Wonderful laboratory composition 1 Two days ago, several members of our holiday team made an appointment to visit grandma Zhao Rangmei's laboratory today.
Early in the morning, we walked into Grandma Zhao's company with curiosity. Before grandma came, an uncle named Yang received us warmly. He told us that they had come to extract some substances for analysis and research.
First, he showed us the capillary column. Originally, I thought it was a thin pillar. When I took it out, it looked like a coil made of thin and long copper wire. In fact, it was a timely hollow tube with a diameter of only 0. 5mm. 25 mm, length 15 m, it is introduced that the longest research length needs to reach two or three hundred meters. I can't help but squint and look inside. "wow! The hole is so small! " "yes. We coated the wall of the pipe with a substance. This process is very complicated. You can show you around later. "
Then, my uncle told us about their work, taking the air detection after indoor decoration as an example. He took out two needles, a big one and a small one. One is a small needle that we can see in the hospital, with a capacity of 1ml, and the other is for research, with a capacity of 10 microliter. Grandpa Yang introduced that you only need to take 1 microliter air from the newly renovated room and inject it into the capillary column to give it a suitable temperature. The substance inside will race according to different temperatures. Benzene with the lowest temperature requirement will run out first, followed by toluene, and then more components will "run out" one after another, and then different peaks will appear on the instrument according to different time.
After listening to my uncle's introduction, we couldn't wait to visit the laboratory, and my uncle agreed to our request.
When you enter the laboratory, the first thing you see is the cleanliness of the capillary column. The newly bought capillary column is cleaned with prepared purified water. I saw the aunt insert one end of the capillary column into a test tube filled with purified water, and the other end hung in an empty bottle. The water kept dripping until it stopped, and the pipe was clean. The cleaned capillary column can be smeared after drying.
Then let's see how to paint it. I saw my aunt inject something like "honey" into it. I heard it was glue. I couldn't help looking forward. At this time, Uncle Yang told us to stay away from my aunt. He said, "When doing this work, you must be calm, otherwise the smear will be uneven or even blocked, making it impossible to be used for research." We immediately quieted down a lot and held our breath to watch. It is said that different substances need to be coated with different glues, so that the tubes filled with glues can be naturally dried for experiments.
After these preparation processes are completed, you can experiment. An uncle extracted some liquor samples and injected them into a coated capillary column. Soon, according to the separation order of different components, peaks appeared on the instrument screen. What a surprise!
After returning to China, I looked up relevant information on the Internet and found that these studies played an extremely important role in the analysis and testing of petroleum, food, environmental protection, biochemistry, medicine, public security and other fields. Mastering this technology requires not only some basic theoretical knowledge, but also a lot of practical experience. It is believed that with the continuous development of chromatographic analysis technology, new technologies and instruments emerge one after another, and their application fields are getting wider and wider. This is really an unusual experience!
Wonderful laboratory composition 2 "Bang, Bang", mixed with excitement, tension and worry, my heartbeat pounded my eardrum again and again. Looking up at the four characters of "holographic interaction", I slowly put my hand on this cold iron door, and the mysterious feeling ran down my arm to the top of my heart. A ray of morning light filtered through the curtain and reflected on the door. With its guidance and heavy inhalation, I pushed open the door of the laboratory. ...
It's dark, it's dark, and there is no light. The darkness surrounded me impenetrable, and I was nervous and helpless, so I could only wave around with my hands. That faint touch comes from my fingertips, as gentle as dragonfly water, and as ethereal as cold water in a smoke cage. "Biological experiment-butterfly identification begins now." Soft lights come on. Wow, at my fingertips is a butterfly, the goddess of light. Wearing a bright blue tulle skirt and a crystal white necklace, I slowly wander, lift, turn, sink and turn, and beautiful pictures like flying appear one by one. In an instant, thousands of butterflies of different species and growing in different regions gathered around me, but this legendary scene actually appeared in front of my eyes. There was a warm and windy female voice in my ear, but I suddenly found that the owners of the voice were actually these little fairies. Shocked, I couldn't help asking them modestly. They have introduced their names, growing environment and year of birth to me. Unconsciously, the knowledge system slowly formed in my mind.
As soon as the conversation was over, I was locked in a dark cage again. In the same environment, my heart is full of curiosity and excitement. "Historical exploration-Jurassic era." Before my thoughts were awakened from the darkness, suddenly a bright yellow vertical pupil appeared in the air. Through the coolness of my heart, I froze in place, screaming stuck in my throat, and fear solidified in my heart. A thick but warm tail rolled me up. "The tallest brachiosaurus!" " "I cried out excitedly, and then I found that my terrible pupil was full of smiles. It slowly put me on my back and began our Jurassic journey. It is like a conscientious teacher, from plants to biology, from environment to geology, from its own population to a prosperous dinosaur family; It is like a friendly elder, answering my doubts and asking my feelings.
Time flies, and darkness comes again in a blink of an eye, but it can't stop my yearning and excitement. "Don't be stupefied, join our virus eradication war!" "Biological experiment-the defense of human body." With the prompt, I quickly rushed to the front with an army of white blood cells. Repair the city wall, destroy the virus and expand the army. With the familiarity with the task, the understanding of human function is gradually deepened. The distant alarm just sounded, white light appeared, and time flowed with it. I quickly closed my eyes.
I was greeted by the familiar open iron door, as if everything I experienced was just a dream, and only the knowledge hovering in my mind could arouse my personal experience just now. The morning sun is scattered at will, like welcoming and expecting. I raised my smile, stepped on the splendid golden awn, and strode towards the door of my future with the glimmer of technology.
Wonderful laboratory composition after the completion of the school's 3D laboratory III. The students are enthusiastic about learning. English class experienced exotic customs, and biology class felt the process of embryo formation. In chemistry class, I came into contact with the microscopic world of molecules and atoms. Everyone is full of expectations for the mysterious, wonderful and ever-changing laboratory teaching.
But the good times didn't last long, and the boring Chinese class came again. The next class should be studying Su Shi's When will the bright moon come? . In Chinese class, the students summed up: prepare your voice and hands. Memorize for 20 minutes, then write 10 times silently.
"The Chinese class will be changed to the laboratory, so please pay attention." The "insider" conveys the latest news. Everyone suddenly stare big eyes-go to the lab to have a Chinese class? How come?
Looking forward to, looking forward to, the Chinese class has finally arrived. Everyone entered the laboratory, sat in their seats and became quiet. The light went out, and I put on VR glasses and Bluetooth headphones like everyone else, ready for class.
"Isn't this the Riverside Scene at Qingming Festival? Listen, why are the people in there moving? Hey, why am I walking on the street in the capital of song dynasty? " I'm surprised. Later, I squeezed into a busy place. It turned out that a good family and a small jasper were surrounded by a woman who wrote, and the manuscript paper she used was extremely chic. "According to legend, this' Snow Tao Jian' was refined by Xue Tao, a female poet in the Tang Dynasty, with' the water of Huanhuaxi, the skin of hibiscus and the juice of hibiscus', which is the first choice for women to write poems, write letters and paint in the boudoir." A quiet girl next to me said.
I saw a wonderful calligraphy work in the woman's hand: "When will there be a bright moon? I take my glass from a distance. I don't know the palace in the sky, and I don't know the month and time. I'm willing to ride the wind to the sky, I'm afraid I can't stand the cold for nine days in a pavilion of fine jade. Dance to find out what shadows look like on the earth. The moon turned into a scarlet pavilion, hanging low on the carved window, shining on the sleepy self. The moon should not have any resentment against people. Why is it round when people are gone? People have joys and sorrows. It's hard to do this when the moon is full of rain and shine. I hope that people will last for a long time and have a good scenery. " Isn't this the word we are going to learn today?
With the bustling crowd, I came to a shop selling Four Treasures of the Study, and an antique paperweight attracted me. Seeing this, the bearded old man quickly said, "Good eye, young man. I asked someone to make this paperweight with the mysterious iron sword handed down from my ancestors. In the Song Dynasty, our country enriched the people and strengthened the country. Now Mafang Nanshan casts a sword as a plow, so the sword handed down from the ancestors has become like this. "
I smiled and nodded, thinking of the meta-alliance I learned in history class. The Song Dynasty compromised politically and militarily. In exchange for the basic peace of Song and Liao dynasties for more than a hundred years, this bustling landscape of Qingming Riverside Map came into being.
Suddenly, the light came on. "When is the bright moon? Ask for wine from heaven ... "I mused on Su Shi's words. I walked out of the magical laboratory with endless aftertaste.
[Recommended reason]
The author of this paper is original and adopts the dynamic and dynamic way of "Riverside Scene at Qingming Festival". It presents us with a prosperous and lively scene of the Northern Song Dynasty, which is really real to read. The description of Xue He's paperweight in this paper shows the author's profound cultural accumulation. The sword became a paperweight. Creative, but also reflects the author. Reflections on the deep-seated reasons for the prosperity and development of economy and culture in the Northern Song Dynasty.
Wonderful laboratory composition 4 This is a magical laboratory that allows people to travel in time and space.
I have long wanted to see her beauty. If she just turns her head and smiles, there will be a mysterious imperial concubine. I stepped into the capsule bin urgently, and I couldn't wait for the commentator to finish, so I pressed the button. ...
The body seemed to be spinning, but it immediately returned to the solid ground. The nasal cavity is full of dust mixed with sweat, which is disgusting. I slowly opened my eyes while coughing, and the bright light in front of me almost made me cry. I, in this way, came to the Tang Dynasty.
Walking on Chang 'an Avenue, I felt the magic of all this. A few minutes ago, I was still in the laboratory, waiting in line to experience the space-time instrument, and now, I have actually stood on the land of the prosperous Tang Dynasty! However, is this really a prosperous new century in which "a small town still hides thousands of families"?
Sadness is my only impression of the scene before me. The rolling wheels raised dry and hot dust and I coughed again. At present, there are several teams of soldiers in armor, dragging their heavy steps forward slowly. Suddenly, I met a soldier's eyes. It was a pair of bloodshot eyes, full of tears, leaving two marks on his dark face. I tried to nod to him, but he turned and walked away as if I didn't exist. I ran after him to find out. The soldier stopped suddenly and looked back. I bumped into him by accident. In desperation, I closed my eyes and prepared to fall to the ground. I didn't expect me to wear it directly from him! I can't help but suddenly realize that I just walked into the memory of history, not really crossed it.
I looked around more boldly. I saw the soldier staring blankly at an old hut. An old woman stood outside the sparse fence and stared at him. Same red eyes, same painful tears. I looked away and the same scene was everywhere. Old people or women and children are sending men with armor, and they are pulling each other and crying. I stumbled and looked at all this, and there was only one thought in my mind: Isn't this the prosperous Tang Dynasty? This is hell! "Car rickety, Ma Xiaoxiao, each of you has a bow and an quiver on your belt. Father, mother, son and wife, watch you go until the dust will bury the bridge outside Chang 'an … "The poem that the Chinese teacher took us to read yesterday actually appeared in front of my eyes in the form of pictures!
"Beep-beep-"The bracelet sensor reminds me that it's time, as if something pulled my navel and I came back.
When I woke up, I was kneeling on the floor of the laboratory and couldn't stop breathing. The narrator came quickly. "You are a unique child. Everyone else went to Kaiyuan Shi Sheng to enjoy colorful feathers, but you went to Tianbao. " She said, "What's so beautiful about war?"
What is there to see in war? Yes, it is not as magical as colorful feathers. But you will never understand without going through the war. Before that, the pain of war was just the superposition of numbers in history books for me; When I saw all this with my own eyes, I realized what it meant to be "a sea of blood in the side court", which dyed the tears of the people red and burned the eyes of the rulers. "And the Heart of the Emperor of Judah Beats for War", twelve volumes of the art of war, all of which are like heady books. Xing, the people suffer; Death, people suffer!
Thanks to this magical laboratory, I dream back to Datang.
Wonderful laboratory composition 5 "Wow ……" The students' shouts of surprise attracted me to stand on tiptoe and look forward involuntarily. It turns out that this is a newly-built laboratory in the school. What a good expression.
The experimental classrooms of different disciplines are distributed in different areas. I began to visit the first biological experiment classroom.
A seed fell into the soil. It is raining lightly in the sky, and the seeds grow rapidly. Become a bud. The bud grows higher and higher slowly. Spit out two small leaves. It continues to grow and its roots gradually thicken. The joint of leaves and stems bulges, just like a chicken pecking through an eggshell, new branches stretch out, the branches become longer rapidly, and the leaves gradually increase. It grew into a small tree. The rain stopped and the young trees did not move. It turns out that what just happened is just the growth process of the seeds in the 3D screen. What an amazing experiment!
Walking to the liberal arts experimental classroom next door made me curious. How does liberal arts experiment? I waited and watched, and approached a 3D screen. I saw a general, wearing armor and holding a pike. Mouth: "I don't want to be a marquis, I want peace." I also rode a horse, beside the general, who commanded the battle and shouted never to return to the unjust enemy. I accompanied the general to run around, waving weapons and fighting on the battlefield. The army repelled the enemy and erected the flag of Qi Jiajun in front of the city gate. As soon as the picture changed, a soldier pulled out a seven-foot dagger from the map. With a loud drink, he stabbed like Qin Shihuang, but Qin Shihuang dodged around and was not stabbed. He made a sudden effort to stab Qin Shihuang's robes on the pillars of the hall, and a stream of blood flowed out of his heart. Jing Ke, a brave soldier, was killed by a soldier's pike, but I watched Jing Ke fall in the hall helplessly.
Just when I was sad, the screen turned off and I came back to reality. I can't help but sigh, that's great. Can you forget studying history like this? It's amazing.
I then entered the geography experiment classroom, and a loud noise echoed in the classroom. It turned out that the 3D screen was demonstrating the process of volcanic eruption. The magma in the center of the earth is moving violently, like a twisted salamander and a nirvana phoenix. The temperature continued to rise and eventually broke through the weak zone of the crust. Large strands of magma spewed out from the top of the mountain and flooded the village at the foot of the mountain. Seeing steaming lava flowing under our feet, the picture suddenly changed. Huge snow fell on the top of the mountain. Looking around, there are endless mountains. Look up. It is the blue sky, the snow-capped mountains and the horizon.
Ding Rinrin, a sweet bell rang in the laboratory. We reluctantly left, what an interesting experiment and what a wonderful laboratory. I really hope that in the near future. Every school has such a laboratory. Every child can take part in such interesting experiments in person, and every student's study life is full of fun.