Although the structure of the clock is very complicated for Sun Xian now, the difficulty is greatly reduced after having the water transport instrument platform as a reference.
Once the power problem is solved, there will not be much difference between water transport instruments and clocks.
Some people even say that the birth of clocks was based on the water transport instrument platform. For example, there is a part in a clock called the pallet fork.
Isn’t this name very strange just by looking at it? The main function of this thing is to maintain the movement of the balance wheel by retracting and releasing it.
Isn’t it very similar to capturing Meng Huo seven times, one capture and the other?
With the strong manufacturing capabilities of the mechanical workshop, although there were many parts for the clock, they were all made quickly.
At the same time, Handu also encountered the next problem, which was the counting problem.
"There are twelve hours in a day, so why not divide the disk into twelve parts, each part representing an hour." Sun Xian suggested.
Although the clocks Han Du had seen lasted twelve hours, that is, six hours. But he thinks that's because of Westerners' timekeeping habits.
Since it is a Ming Dynasty man-made clock, there is no problem in making the twelve hours according to your own habits.
Unexpectedly, Yu Qian firmly opposed it.
"no!"
"Why not?" Sun Xian looked at Yu Qian puzzled.
Yu Qian directly drew a circle on the picture and divided it into twelve equal parts. He looked at Sun Xian and said, "Senior Brother Sun wants to make the clock dial look like this, right?"
"That's right." Sun Xian nodded repeatedly, that's what he thought.
"One day can be divided into twelve hours. It is true that it can be divided like this, but how should the time between each hour be expressed?" Yu Qianji continued to ask.
This is still
It's not simple... Han Du didn't even think about it and said directly: "Then continue dividing and divide each hour into several parts. Even the time between each minute can be divided again."
Yu Qian nodded slightly and said with a smile: "Teacher, if you divide the time three times in a row like this, you can indeed get an accurate time. But in this way, another problem will arise."
"What's the problem?" Han Du didn't think there was anything wrong with his statement. After all, he had seen clocks.
"The question is, how many parts should be divided into each hour?" Yu Qian asked the question meaningfully.
Han Du frowned slightly after hearing this. He knew that of course it was divided into sixty parts. But since Yu Qian raised this issue, it is obvious that he has his own ideas. So Han Du didn't speak, and was going to see what Yu Qian had to say first.
Sure enough, Yu Qian glanced at the faces of the teacher and Sun Xian, and continued: "If one hour is divided into twelve parts, and each part is further divided into twelve parts, it may not be enough to mark the precise time. I want to To get a precise time, we need to continue to divide it.”
"This..." Sun Xian shook his head repeatedly after hearing this, and sighed: "It's definitely not possible to continue dividing."
Facing the gazes of his husband and Yu Qian, Sun Xian said with certainty: "Every time you divide it, the complexity of the mechanical structure will increase significantly. Three times is already extremely difficult. If it is divided again, even once, I will Some worries cannot be created at all.”
Well, before the problem raised by Yu Qian was solved, Sun Xian blocked another road.
Yu Qian nodded lightly and said helplessly: "Since it can only be divided into three times,
, then if you want to improve the timing accuracy, you can only divide a few more portions each time. "
"Then let's divide it into sixty parts." Han Du stopped waiting for the two of them to think about it and said directly, "One hour is equal to one hundred and twenty points, and one point is equal to sixty breaths."
Sun Xian's eyes lit up, and he nodded in praise: "It's really good to use minutes and breaths to measure. In the past, everyone always talked about how many breaths, but no one has ever quantified it."
Yu Qian shook his head and objected: "It still doesn't work."
"Why not?" Han Du was puzzled. What he was talking about was the time counted on the clock. Why was it wrong? Could it be that all the clocks I have seen are fake?
Yu Qian doesn’t know how old he is
What was the teacher thinking in his mind? He picked up the pen and started to calculate.
"If an hour is divided into one hundred and twenty minutes, then each minute is sixty breaths. If the pointer representing breaths rotates once to equal one minute, then only sixty points can be marked on the entire disk. Then when How do you express an hour? Do you want the hand representing minutes to rotate twice?"
"This won't work, it will cause chaos."
Han Du frowned and agreed with Yu Qian's view. If the proportions are inconsistent, it will indeed become confusing.
"Then what do you think we should do?"
Yu Qian heard this and said: "The portions must be consistent. I think it is best to divide them into sixty portions."
This will keep the count consistent...
But Han Du also had his own thoughts in his heart. He always felt that this was inconsistent with his habits and was very awkward.
After a moment of silence, he said: "In this case, each breath is still a bit long..."
This is still a long time... Yu Qian and Sun Xian's confrontation
After a quick glance, they all felt that this was enough, but they didn't expect that the husband was still dissatisfied.
Han Du ignored the two of them and continued: "Then just divide each hour into two parts, so that's enough?"
This is indeed possible, but Yu Qian has doubts in his heart: "Teacher, if this is the case, wouldn't it mean that we have to separate day and night?"
"Then separate." Han Du waved his hand.
"But in this case, what should we do with the divided hours?" Sun Xian also disagreed with his husband's method, "Can't they all be represented by one hour? In that case, wouldn't it be more confusing?"
"Ahem..." Yu Qian didn't wait for Han Du to speak before he put forward his idea: "Teacher, why not divide the disk into one hundred and twenty parts? Isn't that okay?"
Han Du rolled his eyes at him, "What about every minute? Could it also be changed to one hundred and twenty breaths?"
"Yes!" Yu Qian nodded.
What the hell!
The more Han Du listened, the more awkward he felt. He shook his head and rejected Yu Qian's opinion: "If an hour is divided into two parts, let's just call it hour. Use numbers to distinguish it, one hour, two o'clock, three o'clock... and so on. .”
"this......"
Yu Qian looked at Sun Xian. Both of them understood that Han Du was resolute and no longer insisted.
"Okay, but how do you differentiate between day and night?"
Han Du touched his chin and thought for a moment, "Then let's add another part to represent day and night."
Sun Xian reluctantly nodded in agreement. This was not a difficult task for him.
After Han Du made the decision, the three people immediately began to manufacture the parts one by one.
A few days later, a large clock three feet square appeared in front of the three of them.
it
The casing is made of brass, and there are three hands of different lengths on the dial. At Han Du's request, the hands were exactly the same as the clock's hands.
There is a key-like rotating shaft on the left and right sides, and the right side is used to tighten the spring to generate continuous power. The left side is used to adjust the time for synchronization.
(Remember to bookmark it for next time reading!)
