Little known.
In ancient China, the purification of salt has always been a troublesome matter.
In the most primitive tribal era, humans even relied on eating hair and drinking blood to obtain salt.
After entering the history of civilization, the ancestors found salt wells and obtained the method of processing coarse salt.
During the Tang and Song Dynasties, refined salt refined from sea salt gradually appeared, and the highest price even reached one pound...or sixteen taels and ninety cents.
But the word refined salt here is actually a concept that can be compared with the earlier coarse salt.
Compared with the standard table salt of later generations, the refined salt at this time still contained a large number of impurities. .
Such as sulfate ions, magnesium ions, calcium ions, etc...
Especially magnesium ions.
After this thing enters the human body, it will cause diarrhea, heart dysfunction and other abnormalities. For Wang Yue at this time, it is simply a fatal substance.
Previously, in order to save Wang Yue's life, Xu Yun could only deal with it with refined salt for the time being. Efficiency came first.
Moreover, the purpose of adding salt is only to dehydrate the ethanol and increase the alcohol concentration. There will not be too much residue entering the human body.
But now we need to inject normal saline, and it is foreseeable that this will be an extremely long-term treatment.
In this way, this part of the impurities seems a bit annoying.
Therefore, purifying sodium chloride has become a necessary and urgent step.
True.
There are many ways to purify sodium chloride, such as using seashells, coconut shells, and any kind of acidic fruit.
But don't forget.
Xu Yun came to this era with a task to complete.
The stronger the ability he shows at this time, the easier it is for him to gain Lao Su's trust.
Coupled with the background factors of the times, he also needs a certain status to do something - whether it can succeed in the end is one thing, and whether he has the right to speak is another.
Therefore, after careful consideration, he chose to make a generator by hand and use electrolysis to prepare sodium chloride.
After making up your mind.
Xu Yun pondered for a moment and said to Lao Su:
"Sir, intravenous injection requires something called physiological saline, which needs to be prepared in another way.
So could you please sir, prepare some things for me? "
"What do you need?"
"...These things can be a little pricey."
When Lao Su heard this, he waved his sleeves very proudly:
"Your life is at stake, and I have a rich family. It doesn't matter if you just say so."
Xu Yun nodded, turned over the paper with ghostly drawings on it, and wrote the required supplies on it:
"A piece of natural magnet is best shaped into this shape...
Then process the refined copper into thin wires, the longer the better... plus two copper blocks and a few copper sheets...
In addition, a half-meter iron shaft, wooden molds, tung oil, turntable, graphite, and utensils for water supply in Fuzhong are needed...
Then send someone to the sour plum shop in the east of the city to ask the store owner if he has any white stuff that can make ice. If so, buy some back...
By the way, the donkey pulling the mill is also ready. "
After describing the requirements, Xu Yun handed the piece of paper to Lao Su.
What he planned to build this time was a standard disc generator based on Faraday's electromagnetic induction phenomenon, which is the generation of electricity through magnetism.
The iron shaft is made into the rotor core, the copper wire is soaked in tung oil and wound around it as the winding, and the magnet is used as the stator. It is an operation that only requires hands.
What?
Are you asking about voltage?
U=kB∠nV, the voltage is equal to the coefficient multiplied by the magnetic intensity multiplied by the effective length of the rotor multiplied by the number of coil turns multiplied by the constant speed difference, which can be calculated in advance.
At the same time, the required precision of the copper wire is only five millimeters, which can be easily achieved even by ancient industrial standards.
Looking at the entire process, the biggest problem is not technology and craftsmanship, but production cost:
According to Xu Yun's design, the guaranteed cost of the entire generator is more than 200 copper coins, which is two hundred taels of silver.
Converted based on the concept mentioned earlier, it is almost equal to 200,000 in later generations.
And without a voltage regulator and distributor, what this kind of generator could do in ancient times was extremely limited.
To put it bluntly, this thing is basically the same as burning money.
So if you were to travel to an ordinary person's home, and you probably haven't tinkered with a generator yet, you would have to be hung up by your parents and beaten...
But now in order to save Wang Yue, Lao Su obviously won't care too much.
After getting Xu Yun's drawings, he immediately hired Mr. Xie to work the night shift.
Xu Yun rubbed his sore neck and returned to his cabin to sleep.
A lot of things happened today, and I lost a lot of energy and physical strength.
In addition, there is no way to explain in this era, so naturally I can only sleep quietly.
A night of silence.
.......
Early the next morning.
Xu Yun's ears suddenly heard a faint voice:
"Your Majesty, Your Majesty, it's time to get up in the morning..."
Xu Yun took a nap and rubbed his sleepy eyes.
After regaining consciousness, I suddenly felt something was wrong:
Although some people have called him to wake up in the past few days, most of them are a bit rude.
Either hammering the door or shouting, how can it be as gentle as today?
Then he put on his clothes and opened the door.
I only see this moment.
Yongzhu was standing outside the door with a somewhat reserved smile, holding water in both hands, without any hint of the casualness with which he said "Wang Mazi" yesterday:
"Prince, you're awake, please use water."
Xu Yun looked at him strangely and asked:
"Brother Yongzhu, what are you..."
"No, no, no, you're going to hurt the villain. Just call me Zhuzhu."
Hearing the words Yongzhu brother, Yongzhu suddenly became excited and said quickly:
"My lord, you don't know something.
The master issued an order yesterday to remove you from the slave status and add you to the list of guests in the mansion.
Now you are considered a guest, different from us servants. If you need anything, you can call me at any time. "
"Businessman?"
Xu Yun was stunned when he heard this, and then he understood.
Doorman.
Also called diners, they are a unique group in ancient times.
Most of them are wanderers or counselors without official positions. Their lord provides their daily necessities and will also contribute to their lord when necessary.
At the beginning, Lord Mengchang claimed to have three thousand diners. In "Water Margin", Chai Jin's manor also had a large number of diners staying.
In terms of nature, diners are "guests" and are much higher than "servants".
For example, Zheng Kuan, the leader of the nursing home, one of the four giants in the old man's house, is a kind of "Bin".
Therefore, the salary and status are much higher than that of the most senior servant.
It's just that in terms of intimacy with the master's family, he is inferior to Mr. Xie, Du Guan, Yue Lian and others. Each has its own advantages and disadvantages.
If Xu Yun remembers correctly.
Before Lao Su became an official, he also recruited dozens of retainers, because according to the literature, retainers were responsible for completing some aspects of the water transportation ceremony platform.
But now that Lao Su has retired, the number of guests staying in the house is estimated to be very small.
The empty east wing can also prove this point - that is the guest room, and theoretically all guests should be placed in that position.
Therefore, in addition to the necessary position of nursing home, there may be one or two disciples who have not been dismissed in terms of accounting. In short, the number will most likely not exceed three.
be honest.
Whether he is a guest or a servant, Xu Yun, who was born in a later generation, does not have high requirements for status, and naturally he will not boss others around.
He first asked Yongzhu to bring water into the house, took the towel and washed his face, and then said to Yongzhu:
"Brother Yongzhu...Hey, don't be impatient. Brother Yongzhu, listen to me first.
You were the one who rescued me from the well with the rope in the first place, so let's not be too arrogant. There is no need to be too harsh.
Well, if you think highly of me, I will still call you Brother Yongzhu.
As for me...just call me Brother Wang, just like calling me Third Brother. What do you think? "
The "Ge'er" in the Song Dynasty did not refer to the elder brother. It was a term that was biased towards the market, but also somewhat close.
Still taking "Water Margin" as an example:
In the episode where Wu Song furiously kills Pan Jinlian, the little boy selling pears in Yanggu County is named Brother Yun, and he can be regarded as a minor character with some roles.
Seeing that Xu Yun's words didn't seem to be fake, and at the same time the reply to the invitation at the sour plum shop yesterday made Yongzhu feel that he and Xu Yun had some kind of friendship.
So he hesitated for a moment, and finally tentatively said:
"Then I will call you...Brother Wang from now on?"
Xu Yun smiled heartily:
"become!"
After washing up, he went to the breakfast shed to have some breakfast.
Then he went to the east wing and met Lao Su, Wang Zhen and Wang Yue.
as expected.
After another round of wrangling, he finally convinced Lao Su and Wang Zhen to change his title from 'Wang Gongzi' to 'Xiao Wang'.
As for Xu Yun's title of Lao Su is still Lao Ye, after all, retainers are also considered subordinates.
Later, Lao Su told Xu Yun,
At midnight last night, he saw that Wang Yue had a low fever, and Xu Yun mentioned that allicin was difficult to store, so he used the remaining allicin to give Wang Yue a second dose of medicine.
While the condition was stabilized, it also meant that the first batch of allicin had been used up.
Therefore Xu Yun’s goal today is very clear:
Completed the mass production preparation of the second batch of allicin and allicin injection!
Then Lao Su took Xu Yun to another courtyard in the east wing. There was a pile of supplies Xu Yun needed placed in the open space in the courtyard.
Well, there's that donkey.
After entering the courtyard.
Lao Su pointed at these objects and introduced them aloud:
"Xiao Wang, this is a natural magnet, together with the iron shaft, wooden mold, and copper wire, I found a craftsman from the Artifact Making Bureau overnight to make it. Please see if it fits.
In addition, as you said, the plum soup shop does have some white crystal stones that can be used to make ice, and I also bought some in the first year.
Oh, by the way, the water delivery device you mentioned is also ready, that's the pile on the left. "
Xu Yun nodded slightly, and first walked outside the copper wire to check the accuracy specifications.
There was no insulating paint in ancient times, but both leather paper and tung oil could achieve substitute effects. Faraday also used leather paper in his first experiment.
The theoretical upper limit of the copper wire of a homemade generator is five millimeters, which is the width of half a fingernail. As a result, the thinner the better.
The size of the coil of copper wire prepared by Lao Su is about two millimeters. According to what he said before, this is the result of the craftsmen from the Manufacturing Bureau who worked overnight.
That is to say.
In this era, aside from the time-consuming and refined process, the processing accuracy of official industrial rapid mass production is about two millimeters.
Xu Yun secretly remembered this information in his heart, then turned around and came to the disassembled self-priming pump.
really.
As he had expected before,
Although this self-priming pump is not as sophisticated as later generations, it can still clearly see the operating principle of the suction pump, and...
Balance spring and mainspring.
He bent down, took the main joint of the self-priming pump and weighed it in his hand, turned his head and asked Lao Su:
"Master, I wonder what this thing is...?"
Old Su stroked his beard when he heard this, and a trace of pride appeared on his face. After all, this was his proud work:
"The name of this object is Suiyong, and it is a small object that I accidentally discovered when I was ordered to build a water transport instrument platform.
Just by accumulating power through the wheel knot, the water can be sent dozens of feet away, which is equivalent to the effort of several servants traveling back and forth. "
Xu Yun was silent for a moment and bowed his hands to Lao Su:
"His skills are almost divine."
His words didn't mean any flattery, they were all genuine admiration.
Although the principles of balance springs and self-priming pumps are very simple in the eyes of later generations.
But in this era—or until the 17th century, this was a barrier to human cognition. (Note: This is not because I care about it. The Tianheng system developed by Old Su was the prototype of mechanical watches in later generations. This is an achievement recognized domestically and internationally in later generations. If there is a mechanical watch, there must be a balance spring. This achievement is attributed to Hooker. The main reason is that it was too long ago and there is no physical evidence.)
This may be the wisdom of the Chinese ancestors...
After finishing his emotion, Xu Yun returned his mind to reality.
He first checked each device one after another, and then officially started to assemble the generator.
As everyone knows.
A DC generator is mainly composed of a stator and a rotor.
The main components of the stator are the base, main magnetic poles, commutation poles, end covers, brushes and other devices, whose main function is to generate a magnetic field.
The main components of the rotor are armature core, armature winding, commutator, rotating shaft, bearings, fan, etc.
Its main function is to generate induced electromotive force and electromagnetic torque, which is the core of DC motor energy conversion.
certainly.
If you want to travel through time, just make a simple device, it doesn't have to be that complicated.
The actual components include the stator main magnetic pole, armature core, armature winding, commutator and rotating shaft.
The basic principle of a DC generator is Faraday's law of electromagnetic induction. That is, if a conductor cuts magnetic lines of force, an induced electromotive force will be generated in the conductor. Teachers in high school physics classes should have demonstrated this.
Normally.
This kind of ancient generator needs to be powered by hand, which is like using a pencil sharpener in elementary school, and the faster, the better.
But don’t forget, there is a good thing like clockwork right now:
You only need to let the donkey first accumulate power in the spring, and then use a very simple torque to convert the elastic potential energy of the spring into kinetic energy to allow the motor to operate.
Xu Yun then wound the copper wire around the copper sheet, pressed the turntable underneath, and fixed the magnet on a separate stand.
Then the coil is placed in the middle of the magnet, the wires are connected end to end to form a closed loop, and the graphite acts as a carbon brush for conduction.
that's all.
A simple generator is all it takes.
Yes, it's that simple,
In fact, there is a lot of seemingly advanced knowledge in later generations, which was not difficult to restore in ancient times. There are two main difficulties:
One is its derivative use and storage. The difficulty of electrical appliances is much more difficult than that of simple generators.
The second is the process of recognizing this concept.
It's like generating electricity.
Not to mention Xu Yun's disc engine, when it's really extreme, you can generate electricity with just two fruits. Isn't that what Ubisoft's servers are like.
The ancients were unable to use electricity, not because their industrial level was insufficient, but largely because they were unfamiliar with the microscopic field - they did not know the concept of electric energy at all.
For example, Lao Su at this moment.
During Xu Yun's assembly process, he remained silent for almost the entire process because he could not understand what Xu Yun was doing.
Xu Yun didn't bother to explain. It was much easier to explain some concepts after seeing the phenomenon than to teach the concepts.
After tinkering with the generator, Xu Yun was not in a hurry to start it.
Because he has one more thing to do:
Prepare for electrolysis.
............
