Chapter 205 Microscope

After repelling Timothy's forces, the town regained its calm.

Roland selected three people from the Education Department of the city hall, plus two teachers to form a team, and went to Longsong Fortress with the books copied by Soraya. No matter how much effect he could achieve, he finally took the first step on the assimilation fortress.

Although Peiluo was not good at directing battles, he did perform well in administration. In just one week, two thousand recruited road repairers came to the town one after another under the escort of knights. If the second batch of ten groups of kilns hadn't been put into production, Roland would not have dared to make up his mind to build a hard road between the two places. Now, he finally has the opportunity to squander it.

This road was named Kingdom Avenue by Roland, and it was under the full responsibility of Construction Minister Karl. Its structure was exactly the same as the streets of the town, and it was a cement-stabilized gravel layer. In the era when there were no heavy vehicles, this road surface was sufficient for transportation tasks. Moreover, the drainage performance is good, and asphalt or concrete can be added according to the situation in the future.

In terms of construction materials, four mills driven by steam engines replaced manpower to crush stones, producing dozens of tons of crushed stones every day. The weak transportation capacity limits the further increase of output. It takes more than a hundred people to carry such a large number of stones in a horse-drawn cart for a day before they can be transported to the construction site.

In the kiln area, except for the four furnaces that maintain the firing of clay bricks, the rest of the blast furnaces have been put into the production of cement powder. After many component tests and the iron powder supplied by the mine, the cement produced in the town today is of high quality and stability. Much more than the original batch of products.

However, the transportation of gravel and cement powder by a large group of people also brought a lot of negative impacts to the town, the most serious being the problem of dust. In the afternoon, as long as there is a slight wind, you can see dense dust flying all over the sky, and the street has turned into a light yellow. Although most of the townspeople didn't mind this situation, for Roland, there was nothing worse than having to close the doors and windows in the hot summer.

Therefore, the carriage carrying cement and gravel was quickly installed with a cover plate to reduce scattering during transportation. At the same time, under the promotion of the ability of the leaves, the town was covered with shade in just a few days, and the sycamore trees with luxuriant branches were lined up symmetrically along the street, making it look green from a distance. In addition, Roland called on all the lords to actively sprinkle water to reduce dust, and this problem was quickly improved.

The straight-line distance between the two places is less than 70 kilometers. However, considering the need to avoid the foothills of the Impassable Mountains when building the road, the total length of this road is about 100 kilometers, and the estimated construction period is one year. With high-quality roads, some means of transportation can also come in handy, such as bicycles and steam cars.

In his conception, whether it is the development of education or road construction, they are all measures to connect the two places together, just like the integration of cities and towns vigorously promoted by later generations. After the development of the land between the two places is completed, Longsong Fortress and Border Town will be merged into a huge city. If he can turn the hills at the southern end into a part of the city, and then open up the edge mountains, there will even be an outlet to the sea.

Of course, opening up so much land required a larger population, and in order to cope with possible future wars, the city had to be self-sufficient in agriculture while also providing a large number of workers for industrial production. According to preliminary calculations, he needs to introduce about 100,000 people, and the largest city in Graycastle, the Royal Capital, only has about 20,000 to 30,000 people.

Roland set his sights on the northern and southern borders of Graycastle. These two places have experienced wars. When the cold winter comes, there will likely be a large number of refugees who lack food and clothing. All they need to do is provide food and warm shelter to absorb them into Border Town. Even the refugees from Yongdong and Wolfheart were under his consideration. For this reason, he also wrote a letter to the businessman Margaret, asking her to help find out the situation in these two countries.

...

After writing down the recent development plan, the prince folded the paper and put it in the drawer. After stretching, he decided to go to Anna's room to see how her lenses were being cut.

Ever since he understood the reason for Soraya's evolution, he planned to make a microscope that could observe cell structure.

If you can observe the wonderful microcosm with your own eyes, maybe it will trigger more witches to evolve new abilities, and no matter how bad it is, it will also arouse their interest in learning.

For the production of microscopes, two convex lenses for magnifying the target are not difficult. The difficulty lies in the focal length of each lens polished by hand. Therefore, it is a delicate job to match the eyepiece and objective lens, and it is necessary to repeatedly adjust the two lenses. distance.

After briefly explaining the principle of convex lens imaging, he gave Anna a few crystals of excellent quality and asked her to try cutting the lenses and measure their focal lengths. It has been three days now, Roland is full of curiosity about how far Anna has achieved now.

Walking to the door of Anna's room, Nightingale smiled at him and stood with her back against the wall, as if to indicate that she would not follow her. Since she reduced her invisibility time, Roland no longer had to guess the other party's whereabouts. When he was alone with Anna, , Nightingale will always choose to stand far away.

Pushing open the door, Anna was sitting at the table fiddling with a metal pipe.

"How?" He stepped forward and asked.

As soon as he asked, Roland was stunned. There were several instruments that looked like microscopes on the table, which were very close to the schematic diagram he had drawn.

"I made a few prototypes according to the drawings you gave me, and I can indeed see many details that are difficult to find at ordinary times." She raised her head, and her slender bangs slid down to one side. "I used it to observe the paper, leaves, And Jishui, and found that they look very different from usual.” Since the hot air balloon ride, Anna has stopped using honorifics when they are alone, which is also very relieved.

"How did you make it?" Roland was surprised. "The schematic diagram is just a rough outline."

"The outline is enough," Anna said with a smile, "You see, as long as the eyepiece and objective lens are fixed within a suitable distance, they can play a role in magnification, and then fix them with iron pipes, and the main body of the microscope is completed. When I tested the magnification effect of the lens, I found that the objective lens and the observation target must be kept within a certain distance to see a clear image, and it will be blurred when the hand shakes. It can also be seen from your schematic diagram that a shelf is needed to hold the lens The cylinder is fixed, and the platform carrying the target below can be moved up and down to obtain the best object distance." She paused, "The sheet at the bottom of the diagram is more difficult to understand, can you tell me what it is for? ?”

Roland glanced at the drawing, and realized that he had made a mistake. It was a reflective mirror, which was used to increase the light passing through the target. In this era, the mercury mirror had not yet been invented, and ordinary nobles still used bronze or iron mirrors to organize their appearance. In the back of the glass, a silver sheet is pasted to obtain a better reflection effect. Even without this mirror, as long as there is enough sunlight, the microscope can be used.

After he explained it in detail, he couldn't help feeling that Anna's amazing comprehension ability, just based on the rough outline drawing, made a close to complete finished product, which would never be possible for him.

Looking at the white neck that was exposed when the other party lowered his head to test the new lens barrel, Roland couldn't help but leaned forward and wanted to kiss it, but she pressed her hand on his face and pushed it away gently, "Later, Your Highness, I'm busy."

"Well... okay." (To be continued. If you like this work, you are welcome to come to Qidian to vote. Your support is my biggest motivation. Mobile phone users, please go to read.)