Chapter 1360: When will you help us mediate?

The construction process of dam is generally divided into three steps:

One, interception: dig one or several tunnels or open channels in a natural

river, and then intercept the river to make the water flow downstream along

the diversion tunnel or open diversion channel;

2. Excavation of foundation pits: The dam must be built on a stable

geological structure. Therefore, the sediment on the river channel must be

excavated, and the dam abutments (like door frames) must be dug out on both

sides until the bedrock layer is exposed;

3. Filling the dam body: fill the dam body according to the type of dam

(concrete dam, rockfill dam, etc.) until the top is sealed;

The current Bahe Dam has reached the second step. Under Li Zexuan’s order,

concrete pillars wrapped in steel bars were driven into the excavated

foundation pit. The riverbed of the Bahe River was suddenly full of The "clang

clang clang" hammering sound!

After driving the reinforced concrete column into the riverbed, the next step

is to pour the lower dam body with cement. In comparison, this is not

difficult, so Li Zexuan looked here for two quarters of an hour and then went

to Mo Huai. Said it and left!

When passing by the workshop, Li Zexuan's heart moved, instead of going home

directly, he raised his foot and walked towards the workshop.

came to the workshop and asked about the location of Mo Lingwei, Li Zexuan

came outside a "laboratory" in the workshop headquarters building, the door

was left open, and Li Zexuan pushed in.

I saw Mo Lingwei on the table, working on a strange-looking machine. The upper

end of the machine is a cylinder with many rotating mechanisms in the middle.

The rotating mechanism is also a cylinder. There are four square tables under

the cylinder. There is a square hole in the middle of the table. A spring

clamp is fixed on both sides of the hole.

From the appearance, it is basically a modern microscope of "beggar version"!

I just don't know how the image quality is!

I didn't expect this girl to have such a strong hands-on ability and so

efficient in her work! You know, in this microscope, all those fine-tuning

parts are fine-tuning with screws, and the workshop does not yet have a

machine tool and does not have the conditions for batch processing of threads.

All the screws used in it are processed by hand.

Therefore, this microscope is absolutely unique, even if Mo Lingwei makes

another one, she will not be able to do exactly the same.

This also shows that although one microscope has been built, it cannot be

mass-produced.

Looking at the embryonic microscope on the table, Li Zexuan couldn't help but

say: "Miss Mo, is this a microscope?"

"Ah~~!"

Mo Lingwei was concentrating on adjusting the microscope, when she heard the

sound behind her suddenly, she screamed, she almost didn't get scared to

death!

"Ah! Shanchang...you...you...how do you walk without a sound? Also, why don't

you knock on the door? It scares me to death!"

Mo Lingwei turned around and saw that the person who made the sound was Li

Zexuan. She rolled her eyes and said strangely.

Li Zexuan said with an innocent face: "Miss Mo, this door is still open, which

door do I knock? Also, who said that I have no sound when I walk, and I did

not deliberately control my feet. It is Ms. Mo that you are too focused, so I

didn't hear it!"

Mo Lingwei hummed proudly, then bypassed the topic and replied: "This

microscope has basically been assembled according to what you said, Shan

Chang. At present, it is indeed possible to see some small things, but they

still exist. I don’t understand two questions!"

Li Zexuan curiously asked: "What's the problem?"

It stands to reason that Mo Lingwei's practical ability in engineering is

unmatched in the entire Yanhuang Academy, so Li Zexuan is also very curious

about the problems she encountered!

"First of all, there is the problem of light source. Because the distance

between the microscope objective lens and the observed object is very small,

it is difficult for light to shine on the observed object, so the image seen

through the eyepiece will be very dark and difficult to distinguish;

Second, what is the point of building a microscope so much? Is it just to see

some small things clearly? But if you want to see those tiny things, just use

a magnifying glass, so why bother? "

Mo Lingwei frowned, very puzzled.

I have to say that this girl’s optical attainments can definitely be regarded

as entering the room. Now I am communicating with Li Zexuan and inadvertently

said some "professional terminology", but I guess I can’t understand it when I

look at it.

Li Zexuan smiled and replied, "Miss Mo, the first problem you found is not

without a solution! First, you can use a set of fairy mirrors to reflect the

sunlight outside the house or the candle light inside the house to the object.

Up; Second, we can create a light source directly under the stage that carries

the object under observation!"

"Making the light source? How to make the light source? Don't you want to put

a candle under it, Shanchang? No, the candle will blacken the lens!"

Mo Lingwei said quickly.

Li Zexuan said a little bit amused: "Who said I would use candles as the light

source? Don't worry, the light source I mentioned will never produce any smoke

when it shines, and the light it emits is several times brighter than the

light of a candle! "

Mo Lingwei said strangely: "There is no smoke and dust? Don't you need to burn

the light source, Shan Chang, you don't need to burn? But how can there be

anything in this world that can emit light without burning? Shan Chang, please

show me this light source!"

At this moment, Mo Lingwei's interest in Li Zexuan's light source is far

greater than the microscope itself.

Li Zexuan touched his nose, coughed dryly, and said, "Ahem! Miss Mo, this kind

of light source has not been made yet, so you should use the first method I

said now!"

The light source he said is actually a light bulb. Although he can't get the

key material of the light bulb-tungsten wire, it can be replaced by other

materials, such as carbonized bamboo wire!

In 1854, Henry Goebbels used a charred bamboo filament, which was placed under

a vacuum glass bottle to energize and glow. His invention today seems to be

the first incandescent lamp with practical utility. The bulb he tested at that

time had been able to last for four hundred hours, but later Edison's

incandescent lamp made of tungsten filaments only cared about the life of

about 1,000 hours.

So before finding metal tungsten, it is a very good choice to use carbonized

bamboo wire instead of tungsten wire!

Mo Lingwei listened to Li Zexuan's "blow" this kind of light source "blow" for

so long, but at the end she said "not done yet". She usually respects Li

Zexuan very much. At this moment, she can't help but turn to Li Zexuan. Big

eyes, if she changed her mind, she would just start spraying: If you didn't

make it, you said a fart to my old lady!

"... Shan Chang, what about the second question?"

Mo Lingwei took a deep breath, resisting the urge to curse, said.

Li Zexuan smiled awkwardly, and said, "As for the second question, I actually

asked Miss Mo to make a microscope to observe even smaller objects. It is

difficult to see clearly with a magnifying glass alone!"

Mo Lingwei questioned: "A smaller object? What is that? Is it because

molecules or atoms are not made?"

Now in the textbooks of "Physics" or "Chemistry" of Yanhuang Academy, there

are only introductions about molecules and atoms, so it is not strange that Mo

Lingwei can know molecules and atoms!

It’s just that... this girl really dare to say that if you want to see atoms

with a microscope, the requirements are too high!

First of all, it is necessary to clarify that the size of atoms is about 0.1

nanometer (nm), while the general optical microscope, because the visible

light source wavelength is distributed in 400-700 nanometers, is limited by

the diffraction limit, and the resolution limit of the optical microscope can

only be a few hundred nanometers. So if you want to see atoms with a

microscope, you must use a super-resolution electron microscope.

Judging from the current industrial base of Datang, let alone more than ten

years, even if it is given to Datang for a hundred years, it is estimated that

the technology has not developed to that level!

"Miss Mo was joking. I was talking about smaller objects, not atoms. Oh, by

the way, Miss Mo, have you ever calculated the magnification of this

microscope?"

Li Zexuan suddenly thought of a very crucial question, so he asked.

Mo Lingwei thought for a while, and replied: "I roughly calculated that the

magnification of this microscope is about 400 times!"

Li Zexuan nodded very satisfied when he heard the words. The world’s first

super-magnification microscope made by Levin Hooke had a magnification of 270

times. This by Mo Lingwei has completely surpassed the column. Wen. Hook's two

hundred and seventy times!

"Haha! Very good! Four hundred times, it should barely work!"

Li Zexuan laughed, then pretended to be mysterious: "Miss Mo, please follow

the method I said before, and then improve the microscope, then I will show

you something good!"

Mo Lingwei was very curious, and said: "Mountain Chang, what good thing is

it?"

"Hey! This is temporarily kept secret!"

Li Zexuan chuckled and refused to answer.

Mo Lingwei curled his lips very dissatisfied, and then changed a pitiful face,

saying: "Shan Chang, look at me as a girl. I don’t learn poetry and etiquette,

but work for you in the workshop every day. Is it easy for me to collect your

wages? You still treat me like this~www.mtlnovel.com~ I don’t know how to pity

you! Humph!"

Li Zexuan was an agitated spirit, and secretly said that this girl is really a

savage dramatist, and it is estimated that only Yan Shaoning can surrender. He

quickly waved his hand and said: "Cough cough! Girl Mo, I will tell you what I

want to show you in a few days. It's also for nothing, because I haven't made

that thing yet! But you really have contributed to making this microscope, but

I am not a stingy person, and you will definitely be satisfied with the

benefits that will be given to you at that time!"

Mo Lingwei's eyes lit up, and she suddenly became energetic. She hurriedly

asked, "What's the advantage? Shan Chang, can you talk about it?"

Li Zexuan chuckled, and said, "Well, it's the benefit, it's to help you match

up with Yan Shaoning! How about? How is this benefit?"

"Yeah!"

Mo Lingwei made a rare red face, and she groaned: "Who...who is going to marry

him... Shan Chang, when will you help us matchmaking?"

"Ok?"

Li Zexuan looked dumbfounded and almost didn't turn this turn, "Ahem! As soon

as possible! I'll bring this up to your father and Uncle Yan as soon as

possible! Well...you are busy, I have something to do, so let's go! "

Li Zexuan drove off quickly, he was afraid that if he stayed with this girl a

little longer, his head would become abnormal!

…………………………

Https://

Genius this site address:. Mobile version reading URL: