others and accept their true self. A person should pursue inner things, but in addition to pursuing fame and fortune, he should also have his own hobbies, which have nothing to do with fame and fortune, just to enjoy happiness without any impurities. When people are alive, they should be sincere to themselves and beware of others' insincerity. It may not be easy, but who didn't grow up through tempering?
I didn't understand why so many people should thank those who hurt him before, but later I gradually realized that sympathy and pity from others will only make you weak, but that disdain can make you strong. It is this kind of injury that makes you do something you didn't do before. Later, I was confused, because I wanted to thank the person who hurt me, and the reason why he hurt me was not to make me progress and push me forward, but to simply hit me to show how smart and great he was. How can such a person deserve my thanks? I just keep the most pertinent comments in his evaluation of me as a reference, as a goal of changing myself and making myself better and better.
Don't affect your mood just because others say something casually, and don't be unhappy because of bad weather. Your mood should be in your own hands, not at the mercy of others. You can make yourself happy all the time, but others don't always give you happiness, so forge a happy mood for yourself, even if it's stormy outside, smile.
Ⅱ. A short story about cell discovery
Robert hooke, the man who discovered cells, observed things in the world with naked eyes for a long time. However, the limit of objects that can be seen by human eyes is only 0. 1 mm in 1 century. Roman scholars said that crystal vessels filled with water can enlarge letters. /kloc-In the middle of the 6th century, a Swiss naturalist described snail shells and protozoa with a magnifying glass. 16 10 years, Galileo (G.Galilei, 1564- 1642) made a microscope to observe insects according to the characteristics of magnifying objects when the telescope looked backward. Since then, more and more people have made their own microscopes, and the British physicist robert hooke (1635- 1703) is one of them.
In 1665, Hook cut smooth slices from a small piece of clean cork. When he put it under the microscope, he seemed to see some small holes, but it was not clear. Hooke's extremely thin slices were white, so he lined them with a black board and polished them with a convex mirror, so he clearly saw that all the slices were porous, like a honeycomb. Hook's purpose in studying cork at that time was to clarify that cork is light, elastic and hydrophobic, but as a result, many small holes or chambers were found. Hooke first called these holes cells. The term cell has been used to this day.
From 1677 to 1678, Dutch microscopist A. van Leeuwenhoek (1632-1723) found that there were many small animals in the water soaked with pepper with a self-made microscope. At the same time as Rafenhoek, Italian and British scientists were engaged in microscope observation and research. They observed and described plant cells, protozoa, bacteria and red blood cells respectively. As an early microscopist, Hooke and they recorded many important observations, revealing an incredible and complex biological world at a new level for the first time.
Robert Hooke established the cell theory after observing cork slices with a self-made microscope. For a long time, people mistakenly thought that cell wall is the main component of cells. 167 1 year, British and Italian scientists found that living cells are full of sticky substances. They call this sticky substance "mucus", but they don't know that it is the main component of cells. 183 1 year, a British scientist found that in a living plant cell, there is a structure composed of particularly dense substances. He called this structure the nucleus, and thought that the nucleus was a part of the cell. At this time, although both cytoplasm and nucleus have been discovered, people still don't know their importance and overestimate the role of cell wall. It was not until 1838 that German scientists pointed out that cell wall is the product of cytoplasm and nuclear activities, not the main component of cells.
From 1838 to 1839, German botanist Schleiden (M.J.Scheiden, 1804- 188 1) and anatomist and physiologist Wang Shi (T.Schwann,/kloc). This is the first theoretical generalization since robert hooke discovered cells in 1665. Cell theory clarifies the unity of the nature of life in the plant kingdom and the animal kingdom, which has become a great leap for people to understand the biological world.
Three. What are Levin Hook's stories about microscopes and microbes, and their tricks?
Playing is usually regarded as a waste of time, but in the history of science, many great discoveries are made through playing. belong to
Levin Hook of the Netherlands likes to play with the camera.
Levin Hook's job is to guard the gate and ring the bell in the bell tower regularly. This job is quite easy. He stayed here all the time, so he cleaned his glasses while watching the door. He thinned the edge of the thick glass.
Iv Anthony? What is the story of Levin Hook and the microscope?
Lead: He is an apprentice in a grocery store and is obsessed with polishing lenses. Countless days and nights of polishing, the embarrassment of life and the passage of time have not killed his enthusiasm and pursuit of science-he is Anthony, the founder of microbiology and the "father of microscope"? Levinhawk
First, the plight of childhood
1632, accompanied by a baby crying, the legendary master of science was born in Delft, a historic town in the Netherlands. Born in an ordinary family, both parents are bottom workers, which doomed him to take a bumpy road in the future. /kloc-When he was 0/6 years old, Levin Hook's father left-his father's death forced him to shoulder the burden of supporting his family at a young age, so he went to Amsterdam, the capital of the Netherlands, as an apprentice to earn a meager income.
However, this apprenticeship did not last long. At the age of 20, Levinhawk returned to his hometown of Delft. With the skills he learned, he opened a small cloth shop, but soon he found another good job-guarding Delft City Hall. The janitor's job is very easy. It is important to have enough time to communicate with people who come in and out and get to know all walks of life.
Third, the postscript
Time is up 1723. Levin Hook, who is 9 1 year-old, persists in observation and research despite his deteriorating physical condition, and has not slackened off because of his success. After his death, the Royal Society received something from Levin Hook-a letter and hundreds of magnifying glasses!
The legendary master devoted his life to the making of microscopes and the observation and research of microorganisms. After his death, he left such a huge scientific wealth to future generations. His persistence, persistence, pursuit and exploration of science really made all future generations feel admired and moved!
"If you want to succeed in your career, you must spend a lifetime!" Anthony? Antoni van Leeuwenhoek
References:
Liu Renzhi: The Story of Micro-world
Zhang Hongkui: A New Pioneer of Microbiology —— Brief introduction and reflection on Levin Hooke's life.
Fable stories written by four primary school students
Charcoal burner and clothes bleach
The charcoal burner manages a house. When he saw a cloth drifter move to live next to him, he went up to persuade him to live happily with him and explained that it was more intimate, convenient and economical. The bleaching man replied, "Maybe what you said is true, but that's impossible, because everything I bleach will be dyed black by you."
This story shows that different kinds of people are difficult to get along with.
Magnifier and microscope
(Leo Shen, fourth grade primary school student)
There is a magnifying glass, arrogant and doesn't care about anyone.
On this day, the magnifying glass met the microscope.
The magnifying glass moves the microscope and says, "microscope, big guy!" Centuries have passed. Are you still so fat? Seeing me today, shouldn't you consider when to go to the hospital for plastic surgery? "
The microscope was not angry at all, and slowly replied, "I am a little fat, but this is determined by the nature of my job." I don't need plastic surgery to lose weight! " Everything useful has its own uses and shortcomings. "
"You mean I'm useless?" Magnifier felt his self-esteem was hurt and his mood suddenly became excited. He shouted loudly, "I am much more useful than you!" People use me to observe insects, the police use me to help solve crimes, and the old man uses me to read newspapers ... "
At this moment, a scientist came from a distance. The magnifying glass said contemptuously to the microscope, "Look! Scientists are using me! He can't come and get you! "
However, the scientist picked up the microscope and left. The magnifying glass was in a hurry and shouted, "Hello! Why did you choose that big guy over me? What's good about a microscope? "
The scientist stopped and replied, "You are very useful, but so is the microscope!" " Bacteria 10,000 times smaller than a grain of fine sand can be seen clearly with a microscope! Microscope is very useful in medicine, biology, chemistry, archaeology and other disciplines! "
Say that finish, scientists turned and left. And the magnifying glass, but stupefied to stay where it is. Recalling the scientist's words, it blushed.
From then on, the magnifying glass will never look down on others.
ⅵ What's the story of the song "Love under a Microscope"?
Love under the microscope-Huang Yida
Love sings under the microscope: Huang Yida listens to the sky crying, washes away some dreams, buries in the city, and listens to the ticking of time, as if predicting the future series, a letter, an old sweater, a souvenir of who is who, and what to remember a rain. Love in your eyes is not important after birth, illness and death. Ask yourself, can I see without your love under the microscope, and cruelly enlarge all the reasons for love. After falling in love with you, you were cruel to me. Honey, let me forget about you. I finally looked at it carefully. I fell in love with you after meeting you. Then I was cruel to you. Honey, let me forget about you. After meeting you, I fell in love with you and was cruel to you. Honey, let me forget about you. I finally looked at it carefully. It was raining in the subway station at midnight. I looked at another pair of you and me on the roadside.
They fell in love and broke up for some reason.
ⅶ stories about innovation
Innovation and invention are always a family, and every inventor carries the spirit of innovation. Just creating a new thing without exerting its value is not a real innovation.
(Note: Leeuwenhoek = Leeuwenhoek)
From the story of Levin Hook, the inventor of the microscope, look at many elements behind innovation.
Levin Hooke is a member of the Royal Society and has no formal higher education. Levin Hook was a janitor when he was young. The janitor's job is relatively easy, with plenty of time, and he often meets people of all shapes. One day, Levin Hook heard from a friend that in an optical shop in Amsterdam, a major European city, something called a magnifying glass will be sold, which can make things that were originally unclear bigger and clearer.
Levin Hook felt very interesting and curious, and he also wanted to experience this mysterious device. So he went to the optical shop and bought a magnifying glass, but the price of this new device was too expensive for Levin Hook to buy. He left the optical shop with regret, only to find that the master in the shop was grinding the lenses.
After careful observation, Leeuwenhoek found that the most basic method of grinding lenses is not complicated and mysterious, but the key point lies in the skill and patience of grinding. Levin Hook decided to try grinding his own magnifying glass. This can not only satisfy curiosity, but also watch magnified objects without too much financial burden.
As a result, Leeuwenhoek became a "lens grinding enthusiast". After disdainful efforts, I finally grinded out my own magnifying glass. Later, for the convenience of use, he also fixed the lens on the bracket, put a metal plate at the lower end of the lens and punched holes in the metal plate. This is the first microscope in the world.
Levin Hook often shuts himself in a secret room, polishes his lenses with various materials, assembles various microscopes, and observes various things with a microscope day and night. In this microscopic world, he discovered microorganisms, discovered human red blood cells, and even vaguely saw bacteria that humans really began to understand after 200 years.
Levin Hooke polished more than 500 lenses in his life and assembled 400 microscopes of different sizes. Through extensive and careful observation, he became the first discoverer of many microorganisms and cells.
Persuaded by his friends, Levin Hooke recorded his findings and mailed them to the Royal Society. Published by the Royal Society and shared his findings with scientists all over the world. Levin Hooke therefore became a member of the Royal Society. Although he has no higher education, he can't read Latin at all. )
This is the story of Levin Hook and the microscope. But there is actually an episode in the story about the microscope. Before Levin Hooke invented the microscope, in fact, someone invented the microscope long ago. Many people already know the function of convex lens and concave lens. More than 90 years before Levin Hooke made the microscope, an optician named Zhan Sen made the microscope with concave lens and convex lens. However, his technology is relatively rough, the observation magnification is not large, and he has not continued to use this equipment for scientific research and play its value. Therefore, the inventor of the microscope was finally recognized by history as Levin Hook, and Levin Hook became the "father of microorganisms".
Ⅷ small fable, write it yourself.
Magnifier and microscope
There is a magnifying glass, arrogant and doesn't care about anyone.
On this day, the magnifying glass met the microscope.
The magnifying glass moves the microscope and says, "microscope, big guy!" Centuries have passed. Are you still so fat? Seeing me today, shouldn't you consider when to go to the hospital for plastic surgery? "
The microscope was not angry at all, and slowly replied, "I am a little fat, but this is determined by the nature of my job." I don't need plastic surgery to lose weight! " Everything useful has its own uses and shortcomings. "
"You mean I'm useless?" Magnifier felt that his self-esteem was hurt and his mood suddenly became excited. He shouted loudly, "I am much more useful than you!" People use me to observe insects, the police use me to help solve crimes, and the old man uses me to read newspapers ... "
At this moment, a scientist came from a distance. The magnifying glass said contemptuously to the microscope, "Look! Scientists are using me! He can't come and get you! "
However, the scientist picked up the microscope and left. The magnifying glass was in a hurry and shouted, "Hello! Why did you choose that big guy over me? What's good about a microscope? "
The scientist stopped and replied, "You are very useful, but so is the microscope!" " Bacteria 10,000 times smaller than a grain of fine sand can be seen clearly with a microscope! Microscope is very useful in medicine, biology, chemistry, archaeology and other disciplines! "
Say that finish, scientists turned and left. And the magnifying glass, but stupefied to stay where it is. Recalling the scientist's words, it blushed.
From then on, the magnifying glass will never look down on others.
ⅸ Who knows the story of Dorian Hook about the microscope?
Levin Hook —— Mystery under the Microscope
With the Renaissance and the rise of the British industrial revolution, Europe began to get rid of the shackles of feudal society and strode to the forefront of human civilization. People desorb in the free air, and various natural sciences have sprung up like mushrooms after rain. Experiment has replaced God's instruction and become the first element of science, and the scientific era with observation as the main body has arrived. Holland, a small country on the west coast of Europe, has developed shipping and once had the largest fleet in the world. Although the Netherlands is a country that attaches importance to commercial trade, the wave of industrial revolution has spread here. In the17th century, Dutch capitalism has developed greatly, and various handicrafts have flourished rapidly, especially the research on optics and optical instruments related to navigation has been greatly promoted. At that time, in a small town in Holland, there was a cloth dealer named Antoni van Leeuwenhoek (1632~ 1723). He grinds glasses in his spare time, which is a great hobby in his life. Not only did he polish the lenses at a high level, but once he fixed two polished lenses in parallel on a wooden frame and looked down through the lenses. To his dismay, the object under the lens became bigger. He observed the rain with this structure and found many "small animals" swimming in it, which Levin Hooke called "micro-bodies". He deliberately took some tartar from the teeth of an old man who had never brushed his teeth and observed it under a homemade device. This time, he was even more surprised: it turned out that the Tatar was full of all kinds of small creatures, which were invisible to the naked eye, or rod-shaped, or spiral and spherical. Some exist alone, some are connected, some come and go in a hurry, and some are carefree. Levinhawk was very interested in all this, and he recorded all the observed results in detail. 1676, 10 On June 9th, Levin Hook wrote a letter to the Royal Society of London (the scientific authority at that time) and reported his observations. He wrote: "1675, a new earthenware pot with glazed inner layer and lower part, was just filled with rain a few days ago, and I found small creatures in the water. In another report submitted to the Royal Society of London, Levin Hook said that he put some whole peppers in the well water the day before. When he observed the well water, "I found many tiny animals in a small drop of water." They come in all kinds and sizes, which is unbelievable. Like eels, they bend over and move around, always swimming with their heads forward and their tails never moving forward. Although they move very slowly, these tiny animals will move forward and backward equally freely. "British scientists read his warm letter with great interest, but obviously didn't realize the significance of his discovery. & lt
1683, Levin Hook wrote to the Royal Society of London again, and this time he also sent his drawings. In 684, the abstract of this letter was published in the Journal of the Scientific Research Society of the Royal Society together with the bacterial map drawn by Levin Hook. This is the first time that Levin Hook's discovery has been made public. There is no doubt that Levin Hook was the first person to see this bacterium and draw a bacterial map. Levin Hook put two lenses together in parallel, which is actually a simple mirror. Levin Hooke's microscope can be magnified 200-300 times, and only the shape and outline of bacteria can be seen, but Levin Hooke first revealed the existence of creatures other than plants and animals through the bacteria he discovered. After Leeuwenhoek, many tiny creatures were discovered one after another. Since then, the biological category has been greatly broadened: in addition to the familiar animals and plants, there is also a tiny microorganism that survives and reproduces in this world.