The Last Alchemist

When Rosen walked near the glass shop, he saw Savi standing at the door of the glass shop from a distance, looking around.

At first, there was a trace of worry on his face. When he saw Rosen, his small eyes suddenly narrowed into slits. He walked quickly towards Rosen and took the package from Rosen's hand: "Master , please come in quickly, please come in quickly.”

Rosen nodded and walked towards the glass shop: "I mentioned the problem of sunlight dispersion yesterday, have you verified it?"

Savvy's eyes suddenly flashed with strange light, and he nodded like he was pecking rice: "Verified. Master, I followed the method you taught and put a bronze mirror in the water. When the sunlight hit the glass, colorful patterns appeared on the wall. Reflective.”

"Yes, very good. Did you perform optical path analysis afterwards?"

"After analysis, the results are very consistent with the actual experiments. Master, this is really amazing. I never thought that sunlight contains such wonderful mysteries. I..."

Savvy was beaming as he spoke, and the small eyes on his fat face were shining brightly.

Seeing that he was about to make a long speech, Rosen raised his hand to interrupt: "Okay, let me ask you, have you prepared everything I asked you to prepare yesterday?"

Savi immediately said: "Everything is ready, nothing is missing. I have traveled all over Sunderland and selected the best quality medicines."

Rosen was very satisfied.

After Savi closed the door of the glass shop, he said: "Today, we have to do two things. The first one I will complete myself. The second one, I need you to be my assistant."

"Yes, Master, I will go all out."

"Very good." Rosen handed a piece of parchment to Savi: "I am going to build a magic mirror without dispersion. This kind of magic mirror requires a very special lens. I have written the principle of the lens on the parchment paper. All you need to do is calculate the specific size of the composite lens, any questions?”

Savi took the parchment and looked at it intently. After looking at it for a few minutes, he couldn't help but admire: "Wonderful~ It's really wonderful~ Master, your wisdom is really otherworldly."

At this time, the two had already walked to Savi's studio. Rosen saw the medicines prepared by Savi, and he began to check the quality of the medicines one by one. After hearing Savi's praise, he turned to look at Savi with a half-smile: "Flattery can't help you complete your calculation task. If you don't hurry up, you won't have enough time."

Savvy was startled and immediately said: "Ah~ OK, I'll start right away."

He picked up his quill and began to count on the parchment.

Rosen was not idle either. He continued to check the materials prepared by Savi.

'It's okay, everything is correct, but the quality is average. But I can't blame Savy. He can find all these things in Sunderland, which is beyond my expectation. ’

Overall, he was quite satisfied.

After confirming that everything was complete, Rosen first picked up the pottery jar filled with olive oil from the ground and placed it on the glass workbench aside. Then he activated his alchemical power and immersed his mind in the olive oil.

This process only lasted a few minutes. Then, Rosen took out a clean glass and gently poured the olive oil into it. He got half a cup of pure transparent, colorless and odorless viscous liquid.

This thing is glycerin.

On Earth, the method of extracting glycerin is very simple, because vegetable oil contains a large amount of glycerol, so you only need to heat the vegetable oil to a specific temperature and then condense it. In this world, this matter is just a 'purification' process for Rosen. After possessing the talent of three-level friend of elements, doing this matter is effortless at all.

After obtaining the glycerin, Rosen poured gryphon acid into it.

Griffin acid is a mixed acid of sulfuric acid and nitric acid. The original concentration was about 10%, but Rosen evaporated most of the water molecules in it, raising the concentration to more than 90%, becoming a mixture of concentrated sulfuric acid and concentrated nitric acid. , after adding glycerin to this liquid, it only needs a little heating and catalysis to automatically react to generate nitroglycerin.

For safety reasons, Rosen did not heat it, but used alchemical power to catalyze it.

Because this reaction would have already happened, what Rosen did was just give it a small push, so the synthesis process this time was much easier than the previous one in the cave.

After a while, a large ball of light yellow oily liquid appeared at the bottom of the glass cup, about 300 ml.

300 ml of nitroglycerin is a powerful weapon. It will explode in the glass. The splashed glass fragments will be enough to seriously injure Rosen, and may even kill him.

He moved more and more cautiously.

Activate the alchemical power again, gently and slowly separate the nitroglycerin, put it in a clean glass, then take out the diatomaceous earth that Savi found and mix it into powder in a ratio of 2:1.

After it was done, Rosen was slightly relieved, but he did not rest, but immediately took out the lead weight.

After nitroglycerin is passivated with diatomaceous earth, its performance is very stable. It can be detonated using alchemical power, but it takes about 1 second. This time is not long, but in a tense and fierce battle, 1 second may be the difference between life and death. of distinction. Not to mention, it will be difficult to concentrate during the battle, and the detonation time will definitely become longer.

It would be embarrassing if the enemy is right in front of you but his big troll is slow to spray.

Therefore, Rosen needed a detonating explosive that was stable but also very sensitive. Rosen had already thought about this thing, which was lead azide, a bullet detonator commonly used on Earth.

Now, with lead blocks in hand and a lot of nitrogen in the air, he only needs to design the reaction process and catalyze it with alchemical power to get the finished product.

Do it as soon as you think of it.

Rosen activated the alchemical power and picked up the feather pen again. While sensing the properties of the two elements, he continued to perform quantum mechanics calculations.

On the other side, the fat man Savi was also calculating desperately.

However, unlike Rosen's leisurely attitude, he scratched his head and looked confused. He had been calculating for almost half an hour, and he had made almost no progress. He was so anxious that sweat covered his forehead.

Another half an hour later, Rosen finished the calculation and began to synthesize it.

Savi was still thinking hard. He bit off all the feathers on the quill pen and filled several sheets of parchment, but there was still no substantial progress.

Time passed by minute by minute, and Rosen methodically implemented his expected plan. About 4 hours later, at one o'clock in the afternoon, the first bullet was formed.

This bullet is cylindrical, the thickness of a thumb, with a rust-proof steel shell in the lower part and a special dense papyrus in the upper part. The steel shell contains propellant, and above the propellant is a layer of dense fiber filler to ensure airtightness. Above the filler are small alloy particles composed of steel, lead, and mercury, each of which is about half the size of a rice grain, and there are about 40 of them.

The structure of this bullet is not something Rosen came up with out of thin air, but was made by imitating Earth shotgun bullets, so there is no need to worry about the problem of immature technology.

It is also worth mentioning that the alloy particles, adding steel, is to ensure the hardness of the alloy particles, and adding lead and mercury, two heavy metals, has two purposes.

The first is to increase the mass of the bullet to obtain greater kinetic energy out of the muzzle, thereby increasing the stagnation effect of the bullet on the enemy. The second point is more critical, that is, the metal mercury is the nemesis of werewolves.

For ordinary werewolves, mercury is a highly toxic substance. As long as a drop of mercury enters the blood circulation of the body, half of the life will be lost. The resistance of high-level werewolves will be better, but there is no essential improvement.

The wheel of the spiral spray gun can hold six bullets. After completing one, Rosen continued to work hard.

With the experience of the first bullet, all the materials were ready, and Rosen was faster. After about 10 minutes, the second bullet was successful, and after another 6 minutes, the third bullet was successfully made. After that, it stabilized at a speed of one bullet every 6 minutes.

At this time, Rosen had entered the state. His hands flew, and from time to time he activated the alchemical power to assist. He was busy for more than 2 hours and even forgot to eat lunch. He made 20 bullets in one breath and consumed all the materials before he finally stopped.

Looking at a pile of bullets, Rosen let out a long sigh in his heart: 'With ammunition in hand, I am not panicking. '

He turned his head to look at Savvy, and saw that the parchment in front of the fat man was full of sketches. After a closer look, Rosen couldn't help laughing. This kid had been busy for so long, but he didn't figure out a single one.

The result was as Rosen expected, so he was not in a hurry. He first collected the bullets one by one, carefully wrapped them with moisture-proof parchment paper, and then walked over and said with a smile: "Savi, how is it?"

Savi was startled by the sudden movement, and the bald brush in his hand fell. After looking up and finding that it was Rosen, he sighed and said ashamedly: "Master, although I understand the principle, when I really start to practice, I find that there are still many specific details that I haven't figured out. This is much more difficult than I originally thought."

Rosen nodded: "You are right to think so. Don't worry, keep thinking, wait until tomorrow, if you still can't figure it out, I will give you an answer. Remember, you must not be lazy. You will rely on this craft to make a living in the future. If you are lazy now, you will fool yourself."

"Yes, I know." Savi responded with a bitter face.

Rosen took the bullet bag and leisurely left the glass shop, first went to a small restaurant to fill his stomach, and then walked back to the courtyard.

As a result, before he reached the gate, he heard Anne's voice behind him: "Rosen, wait."

Rosen's heart skipped a beat, and he immediately turned around and saw Anne walking towards him quickly.

When Anne came closer, Rosen immediately asked: "Is Dias here?"

Annie nodded slightly: "I saw a man entering the Baron's Mansion. He looked to be in his 30s, wearing a thick cowhide robe and holding a long wooden staff. His outfit was exactly the same as the magician of Nilogarde Academy."