Establishing units and standards for some new physical quantities is what Li Zexuan has always wanted to do. In addition to these, Li Zexuan plans to let Yanhuang Academy do the standard setting of some new technologies in the future.
Looking back on the previous life, in order to contain the rise of China, a certain superpower launched a trade war spearheaded by a technology war. Some international societies and technical standards committees wanted to exclude outstanding enterprises from the motherland in an attempt to collapse the high-tech industry of the motherland. At that time, although Li Zexuan was angry, others were soft-spoken and had limited abilities. But in this life, Li Zexuan has the ability and more status. It is necessary for him to promote the development of China's science and technology and let China's scientific and technological strength stand on top of the world!
Maybe his generation can't do it, but he can lay a solid foundation for future generations.
This is the reason why Li Zexuan has to be busy and tired even though he can just eat and wait for the rest of his life!
He not only wants to build a military power, but also a technological power! !
"Chief Shan, are these ammeters and voltmeters specially used to measure current and voltage?"
Li Tai asked with a look of surprise after hearing about Li Zexuan's third trump card project.
Li Zexuan nodded and said: "That's right! Any physical quantity must have a measurement scale and a quantitative measurement tool. If we want to develop more precise and complicated integrated circuits in the future, it will be impossible without ammeters and voltmeters. ! In addition, we also need to make instruments specially used to measure resistance! So Qingque, we have a heavy burden on us!"
Li Taishen nodded with the same feeling, then frowned and said, "But Chief, how should I make an ammeter and voltmeter?"
Li Zexuan knew that it would be a bit embarrassing for a child who had just been exposed to electricity for less than a year to make ammeters and voltmeters, so he drew a sketch on rice paper and gave some advice:
"Here, Qingque, look! We can use the principle of electromagnetic induction to make an ammeter. When a current passes through it, the current passes through the magnetic field along the spring and the rotating shaft. The current cuts the magnetic induction lines, so under the action of the magnetic field force, the coil Deflection occurs, causing the shaft and pointer to deflect.
Since the magnitude of the magnetic field force increases as the current increases, the magnitude of the current can be observed through the deflection of the pointer. As for the voltmeter, we can get the current through the above principle, and then connect a resistor with a known resistance in series, and multiply the current by the voltage scale of the resistor! "
The ammeter Li Zexuan mentioned is called a magnetoelectric ammeter, which is the kind often used in modern school laboratories.
Li Tai nodded frequently as he listened. After a moment of pause, the little fat man asked: "Chief, where did we get this resistor with a known resistance?"
This question stumped Li Zexuan. If it were in modern times, if you asked him to get a resistor with a known resistance, wouldn't it be easy? He can get as much as he wants, but this is in ancient times. Most people in this era don't even know what resistors are. Where do you ask him to get some resistors of known resistance?
After pondering for a long time, Li Zexuan finally said: "Since we don't have a resistor with a known resistance, let's set a standard ourselves and let the workshop forge a steel block with one inch in length, width and height, and use it as a standard of one ohm. Resistor, to make a voltmeter! With the voltmeter and ammeter, we can measure the resistance of all devices~!"
After all, it is still a matter of standards. Many standards in this era do not exist, so he can only create standards, otherwise a lot of follow-up work will not be able to proceed~!
When Li Tai heard this, he was deeply impressed and said: "The mountain leader is wise!"
Li Zexuan smiled and said: "Qingque, you should encounter many similar problems in the future. You must think divergently, dare to think, and dare to do. Otherwise, your future achievements will never be better than being a teacher, because your knowledge You learned everything from me. Only if you dare to forge ahead will you be able to surpass me!"
This guy is painting a pie for Li Tai again. To be honest, no matter how good Li Tai is, no matter how hard Li Tai works, he will still be unable to surpass Li Zexuan in engineering. Even if there is a chance, the chance is only 0.0%. Zero zero one!
After all, this guy has hundreds of years of engineering knowledge in his head. How can Li Tai surpass him?
But Li Tai definitely doesn't know these inside stories. The poor kid is nodding his head enthusiastically and saying: "Tai will remember the teachings of the mountain leader!"
Li Zexuan nodded with "a look of relief" and said, "Yes! Go ahead~!"
Li Tai stood up, cupped his hands towards Li Zexuan, then turned and left with high spirits!
"Tsk tsk! No wonder the teachers in the previous life were so fond of pouring chicken soup for the soul into their students, because it really works~!"
Looking at the back of Li Tai leaving with his head high, Li Zexuan sighed in a low voice.
If Li Tai heard what he said, he would have to vomit blood!
"Uncle Fu, could you please arrange for someone to make something for me during these days~!"
After helping Li Tai solve his doubts, Li Zexuan came to Uncle Fu's office and said.
"What does the young master want to do?"
Fu Bo stood up and asked with a smile. Li Zexuan took out a stack of drawings and said with some embarrassment: "Uncle Fu, what we are doing this time is more complicated. Please take a look first. If there is anything you don't understand, I will explain it to you in detail later~"
Fu Bo nodded, and then his entire attention was immersed in the drawings.
After a while, the look of surprise on Fu Bo's face became more and more intense. After reading the last drawing, Fu Bo couldn't bear it anymore and said, "Master, are you going to build a car?"
Li Zexuan nodded and smiled: "Uncle Fu has great eyesight! Yes, I do want to build another kind of car!"
Uncle Fu frowned and said, "But what kind of car is this? Why does it look bigger than a carriage?"
Li Zexuan smiled and replied: "I call it an electric car. The principle is similar to that of an electric bicycle. It uses batteries and motors to drive the wheels to move forward quickly, but this electric car is larger and can carry The more people there are, the more electricity is needed!”
Fu Bo paused and said doubtfully: "Master, this idea is certainly a good one, but this will make the car heavier. If more people are loaded, it will be difficult to drive the car!"
Li Zexuan shook his head and said: "Uncle Fu, there is no need to worry. The motor of this electric car is definitely different from the motor of an electric bicycle. It has greater power and greater traction. Your boss can arrange for someone to make it according to the drawings." ! But you must remember to keep it secret from Shaoning and Miss Mo!"
Hearing this, Fu Boqi asked: "Master, why is this?"
Li Zexuan smiled and said: "Uncle Fu, this car is my wedding gift to Shaoning and Miss Mo. I plan to give them a surprise when the time comes!"
Yan Shaoning is also his good brother after all. When a good brother gets married, this gift must not be shabby, so Li Zexuan thought of this.
When Uncle Fu heard this, he suddenly realized. He nodded and said: "That's it! Don't worry, young master, I will definitely arrange for someone to help you build the car and keep this matter strictly confidential!"
His old face was full of relief. Li Zexuan and Yan Shaoning were one of his current bosses and the other was his former young boss. Uncle Fu had always had deep feelings for the Yan and Li families. Li Zexuan was so interested in Yan Shaoning's marriage. Heart, this proves that Li Zexuan really regards Yan Shaoning as a brother, and Uncle Fu is certainly happy!
At the same time, Uncle Fu became more and more concerned about the car-building matters explained by Li Zexuan. He secretly thought that he must be very alert and keep an eye on the people below to build cars!
"Ke'er, I heard today that countless people are flocking to Yanhuang Bank to save money. I wonder if you can still be busy there? Do you want my father to send you more people?"
In the evening, Li Ke was unexpectedly recalled to the palace by Li Er. After dinner, Li Er rarely started to care about Li Ke's daily work.
Li Ke was immediately flattered. He cupped his hand and said, "Thank you very much, Father, for your concern. However, I can definitely handle the bank side. Moreover, at noon today, the mountain chief told my son that I would pay for the Yanhuang Bank." Recruit a group of guards, after all, the bank has too much money, and if there are lawless people coveting it, the loss will be too great!"
Li Er nodded thoughtfully and said, "Well! This arrangement made by Marquis Yong'an is very appropriate, so just follow his wishes! Father, I won't do anything unnecessary!"
"What did your father say? It would be a great honor for me and the mountain chief that you could personally inquire about the affairs of the bank!"
Li Ke quickly cupped his hands and said.
Although this was somewhat complimentary, it was also somewhat sincere. After all, Li Er had not been very involved in bank affairs before.
"Haha! Stop complimenting my father. I'm tired of hearing such words!"
Li Er waved his hand, said with a smile, and then asked:
"Ke'er, now people are flocking to Yanhuang Bank to save money and earn interest. Can Yanhuang Bank be able to absorb so much money? Can it pay off the interest promised to the people by then? It was originally free for the people. Exchanging Tang Yuan is already a profit-sharing measure that the bank withdraws in order to benefit the people. Now the bank not only does not charge the fees for keeping the money for the people, but also pays interest to the people. If this continues, won't Yanhuang Bank be unable to make ends meet?"
Li Ke pondered for a moment and said: "Father, Yanhuang Bank will never lose money! The annual interest rate on deposits we give to the people is 175, and the annual interest rate for lending money to private businessmen is 8. We collect 100 yuan from the people If all the money can be lent to merchants, Yanhuang Bank will be able to earn 625 money a year with these 100 money!
One thing that cannot be ignored is that this hundred thousand dollars does not belong to us, but to the common people who come to save money. In other words, our bank has not used the capital at all, but can rely on the one hundred dollars saved by the common people in one year. Earning 625 guan from 100 guan is a completely costless business, and the profit is not low at all! Where can I find such a sure-profit deal? How could our bank lose money? "
There are many types of operating income of modern banks, including deposit and loan interest spreads, handling fees, agency fees, investment income, etc., but the most important thing is to rely on deposit and loan interest spreads, which is the foundation of the bank. In the same way, the main way for Yanhuang Bank to make profit today is the interest difference between deposits and loans!
Hearing this, Li Er nodded thoughtfully, and then he asked: "What you just said makes some sense, but if there are too many people coming to save money, there will not be enough businessmen coming to Yanhuang Bank to borrow money." With such a huge amount of money deposited, for example, if the common people deposited 100 yuan, but the bank only loaned out 100 yuan, wouldn’t Yanhuang Bank still lose money?”
Being able to say these words proved that Li Er had done enough homework before, otherwise he would not have asked such a pointed question.
Li Ke couldn't help laughing at this time: "Father, there is no need to worry! This policy of no commission for exchanging money and earning interest on deposits was first implemented on a pilot basis in Lantian County, mainly because of the businessmen in Lantian County It is very active. Various large and small shops are springing up like mushrooms after a spring rain, appearing in the markets of Lantian County. Businessmen from surrounding counties are even more frequent. In this case, the businessmen of Lantian County are in need of money. , naturally much higher than merchants elsewhere!
At the end of every month, Yanhuang Bank in Lantian County will have a money shortage problem. Now that it has received active deposits from people, the bank is expected to never have a money shortage again in the future, which is very beneficial to the bank's expansion. Prior to this, Er Chen carefully calculated with the bank's staff. According to the current business volume of the bank, as long as the deposits received are less than 500,000 yuan, there is no chance of losing money, and even making a lot of money! "
"Oh? Ke'er, are you so confident?"
Li Er couldn't help but asked with a smile.
Li Ke replied: "Of course, father, please don't forget that although the loan interest rate of our bank is higher than the deposit interest rate, compared with other large private loans and interest rates, our bank charges levied when borrowing money from businessmen. The interest rate cannot be lower. Based on this alone, as long as businessmen are short of money, they will definitely come to our Yanhuang Bank to borrow money. So there is no need to worry about whether they will lose money!"
"Well, the annual interest rate on loans from Yanhuang Bank in Lantian County is only 8. Compared with private loans, this interest rate is indeed very low!"
Li Er had some understanding of folk affairs and nodded after hearing this.
The annual loan interest rate of 8 may seem scary to modern people, but to ancient people, this interest rate was simply too cheap! In this era, if the monthly interest rate is 10, it can be called the "conscience of the industry." If the monthly interest rate is 10, the annual interest rate will be hundreds, which is a bit too expensive!
Especially during the Sui and Tang Dynasties, the imperial court set up a special fund called "Gongshi Capital" for official loans, whose functions were somewhat similar to modern banks. The capital of the public house is managed by the governor of each state. It lends 50,000 capital and charges an interest of 4,000 yuan per month. The annual interest is about 100.
Therefore, Yanhuang Bank's lending interest rate is simply a "rain from heaven" to those businessmen!
