Live broadcast: Ancient people accompany me to make up lessons

During the Jiajing period, Ma Yilong, who had not yet written "Nong Shuo", was now only 31 years old and had not yet been admitted to Jinshi, but he was already Jieyuan.

The last lucky viewer looked curiously at the many majors in the agriculture column and asked: "Anchor, what do you study in soil and water conservation and desertification prevention?"

[Xiao Xiao, who has never gone to college or studied: "...Wait a minute, I'll check."

When a familiar webpage appeared, she quickly typed in the words 'soil and water conservation and desertification prevention', pressed the Enter key to search, and found a video point that seemed the most reliable to play. 】

[A middle-aged man wearing glasses sits at the table and talks to the camera.

"Soil and water conservation and desertification prevention are generally called water conservation. The water conservation major belongs to the environmental ecology category. It was originally a second-level discipline of forestry under the agronomy category. In the past two years, it has been upgraded to a first-level discipline.

Soil and water conservation and desertification prevention and control are comprehensive subjects that intersect various disciplines and majors such as science, engineering, agriculture, hydrology, and forestry. Any related research involving water, soil, and desertification prevention and control falls within the professional scope of water conservation.

For example, hydrology, hydraulics, hydrology and water resources, soil science, soil erosion science, soil and microbiology, soil chemistry... These are related to water and soil, desertification prevention and control, wind and sand physics, and those involving deserts and deserts are among them.

In addition to these three, there are also comprehensive cross-cutting contents such as atmosphere, forestry, ecology, engineering, and meteorology.

Relevant universities offering water conservation majors..."]

Okay, so profound. Every time a word came out of the man's mouth, everyone quickly wrote it down. I feel that each one is very different and useful. I will ask the anchors one by one in the future.

Apart from anything else, 985, 211, and Big Brother are all weird names? And what about Xinong and Chinese Academy of Sciences? Can you be more specific?

In addition, "the flow and sand produced on the slope should be controlled in small watersheds", does it mean that we can also study how to control sand?

Many people express disdain for the fact that later generations of scholars still have to go to the field to conduct field research and dig for minerals after studying for so many years. If you still end up reading after so many years, it would be better not to study in the first place.

After one person said this, the others looked at him strangely, thinking that this person was mentally ill. Everyone talks about going to the field for research, and climbing mountains and going to the fields is all for sampling and research. Although I don’t know what they will study in the end, it is obviously not just going to the ground.

["Okay, let's continue working on the paper, and we will draw the audience in an hour." Along the way, I learned a lot of knowledge, but Xiaoxiao looked at the time and saw that 20 minutes had passed, so he continued to do the questions now. 】

Everyone under the canopy who had stopped to think suddenly became alert. They picked up the pens in their hands again and looked at the canopy with pain and anticipation.

As soon as Liu Che saw the contents of the anchor paper, he immediately lowered his head and started looking at what he had recorded before: "Okay anchor, let's see you in an hour."

[Chlorine can form a variety of oxygen-containing acid salts, which are widely used in sterilization, disinfection and chemical industry. In the laboratory, the device shown below (some devices are omitted) is used to prepare KClO3 and NaClO to explore their redox properties.

Let the test papers fill our brains again!

]

"Sterilization..." Some people who remembered that bacteria and viruses can cause people to get sick immediately reacted, "This ammonia can sterilize. If you use it, you won't get sick!"

The old master knocked the apprentice on the head and cursed: "If it is so easy to avoid getting sick, then why will there be so many medical professions in future generations, and why will they continue to extract medicines?"

Some people are also curious: "Disinfection? Is it possible to use it to detoxify and it is so magical?" If this is true, then chemistry is too magical.

The score party looked at the questions with a total of 14 points and began to calculate points for each blank.

Painting enthusiasts look at this form of drawing and feel that although it is unattractive, it is indeed sufficient for the test questions.

"What are these bottles and jars? You can see the water in them from the picture. Are they all made of glass?" These are some people who think their family conditions are good and are eager to try.

But fortunately, there are also questions in the questions that the anchor does, and they can see the anchor's answers.

[(1) The name of the instrument holding MnO2 powder is , and the reagent in a is .

(2) The heating method used in b is , the ionic equation of the chemical reaction in c is , and the purpose of using ice water bath cooling is...]

As soon as they saw the anchor writing the answers, they followed along and memorized them.

Round bottom flask...saturated salt water...

Wait, what does saturated mean? Does it mean too much and very salty? There is also water bath heating. Are you really so strict about hot stuff?

People who have decided to love, embrace, and convert to chemistry, or work hard to learn chemistry and finally strengthen their alchemy skills, start to do it themselves after reviewing the questions one by one, and then quickly watch how the anchor does it, especially how she calculates the chemical formula.

People who do something right will feel that they are geniuses no matter how humble they are. People who do something wrong will not be discouraged. This is only the first day, and they have not studied systematically, so there is no shame.

[The abandoned grease hydrogenation nickel catalyst from a grease factory mainly contains metal Ni, Al, Fe and their oxides, as well as a small amount of other insoluble substances. The following process flow is used to recover the nickel to prepare nickel sulfate crystals (NiSO4·7H2O):

]

Although I don’t know what this nickel-prepared nickel sulfate crystal is and what it does, but this is probably turning waste into treasure, and everyone can still vaguely understand it.

But when it feels magical, everyone still frowns.

Grease factory, waste grease... what kind of grease are they? Is this waste something bad or something like that? Can you tell me in detail?

"Indeed, each element remains unchanged, changing their properties, and turning useless things into useful things..." In the gathering place of the alchemists in the Huainan Palace of the Western Han Dynasty, everyone looked at the technological process in the sky, and their eyes widened. Light.

Gold and silver are too stable. They are basically simple substances and cannot be refined by reacting with other things. However, other copper and iron are at least more abundant than gold. They think they can study it carefully.

She couldn't understand the other questions either. It wasn't like she was smart enough to understand how the anchor wrote the answers. Fortunately, she wasn't completely right either. After she finished writing them quickly, she started correcting the questions based on the answers.

Under the canopy, most of the people who answered the questions together were more mournful and less happy. Basically, the talented students who only study liberal arts are full of confidence, and then follow the anchor to make crosses and revise.

[It took 50 minutes to finish writing the remaining brain-consuming questions, and all the answers were correct. Xiaoxiao put down the pen, drank the last bit of soy milk, and started to draw numbers.

"Today, the second batch of lucky viewers will start drawing, and I would like to invite the first lucky viewer to speak."]

Liu Che who discovered something: I always pay attention to the time, there are still 10 minutes until 1 hour, she obviously wants to end the work early!

But when he saw that he was the first on the list, Liu Che immediately stopped questioning it.

【1.Chinese: Liu Che

2. Han: Liu Bei

3.Chinese: Liu Xie

4. Tang Dynasty: Li Yuanying

5. Tang Dynasty: Zhou Yun

6. Zhou: Yan Gudao

7.Song: Wei Yingde

8. Song Dynasty: Su Song

9. Ming Dynasty: Zhou Jiuyun

10.Ming: Li De]

Liu Che, who won the second draw, raised the corner of his mouth. When he saw that there were three Liu surnames from the Han family behind him, he searched in his mind and found that there was no one with this name in the clan. He suddenly became happy. He had already started before he even had a son. Think about how many descendants this is.

Liu Bei was very happy that he had won the lottery, especially seeing that his name was right after Emperor Wu. He felt honored and ashamed at the thought of it. Looking at Liu Xie under his name, he could only sigh.

As for Liu Xie, seeing his name in the same frame as Liu Che and Liu Bei, he was very ashamed. The only thing he was thankful for was that Cao Cao was not here now, and he was far away in Shanyang. If he wanted to ask Tianmu anything, he could just ask himself. No. You need to follow other people's wishes.

The good thing is that everyone in the world can see the emperor of the Liu family in the same frame, which will at least cause some trouble for the Wei and Wu families.

In fact, trouble was indeed caused. Looking at the three names in the sky, Cao Pi put down the book in his hand and felt a toothache.

No matter how long the chaos lasted, for the past four hundred years, the world was dominated by the Han family. If Liu Xie and Liu Bei could still be said to be unworthy of being emperors, no one would dare to say that the top emperor, Emperor Wu, was not good.

How could the two of them be so lucky to be on the list and be in the same frame as Emperor Wu?

In the dynasties after the Han Dynasty, those who know a little about history will really want to laugh when they see the three names at the top, but then they can't laugh.

"This is too deliberate." Li Shimin suspected that this was definitely cheating. Otherwise, with so many people from several dynasties, why would it be the turn of those three to be on the list?

He has not even been on the list once, but Emperor Wu has been on the list twice!

How could Liu Che care what others were thinking? He picked up the list he listed and picked the top question.

"May I ask the anchor, what is the weather forecast? How can I let my father know the weather for the day?"

Although he really wanted to ask directly, as a role model for the world, he still needs to be polite and courteous. Besides, this teenage girl in later generations still has a halo here. For example, her parents seem to have no idea about the live broadcast. This is suspected to be only She can do it.

[This question is easy to answer. Xiaoxiao picked up the phone, slid to the weather column and clicked in.

"That's it. We usually have weather software on our mobile phones. Once we locate the country, province, city, or county where we are, we can receive the latest weather information."

The mobile phone interface has a blue sky background with wisps of clouds floating in the air.

'Sunny, 34c-28c, good air, no rain in 2 hours. ’

Below there is also 'It will be sunny today, it will be sunny tomorrow, it will be sunny and cloudy the day after tomorrow... Check the weather for the last 15 days'

"Celsius is a way of measuring temperature. At normal altitude, the temperature at which water boils is 100C, and the temperature at which water freezes is 0C and below."]

It’s so detailed, including the temperature of the day, the current temperature, and the weather for the past fifteen days. The weather forecast on this mobile phone is really useful!

With him, it is much easier for farmers to just harvest the millet, so as not to let the millet hang for two days and then usher in the autumn rain.

With it, the army can take weather factors into account when marching and fighting, and the deployment of troops and generals can be better managed.

And the anchors are still using it to switch cities, both in big cities and in the affiliated counties below, so they can see clearly. With it, it plays a great role in preventing disasters, organizing disaster relief, and determining whether there is a real disaster in the place.

Whenever everyone thinks that little mobile phone is powerful enough, it can refresh everyone's understanding.

Just this weather forecast function is enough for it to become a national artifact.

Liu Bei glanced at the prime minister: "Kong Ming, I really want to ask your descendants if they can sell it this time."

Zhuge Liang: "Ask, Your Majesty." This weather forecast is really useful, so you must ask.

[“Remember what we said before, there are still satellites in space above the earth.

In space far away from the earth, there are professional meteorological satellites. A large number of meteorological satellites and radar systems can monitor the meteorological conditions on the earth, including clouds, precipitation, wind direction, etc. These data can be used to monitor weather changes in real time and combine historical data and models to make predictions.

Meteorological observation stations have also been established in various places, which are responsible for collecting meteorological data, including temperature, humidity, air pressure, wind speed, etc. This data is used to analyze current weather conditions and combined with models to predict future weather.

The information data in weather forecasts are obtained by these scientists and practitioners using their professional methods of observation and calculation to achieve accurate forecasts. "

Afraid that they still wouldn't understand, Xiaoxiao simply found a video about the latest typhoon. Clouds are gathering on the satellite map, and professional analysis is telling its name and route, as well as what the weather is like in the surrounding areas.

"Just like this, weather satellites will take pictures of the clouds, and professionals will analyze and predict them."]

"Why do they still have names for hurricanes/surges?"

"It turns out that this looks like a hurricane, and it looks so big in the sky..."

"Can future generations also not be able to eliminate hurricanes, and can only let them come over?"

"The temperature dropped sharply... No wonder it gets cold when it rains during the summer. It turns out to be a cold wave..."

Those who live offshore are not familiar with the weather map of typhoons, but they are very familiar with this time and the wind blowing in the video. People who usually don't understand the lectures have joined in the discussion at this time.

The ancient people, who had hot eyes and wanted this very much, were also given up by the anchor's words.

This requires real-time observation. Even if you get a mobile phone, you don't have observation satellites or weather stations here, and the weather forecast can't predict it.

Thinking about the professional equipment and talents that so many cities need, everyone is heartbroken.

They really couldn't do this. Qin and Han had few people and even fewer talents. Compared with Tang Dynasty, the quantity and quality of talents were much better, but there were not many talents in this field, let alone complex social relationships. ; And although the Ming and Qing Dynasties were the dynasties that accumulated the most experience in agriculture and astronomical phenomena, they did not have the kind of professional talents the anchor mentioned.

It doesn’t matter if you have electric lights or not, it’s not important, but no one thinks this weather forecast is unimportant.

You have to learn, you really have to learn this.