Wang Haoran would guide these people in their research work when he had free time, and sometimes he would find time to teach them some geometry knowledge in the evening. Pen, fun, pavilion www. biquge。 During the info period, he learned that one of the newcomers was a young man named Xu Xuan'an, who was the son of a farmer and knew a lot about farming, so Wang Haoran called him and asked: "Xuan'an, we are all merchants, and we have no chance to do official careers, but you are a farmer, why don't you take the road of the imperial examination?" ”

"The road to the imperial examination is for 10,000 people to fight for a single-plank bridge, I will definitely be squeezed down, knowing this, it is better to find another way out."

"Do you want to develop in the direction of landlords?"

"If there's no other way, that's all it can be."

"How about I show you the way?"

"What way?" Xu Xuanan wondered, is this the rhythm of driving himself away?

"Before you came, we were studying rice, and we have cultivated rice that can yield three stones per mu, but it is ......."

"Three stones?!" Xu Xuanan was surprised, "Really? Did I hear me right? A stone per mu is already a bumper harvest! ”

"You heard it right." Wang Haoran said lightly, "It's just that there are not many seeds cultivated, and you can only plant another acre of land." ”

"Then if you plant it a few more times, it will be fully promoted in Datang!" Xu Xuanan said excitedly.

"That's the plan, but I'm going to keep working on it, because there's still room for production to go up. Chen Jun: They have other tasks, would you like to take over this research? ”

"Of course, it's all up to you."

So Wang Haoran explained to Xu Xuanan in detail the research methods of miscellaneous rice and the idea of three-line seedlings. And took the previous research record to Xu Xuan'an and asked him to copy it himself.

At this time, it was almost the rice sowing season, and Wang Haoran had already asked the housekeeper Xie Changfu to purchase a few acres of land for planting hybrid rice, and the planting and three-line seedling research was handed over to Xu Xuan'an.

The others were envious when they saw that Xu Xuanan had received a research project so quickly, and it was a big project. They have increased their research efforts on the scope scale, and they all hope that after the research of this project is completed, they can also lead a research project on their own.

The research on the scope scale was coming to an end, and Wang Haoran transferred Wang Qihong, Wang Jingxiu, and Ma Jing out in advance. Ma Jingluo naturally asked him to study the problem of refraction, while Wang Jingxiu and Wang Qihong were good at arithmetic, and Wang Haoran had taught them the most thorough understanding of geometry. This time, in addition to teaching some physics knowledge, they also let them understand the laws of motion of objects under the influence of various forces. Wang Haoran plans to let one of them develop in the direction of mathematics and the other in the direction of physics.

After the completion of the research on the scope scale, Wang Haoran asked the newcomers Xu Mian, Yu Zizhao, and Yu Yuyao to make a simple sundial on the roof of the building, and Zhao Wenshan joined the research of the pendulum clock.

The production of the pendulum was relatively slow, and it took more than two months to assemble three, and the next step was debugging. Wang Haoran asked everyone to move the pendulum clock to the second floor, so that the three pendulum clocks could swing at the same time, and at the same time asked Chen Jie, who was on standby on the roof, to mark the sundial. The next day, when the shadow on the sundial walked to the mark again, Chen Jie shouted to the staircase: "It's here!" It's here! ”

The newcomers on the second floor, who were waiting for Chen Jie's signal, hurriedly grabbed the pendulum and stopped. Since the length of the pendulum of the three pendulums is not the same, the time to walk is also different, two have been walking for nearly thirty hours, and one has been walking for more than twenty hours. After Wang Haoran calculated the results according to the single pendulum law he learned in high school, he asked Chen Jun to adjust the pendulum of one of the fast-moving pendulum clocks by a certain size, and then let the pendulum clocks work at the same time. It took half a day to adjust the pendulum clock repeatedly according to the ratio of the other pendulum clocks to the actual travel time.

Wang Haoran asked someone to hang the adjusted pendulum clock on the wall, and asked Chen Jie to go up to the top of the building to make a mark, and wait tomorrow to see if the time is accurate, and let the other two pendulum clocks be adjusted by the newcomer.

"Cheng Yong, wait a minute, you will go to the factory to find Master Yu and ask him to mass-produce the parts of this pendulum clock. Chen Jun and Chen Jie will design the shape and structure, it looks solemn and noble, and whether it can be sold at a good price in the future depends on yours. Wang Haoran originally planned to install a time alarm device for the pendulum clock, but after thinking about it, it was too noisy and useless.

"Wenshan, you take Xu Mian and Zizhao to continue to study metals, and you can start developing alloys." The quality of the steel produced by the imperial court itself was far inferior to that produced in Wang Haoran's factory, because they could not raise the temperature of the furnace. All the steel used in the Munitions Division was purchased from the Chang'an factory, and some of it was made directly from the factory. After the arms division develops these submachine guns, it will definitely be mass-produced, if the factory can always represent the highest production quality of Datang, then there will be a lot of sweetness waiting for you in the future.

"Third brother, young master......"

"Call me Seventh Brother." Wang Qihong interrupted Wang Haoran's words and said, in such an environment, it felt very awkward to hear Wang Haoran call himself young master.

"Okay." Wang Haoran thinks it's okay to call it like this, in the past, Wang Haoran and his mother had to ask him to call Wang Qihong the young master, and there was a difference between respect and inferiority. He continued: "Third Brother, Seventh Brother, as well as Zhaoyun and Yu Yao, you come to study this. ”

Wang Haoran said, found a small wooden block, lifted it to a certain height, and then let go of his hand and let the small wooden block fall to the ground, and then continued: "I want you to study the relationship between the height of this small wooden block and the time it takes. ”

"That's all?" Yu Yao said.

"That's all! But it would be great if you could figure it out in three months. ”

"No, no, no...... I mean, that's all you can know? Is it necessary to stipulate what materials are used, how big things are used, etc.? ”

"No, that's enough, because it doesn't have much to do with the size or weight of the object." Wang Haoran plans to use this experiment to let them experience it.

"Impossible, right?" Yu Yao was skeptical.

"Shall we do an experiment?" Wang Haoran proposed that he himself would like to do a Chinese version of the experiment of "two iron balls landing at the same time".

So Yu Yuyao went outside to find a large and a small stone and took it to the roof, while Wang Haoran and others gathered downstairs to observe.

"Look at it! I put it. Yu Yuyao shouted to the people below, and after speaking, he carefully adjusted the height of the two stones, trying to keep them at the same level.

"Knock ......" two stones fell to the ground.

"How?" Yu Yuyao on the roof of the building shouted curiously.

But no one answered him.

"Did it land at the same time?"

"Seems to be, but I'm not sure."

"I don't see it."

……

Everyone was talking, Wang Haoran was speechless, these people are too serious, right? Do you have to land two stones at the same time to be called the same landing? Forget it, let them tinker with their own, tired.

"Haoran." Wang Jingxiu called, "I don't think the theory you just said is wrong, but in this case, isn't it too simple for you to let us study?" Measure the height and use the pendulum clock to record the time, so as to calculate the speed, then the relationship between the height and the time will come out? ”

"It's not that simple, the speed at which the stone falls is not constant, but faster and faster."

"This ......" Wang Jingxiu didn't doubt Wang Haoran's words, so he was also in trouble.

"If that's the case, can you still study it?" Wang Qihong also asked.

"How could it not be? You think, no matter how high any object is, as long as it is the same height, the same time it takes to fall to the ground, so it seems that there must be a certain relationship between height and time, as long as you find out this relationship. ”

"Don't just think about landing vertically from an object to find out, maybe it could be the same." Wang Haoran threw the stone in his hand in the horizontal direction as he spoke, and he could only say so much, and if he said it again, the formula for free fall would come out.

After arranging these people, Wang Haoran came to the previous hybrid rice experimental field, although several high-quality hybrid rice have been developed, but Xu Xuan'an has just been in contact with it for a short time, and if he wants to study the three-line seedling method as soon as possible, Wang Haoran still needs to follow up.