The Last Alchemist

After bidding farewell to the Baron, Rosen did not go to the glass shop. He immediately turned around and rushed back to the small courtyard where he rented.

When he arrived at the yard, Annie just happened to be back. Unlike Rosen who was empty-handed, Annie carried back a large bamboo basket. The bamboo basket was full of moldy food, including oranges, melons, sweet potatoes, corn, and wheat. Each one had growths on its surface. It is covered with green mold spots and exudes a unique smell of mold.

Seeing Rosen, Annie smiled and said: "I bought it from the fruit merchant in the town. One basket weighs more than 30 kilograms, and it only cost a dozen copper sparrows. It's not cheap."

Rosen nodded with satisfaction: "Very good, it's almost enough. Let's pile it in the corner first."

After Annie put the fruits away, Rosen immediately said: "Annie, I discovered a very bad situation."

Annie was surprised: "Huh?"

Rosen explained: "I just went out and met the mayor, Baron Draco, and he told me that Dias gave him a magic mirror."

When Anne heard this, her expression immediately became serious: "There is actually a connection between Dias and the Baron?"

Rosen whispered: "It's not that simple. I also saw a lot of red spots on the Baron's arms. I felt it carefully and it was the same thing as Mary and Alice."

"Hiss~~" Anne took a breath of air. She immediately understood Rosen's concerns: "You mean, the Baron knew what Dias was doing in Caopo Village. It is even possible that the Baron acquiesced to him doing this. Made?”

Rosen nodded immediately: "This is the worst case scenario. But my father knows the Baron, and I have met the Baron several times before. The Baron is rough, generous, and can't hide his thoughts. Apart from being lustful, he has no bad deeds. If there is really a conspiracy, he will never look so natural when mentioning Caopo Village."

Anne nodded in agreement: "You are right. Draco is a warrior with some honor, so he should not be so vicious. The most likely scenario is that Dias knew that the Baron was sick, so he came He stayed in Caopo Village to find a cure for the disease. Because Caopo Village is the territory of the baron, he can get the protection of the baron, and the baron also hopes that Dias can succeed because of his illness. "

"You are right." Rosen concluded: "The only thing that can be determined now is that there is a strong connection between the Baron and Dias. Dias is probably hostile to us, and he must also know that we took him away Once he determines the location of Mary and Alice, he will definitely report us to the baron, and even make a big fuss about it, triggering panic among the townspeople. , even our own lives are in danger!”

"What should we do now? Do you want me to catch Diaz?" Annie's hand grasped the hilt of the sword again.

Rosen waved his hands repeatedly: "It hasn't reached this point yet."

He walked around for a few steps, his thoughts becoming clearer and clearer. After a few minutes, he turned to look at Anne: "It's too dangerous outside the town. Mary and little Alice must stay in the town."

Anne asked: "Do you want to move the place? I know there is an abandoned wooden house in the north of the city. The original owner of the wooden house was a hunter. When he went hunting outside the town, he encountered a griffin. After the hunter died, the owner of the wooden house committed suicide. Since then, there have been frequent rumors of ghosts in the wooden house, and no one dares to live there anymore.”

"Is there really a ghost in the house?" Rosen asked. There are real ghosts in other worlds. In the game, he often deals with ghosts.

"It used to exist, but I quietly removed it. Now the wooden house is safe. Every time I pass by the town of Sunderland, I will stay overnight in the wooden house. It is equivalent to a free hotel."

"Well, that's good, it can be used as an alternative. But now, the wine cellar in the yard is secret enough, and Annie and little Alice's condition can't stand it. I also need their cooperation in my research, so there is no need to move for the time being. "

Annie nodded in agreement: "Do you need me to do anything?"

Rosen has already thought about it: "Dias wants to inform the baron, either come by yourself or send a messenger. I want you to find a secret place to hide at the door of the baron's palace. Once you find that the situation has changed, rush back immediately to transfer Mary." Big sister and little Alice.”

Anne nodded solemnly: "I understand."

After saying that, she turned around and prepared to leave, but was stopped by Rosen: "Don't worry, don't worry. At this time, the entrance and exit of the town has been closed. Diaz's messenger can't get in. Let's have a good night's rest first and talk tomorrow. ”

Annie smiled sweetly: "Don't worry, I'm fine, I'm in good spirits. Besides, it's always good to be careful."

After saying that, she walked out of the yard.

Rosen had no choice. He originally wanted to go to the glass shop, but he hadn't had much rest since early in the morning. After thinking about it, he decided to regain enough energy before talking.

He went back to the room, after eating and drinking, and washing up, he lay down on the bed.

He was really tired. As soon as his body stuck to the bed, he fell into a deep sleep within three minutes.

After a dreamless night, Rosen woke up early the next morning, feeling extremely energetic. He first ate a big meatloaf for breakfast, and then went to the wine cellar carrying a freshly baked meatloaf and water.

In the wine cellar, Sister Mary and Little Alice were also awake and chatting.

Seeing Rosen, Sister Mary stood up hurriedly and called her "Sir", while little Alice shouted: "Good morning, brother."

Rosen looked over and found that little Alice's eyes were much brighter than yesterday, and her face was rosier. Sister Mary's mental state is obviously much better than yesterday.

It seems that a large part of the reason for the two people's poor condition is due to the poor living environment. Now that the living environment has improved and their bodies have been recuperated, their condition has improved a lot immediately.

This situation made Rosen feel relieved a lot. He stepped forward, touched little Alice's face, chatted a few words with Mary, asked about her health, and then put down the water and food. Don't worry. Leaving the wine cellar.

After leaving the wine cellar, Rosen immediately walked out of the yard, turned right and went to Savi's glass shop.

As soon as he entered the door, Rosen saw Fat Savvy sitting behind the counter and sighing.

Rosen walked over and asked with a smile: "Savi, you look like you have something on your mind."

Savvy looked up at Rosen and realized he didn't recognize him, so he asked, "Who are you?"

"Rosen Laplace, alchemist, the baron sent me to help you repair the magic mirror." While speaking, Rosen took out the ruby ​​ring and put it on the counter: "This is the baron's token."

After hearing the word "alchemist", Savvy's eyes lit up slightly. He raised his head to look at Rosen carefully, and saw a boy of fourteen or fifteen years old. A look of disappointment suddenly appeared on his face: "At your age, the most you can do is... How can I be a mere alchemist apprentice and be able to cultivate Master Parkland’s magic mirror?”

Rosen chuckled and asked instead, "Do you know why your glass lens is useless?"

Savvy shook his head blankly: "I don't know. I made the glass mold exactly according to the shape of the broken piece of glass. In order to avoid bubbles, I specially got a blower to increase the furnace temperature and extended it for a while. Times the melting time, there are indeed fewer bubbles, but it doesn’t matter if they can’t be removed. Even if there are some, they won’t be useless at all, right?

He seemed to have found someone to talk to, and he poured out all the doubts in his mind.

Rosen listened patiently, and when he finished, he said, "Can I see your glass studio?"

Savi still didn't believe it: "Do you really have a way?"

"At least it can help you clear the bubbles in the glass." As he said that, Rosen raised his hand and used elemental manipulation to form a weak whirlwind around his palm.

Savvy's eyes lit up: "Then come with me."

The glass shop has a backyard with a large wooden house. The wooden house has three doors. The door of the wooden house on the left is open. There is a large stove inside. There is a clay crucible placed above the stove. The crucible has a side opening, and you can see that there are still residues inside. with some solidified glass juice.

On the left side of the door, there are three pottery jars against the wall. The jars contain quartz, limestone, and soda ash, which are all raw materials for making ordinary glass. On the right side of the door, there are several molds placed on the ground. Next to it, there is a hollow iron pipe more than two meters long.

After a few glances, Rosen saw Savi's lens mold. He walked up, took the mold and looked at it carefully, and he roughly guessed the reason. He turned to look at Savi and asked, "Did you pour the glass juice directly into the mold and pour it?"

"That's right. The magic mirror lens is solid and cannot be blown. It can only be cast. Let me tell you, pouring glass is not a simple matter. If you don't do some special processing, once the lens cools down, it will 'bang' 'The ground cracked. Just for this step, I tried more than thirty times before I succeeded."

There was pride in Savi's expression, and he was very proud of his unremitting practical spirit.

Rosen couldn't help but laugh: "Isn't it just annealing? It also has special treatment."

Annealing eliminates internal stress, as everyone who studies materials physics knows.

Upon hearing this, Savvy was stunned for a while with his mouth half open, and his face lost all pride: "It seems that you are really knowledgeable. Can you tell me why I made new lenses based on the molds made from broken lenses? , why can’t it be used?”

Rosen smiled and said: "There are two reasons. First, the lens was deformed during annealing. Second, your mold is not accurate."

"Ah, I know about the deformation, but the deformation is very small. Does it matter?" Savi half understood.

Rosen asked: "Have you ever studied geometric optics?"

"What are you going to learn?" Savvy looked confused.

Come on, he definitely hasn't learned it.

In this case, Rosen did not explain the principle. He said, "This mold is useless. Bring the Baron's magic mirror."

Savi immediately complied.

After getting the magic mirror, Rosen looked at it casually and found that it was a Galileo-style telescope. The eyepiece was a concave lens, the objective lens was a convex lens, and the broken lens was a convex lens. The new lens that Savvy put on was greener in color, and there were ten more lenses in it. There are a few small bubbles. When looking through this lens, the light is distorted and the vision is blurry and dim. It is completely unusable.

Looking at the eyepiece, this lens is better, but not much better. There are no bubbles in the glass, but the color of the lens is yellowish and dark. When looking at the world through this lens, the field of view is obviously darker.

Another biggest problem is that the lens is too thick. Because light of various colors has different refractive index in the glass, the edges of things seen through this lens have a very obvious colored burr. Very uncomfortable.

This is chromatic aberration, a common problem in refracting telescopes.

Rosen was certain that in this world where telescopes had just been invented, there was absolutely no technology to eliminate chromatic aberration, and no one knew how to eliminate chromatic aberration. But Rosen knew that by combining lenses with different refractive indexes, chromatic aberration can be eliminated to a large extent.

Of course, this process still requires some calculations.

‘Should I give the Baron an ordinary telescope, or should I get a high-end one? Rosen considered it in his mind, and after a few seconds, he made a decision: "Forget it, it's too cumbersome to make composite lenses, and optical path analysis also takes time. Let's get him an ordinary one first. Save the good stuff later and use it to make money. !”

Thinking of this, Rosen suddenly raised his hand and smashed the lens of the magic mirror. The objective lens and eyepiece were all smashed, leaving no trace behind. The smash was very clean and neat.

Savvy was stunned. The flesh on his plump cheeks trembled: "What are you doing?"

Rosen said calmly: "Melt some glass juice out and do it again."

Savi swallowed his saliva and said, "Are you sure you can do it? Both lenses are broken. Let's first say that if the Baron blames me, I will tell the truth."

Rosen smiled: "Of course you can't, but I can."