By the Santai River, Yuwen Wenzheng and Yang Ji are in the workshop to check the operation of the hydraulic clock, which is a large-scale device as a technical verification, which has been running uninterrupted for more than a month.

It's just to keep it running normally.,The accuracy is too bad to be able to bear to look at directly.,According to the results of a daily school.,The daily deviation of this clock is close to half of the pillar incense.。

And the daily deviation is slightly different, which indicates that the operation of the whole device is not really uniform, in scientific terms, the "systematic error" is very large, and the fluctuating deviation indicates that the stability of the device is not good.

It is said to be a clock, but from the actual performance, it seems to be a toy, but Yu Wenwen is very satisfied, because he is not in a hurry.

First solve the problem of whether there is or not, put the device up to operate normally, slowly find out the problem in the process of operation, and then it is constantly adjusted, three months if it doesn't work, half a year if it doesn't work, and one year if it doesn't work for half a year.

What's more, now this hydraulic clock is for craftsmen to practice and accumulate experience through long-term operation, a clock the size of a house is actually unnecessary, this is not Qin Tianjian, and there is no need to simulate the movement of celestial bodies.

It took so much effort to build a huge hydraulic clock device, which is to let the craftsmen have the most direct experience, of course, the water-powered clock is not practical, so that the power of the clock can evolve, first hydraulic power and then gravity pendulum, if metallurgy can be done is to use a clockwork.

From large clocks to small clocks, from small clocks to pocket watches, and then the daily difference of clocks and watches is reduced to the minute level, and then to the second level, so that it is unknown how many years and months, or how much money it will cost to succeed.

"Envoy, with all due respect, the clock is of little use, so why waste manpower and financial resources." Yang Ji persuaded again, he had already elaborated his opinion before, thinking that the clock was flashy and unrealistic, and it did not have much practical significance for the army and the people.

"If you plough the fields, weave cloth, and march to fight, it doesn't matter if you have a clock or not, but when it comes to being of little use," Yu Wenwen still didn't repent, "Then it depends on where it's used." ”

"Please don't hesitate to give me advice." Yang Ji asked.

"In terms of alchemy, the reaction time is very important, and it can't be said that the time for burning a stick of incense is cloudy, and the burning speed of incense in all parts of the world, the sea and the north is different."

"Envoy, alchemy is an evil way, why bother believing in the so-called elixir of immortality among the monks," Yang Ji was excited as soon as he heard alchemy, "I miss Emperor Shizong of the Ming Dynasty, just because I am obsessed with alchemy"

'Return me to the Ming Dynasty, my Emperor Sejong!' Big brother, this is the Northern and Southern Dynasties! What are you talking to me about Jiajing? Yuwenwen complained in his heart, Yang Ji is good at everything, but when he talks about things, he likes "I Daming", this one has been 'coming' this era for nearly ten years before him, and he still remembers Daming to this day.

"Alchemy is not useless, isn't the gun\ medicine discovered by the monks first?" Yu Wenwen reluctantly enlightened the other party, "The same is true of Western alchemy, one of the important measures for studying various formula refining items is time. ”

He looked around to make sure that no one was nearby or eavesdropping, so he simply revealed the biggest secret: "Do you know the navigation of the West?" ”

"Western navigation? Xia Guan remembered that it was following the latitude and longitude, but what was that and the clock" Yang Ji was recalling, and suddenly came back to his senses when he said it: "The envoy wants to measure the longitude?" ”

"Exactly." Yu Wenwen nodded solemnly, at this moment, he turned into a one-eyed and one-legged pirate captain, with a fluffy parrot on his shoulder, directing the broken galleon to sail eastward in the Pacific Ocean, just as the crew was crying to sail back, a boundless land appeared on the sea level ahead.

"Envoy! For example, if it has not yet been pacified, the Turks are eyeing each other, the Goguryeo wolf is ambitious, the Tubo is about to rise, and the Southern Zhao "Yang Ji is more excited than him, "The voyage costs a lot, why bother to do such a thing that costs the people and money!" ”

Yuwen Wen coughed dryly, he didn't expect Yang Ji's view of navigation to be so negative, the other party seemed to be standing in front of Liu Daxia, this Ming Dynasty military squire is said to have burned Zheng He's chart, and now he is impassionedly accusing him of misleading the country and the people.

The importance of navigation is unquestionable, and although he has many arguments to refute Yang Ji, he finally decided to downplay: "This official wants to eat chili peppers!" ”

Yang Ji was stunned when he heard this, his mouth moved and he wanted to say something, but he couldn't say it, and he heard the other party say that he was looking for corn, sweet potatoes, and potatoes, and finally returned to normal, he knew that these three things were important crops.

"You're right, the world is undecided, and it is not wise to spend manpower and material resources to sail, not to mention that the official situation is not safe." Yuwen Wen can be regarded as agreeing with some of Yang Ji's opinions, he is now curled up in a small and sparsely populated state on the edge of the Yangtze River, and it is unknown whether he can save the lives of his family.

"But if you don't accumulate steps, you can't go a thousand miles, and if you want to have a precision timepiece that works, it may take decades to do it." He continued to elaborate on what he thought, "Even if our generation's dreams can't come true, leave a solid foundation for the next generation to realize, why not open up territory for my Chinese people?" ”

"It's a misunderstanding on the part of the lower officials." Yang Ji bowed, as soon as he heard that Yuwen Wen had a sailing attempt, he was worried that this person was so ambitious, and now he may not be sure of self-protection and thinking about sailing, which is really putting the cart before the horse.

"It's you who drill the horns, longitude and latitude, and the use is not only at sea." Yu Wenwen said with a smile, as a person with a modern education, he knows a lot about the use of latitude and longitude, "Besides, accurate time is indeed very important." ”

To be sure, for an agrarian society, clocks accurate to the minute were useless, because people didn't need to be "on time", and the folk use of time-related astronomy was to make calendars and let farmers know the solar terms.

Shi Nong Industry and Commerce, sunrise and sunset and rest, no one needs to be accurate to the minute of "punctuality", farmers get up when the rooster crows, go out to farm at dawn, rest at noon when the sun is too strong, continue to do farm work in the afternoon, and naturally go home when the sun sets, no need to look at the clock.

Craftsmen don't need it, every day is to work at dawn and finish work after dark, the same is true for merchants, even if the officials point to the Mao or go to the court, they all look at the time, and the army needs to know the hour at most, so there is no need for a clock in an agricultural society.

The European-style bell tower is now useless in the cities of the Central Plains, and the opening and closing of the city gates can be based on the omission and the sundial, and the drums are beaten every hour to transmit the sound, and at night the curfew is worth beating the time, and no one needs to look at this kind of thing.

The reason why Yu Wenwen wants to make a clock is simple: reality needs it. It's not just about measuring the longitude on a tall level, it's not just for the sake of making a sailing clock right away, it's purely for experimentation.

First add a certain milliliter (or gram) of substance A, and then add a certain milliliter (or gram) of substance B, and the reaction is a certain minute, and then the next step, which is a normal scientific experiment and a necessary parameter for the reproducibility of the experiment.

Volume and weight have been measured in this era, but time is very coarse, one stick of incense time, half of the stick of incense time, a quarter of the time of burnt incense, one cup of tea time, unless there is a standard incense standard tea, otherwise this is completely metaphysics.

There are also blacksmith shops, such as how much time it takes to forge ironware, annealing, and quenching, which is entirely based on experience, and this experience can only be passed down from master to apprentice from generation to generation, and there is no way to quantify it.

Another example is wind power rice, water conservancy rice, the device of rice can be scooped within a certain period of time, this is an important parameter to quantify the ability of rice, there is no frequency accurate to the minute, can only be counted according to a stick of incense, so that although it does not affect the use, but craftsmen can only rely on experience to further improve efficiency.

Or the hydraulic forging hammer evolved from the hydraulic rice machine, as well as the hydraulic bellows (water drain), the important indicator to evaluate their ability is how many hammers can be hammered per unit time, or how many times to go back and forth per unit time.

Of course, it is okay to use the carved leak and hourglass as a timing tool, but Yu Wenwen decided to use scientific weights and measures as much as he can, and strictly following the parameters is the right way to make the workshop.

Although it doesn't have much to do with conquering the city, or even whether there is a clock or not, accurate time is essential if you want to 'scientific' the production process of various workshops.

Yang Ji looked at Yu Wenwen who was in a daze and was a little strange, he didn't know what the person in front of him was thinking, so that he would smirk for no reason, although he still didn't understand why the other party was so obsessed with the clock, but Yang Ji still decided to go all out to get the qualified clock out.

And Lin Youdi looked at the two of them in a daze from a distance, he just wanted to report to Lord Lang, but he saw Lord Lang and Mr. Yang arguing about something, Lin Youdi knew that he couldn't come forward at this time, so he waited for the two of them to finish arguing before approaching.

He came to report the problem of the hydraulic clock, and what the Lang master asked was not afraid of problems, but he was afraid that he would not know the summary problem, so now is the time for him to report the summarized problems.

"And Mr. Yang Sima Yang said that Mr. Yang is solely responsible for this clock." Yu Wenwen said that Yang Ji's name in the mansion is 'Mr. Yang', and he will not let go of any opportunity to 'squeeze' Yang Ji's knowledge.

Another reason is that Yu Wenwen does not understand the structure of clocks, in that era he looked at the time either mobile phones or quartz clocks or electronic watches, and did not understand the structure of mechanical clocks at all.

Yang Ji listened carefully to Lin Youdi's report, the problem of unstable operation of this hydraulic clock is very simple: the accuracy of each component is not good, and the errors of each component accumulate to the back, resulting in extremely poor operation accuracy.

In particular, most of the parts are made of wood, and the bite between the ratchet wheel and the ratchet wheel is easy to be damaged, and the rotating shaft is also easy to wear, of course, because of the lack of previous experience, improper operation also caused unnecessary damage.

Lin Youdi summarized the opinions of the craftsmen, first of all, everyone is already familiar with the structure of the hydraulic clock, and the second is the solution: stop the machine and re-trim the parts.

Unqualified parts should be replaced, in view of the fact that wooden parts are easy to wear, I hope that some parts can be gradually replaced with iron, anyway, Lin You said that he talked for a long time, and a thousand words were combined into two words: ask for money.

For Yu Wenwen, what can be solved with money is not a problem, if the money is not enough, you can find a way, I am afraid that it will not be solved by spending money, if it is not priceless, he would have smashed the pot and sold iron to save a group of war horses.

Seeing Lin Youdi rushing to discuss the 'upgrading' with the craftsmen, Yuwen Wen turned to Yang Ji with a smile, and his smile was as kind as a black-hearted boss fooling employees to work overtime for free: "I heard that you are proficient in agriculture?" (To be continued.) )