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"Can it be put on the airship?" Lydia asked excitedly.
"Of course, it can increase the speed of the airship from 15 kilometers per hour to more than 70 kilometers per hour!" Lin En said the most conservative value. "It can also be used to drive ships or anything else you want to move!"
"Seventy kilometers? Wouldn't it take half a day to get from Yieta to Greenrail?" Philip said in astonishment.
This is too fast.
Is it really that fast?
Lynn smiled, then took the blueprint and explained to the alchemists and halfling craftsmen like Darren the operating principles and differences of steam and internal combustion engines.
A steam engine is essentially a process of boiling water, which converts the water in the boiler into steam and then sends it to the cylinder, pushing the piston to do reciprocating motion.
Simply put, it converts the chemical energy of the fuel into the thermal energy of steam, and then converts the thermal energy of the steam into mechanical energy, thereby generating a continuous source of power.
As its upgraded version, the internal combustion engine reduces the steps, converts thermal energy into mechanical energy, and generates high-temperature and high-pressure airflow through the rapid combustion of fuel to drive the piston movement, so the efficiency is naturally much higher.
As for its fuel problem.
The most primitive internal combustion engine uses gas as fuel to provide energy.
There are still some wizard lands with coal resources.
In fact, Lin En would rather use hydrogen directly as fuel, which would not only increase the thermal efficiency to more than 50%, but would also be very environmentally friendly and pollution-free.
This idea was proposed as early as the 18th and 19th centuries, but the cost of extracting, storing and transporting hydrogen fuel is very high, so it is more cost-effective to use fossil fuels.
However, for wizards, the production of hydrogen is not that difficult, which makes hydrogen-powered internal combustion engines possible.
In this way, let alone allowing the airship to reach a speed of 70 kilometers per hour, even 200 kilometers is possible!
However, the almost zero industrial level of the Yieta Port gave Lin En a headache. He could only hope that these alchemists could think of ways to use magic to solve various technical problems and create an alchemical internal combustion engine that combined technology and magic!
Even though Lin En explained the principles of the internal combustion engine in great detail, the large number of terms interspersed in it still made the alchemists ponder for a long time. After a period of debate and discussion, they began to work on the modification process.
For example, how to improve the cylinder's ability to withstand high temperature and high pressure, or how to record the alchemy array into the internal combustion engine to continuously produce combustible gas without being destroyed by the high temperature environment inside...
Lydia and others did not participate in the research on magic modification, but were very interested in something called gears in the internal combustion engine.
Several gears of different sizes fit together and transmit power through rotation. It is very magical. Although she has seen similar things on steam engines before, they are far from being so sophisticated...
Chapter 203: The high ground of public opinion must never be in the hands of others!
For a whole afternoon and evening, Lin En explained to the alchemists the operating principles of various mechanical structures, and was even more confused by Lydia's questions, which seemed to be "a hundred thousand whys".
However, with the joint efforts of everyone, by dawn the next day, the drawings of the first generation of magic internal combustion engine had been completed.
Although it looks quite good, Lin En has no idea whether it can succeed. He can only let them make it first and then slowly modify the problems.
In the next few days, Lynn didn't care about it anymore. He handed the task of making the internal combustion engine to Philip and Darren, asking them to study it slowly and tell him when the prototype was ready.
He put all his energy into compiling new textbooks and founding a new newspaper!
Lin En knows the importance of public opinion very well. It can directly determine what people see, hear, and even think every day!
The previous controller of Yieta Harbor, Helram, did not care about this, and the parliament did not pay enough attention to it, but Lin En would not let the high ground of public opinion be in the hands of others.
So after a few days, a newspaper called "Magic Daily" was quickly listed in the most conspicuous place in every store.
The thin, white paper immediately attracted everyone's attention, and then the content on it caught their eyes.
The front-page headline of the newspaper was a description of the tragedy in the South City District and the subsequent handling plan. For the sake of the stability of the Iyeta Harbor, Helram was not mentioned in it, and most of the blame was put on the evil wizard Merck.
However, this matter is indeed related to Merck and is not entirely slander.
For ordinary people, what shocked them the most was obviously not this, but the fact that the new lord of the port city, the Magic Star of Yieta, was actually going to provide pensions to the poor people affected by the disaster. This was simply thunderous news.
When did those high and mighty wizards actually care about the poor? Some poor people in the southern district were so moved that they burst into tears after receiving the resettlement fees.
Mary was one of them. The soul-devouring formation that suddenly appeared in the South City took away her husband's life without any warning, leaving only her and two young children.
The black bread she had received before was almost gone. Mary even considered going to the magic workshop to serve as a test subject for the wizards' potions. It was said that if she was lucky enough, not only would there be no side effects, but she would also be able to gain power far beyond that of ordinary people.
Mary knew very well that the probability was very small. There were many people in the South City who had become deformed due to taking wizard potions. Unless they were desperate, not many people would be willing to joke with their own safety.
Fortunately, while she was still hesitating, she received the news that the pension would be paid. Those like her whose families had lost important labor force could receive a full fifty silver coins!
If they save some money, it will be enough for the family to support themselves for a year or two. Mary was very grateful. Then she gritted her teeth, spent five copper coins, bought a copy of the [Magic Daily], and asked the owner of the store to tell her the contents of the newspaper.
Mary's decision was undoubtedly correct, because the newspaper also announced two important news.
The first is to build several new papermaking workshops, glass workshops and airship manufacturing workshops in the Yieta harbor, and recruit a large number of workers, estimated to be around 1,500 people. Not only will they be provided with food and accommodation, but they will also be paid eight to fifteen silver coins per month depending on the type of work.
Priority will be given to those who can do math and have worked as craftsmen.
In addition, the families of those who died in the South District City tragedy will also be given priority.
Seeing this, Mary's eyes suddenly lit up. There was no indication of gender, only minimum and maximum age limits. She was undoubtedly qualified.
Eight silver coins are not worth mentioning in the eyes of wizards, but it is not a small amount for ordinary civilians. It is enough to feed a family of three, or even live a luxurious life of eating white bread every day and occasionally having an egg.
The second thing is that Yieta College is going to expand its enrollment, and wizard apprentices and even formal wizards who are willing to continue studying can return to school.
In addition, the Magic Daily also mentioned that Yieta would build a school to enroll ordinary people in the future.
"Establishing a school for ordinary people who don't know magic?" Seeing this, Mary couldn't believe her eyes.
"Yes, that's what Lord Orlando said. He teaches Mathematical Olympiad, Chemistry and Physics." The shop owner said with certainty. He also confirmed it with the wizard several times.
"But...what can we do after learning all this?" Mary said with a confused look on her face.
"I heard from Lord Orlando that the city lord is very short of manpower right now. This group of students can join a real alchemy workshop in the future and become assistants to wizards... just like Lydia!" the shop owner explained patiently.
Lydia? Mary immediately became excited when she heard this.
In the port of Yieta, everyone knows that this half-orc girl who usually runs around and likes to do some strange things has now transformed herself into the right-hand man trusted by the city lord.
Even those halflings, whom they usually looked down upon, now live an extremely superior life. It is rumored that they can earn several gold coins every month!
The power of role models is undoubtedly strong!
Mary was silently wondering whether she should send her two children to college when the time comes.
The tuition fee for each person was ten silver coins, and two people would spend nearly half of the pension.
But when she thought that they would be able to become assistants to the wizards in the future and would not have to make a living in the South City like herself, Mary gritted her teeth and made up her mind.
As long as I can get a job in the workshop, the monthly income will be enough to support the daily expenses of my two children.
Mary thought of her lost husband again and prayed in her heart that life would get better slowly...
Also reading the newspaper were the wizards in the port city and many apprentices who had already graduated. They had completely different attitudes towards Lynn's re-education plan. Some of them refused out of pride or even sneered at it, but many other wizards were interested.
They all knew that the current dean of the college, Lin En, was a genius who specialized in the study of magic theory. Although he was young, he had created many novel and powerful magics.
Moreover, there had been rumors circulating in the harbor city that the other party had been promoted to a great wizard, so the number of people who signed up to return to school was far more than Lin En had imagined...
Chapter 204 Lydia: We have made the magic internal combustion engine!
After being closed for a month and a half, the academy, which was closed due to the South City tragedy and the holding of a magic seminar, reopened.
"I miss it so much. It's been many years since I last came here." Albert said with emotion as he gazed at everything in the college that was familiar yet unfamiliar.
He never thought that one day he would step into this place again as a student and attend classes in the same academy with his son.
Although this feeling was a bit uncomfortable, Albert still came. It was not for the purpose of learning much knowledge, but he hoped to take this opportunity to establish some relationship with the talented Mr. Lin En.
There were many people who shared the same idea as Albert, so there were as many as two hundred official wizards returning to school this time, and there were countless wizard apprentices. Due to the large number of people and the only teacher, Lin En had to teach them in batches.
"Good afternoon, welcome back to school everyone. I am Lin En, the new president of Yieta College!" Lin En stood in front of the podium, looking at the wizards sitting in the classroom, and greeted them with a smile.
"It's an honor to meet you, Mr. Lin En." Albert stood up first and returned the greeting.
All the wizards present also stood up and saluted. This was not only because of the relationship between professor and student, but also because the other party was the leader of the Yieta School.
"Please sit down, everyone. You are all official wizards. I believe you all have unique insights into magic. I opened this course just to explain the elemental laws that I understand and summarize for everyone to discuss. I call it chemistry..."
Lin En did not act in a haughty manner just because of his status. He asked the goblins to distribute the textbooks while speaking.
Albert looked at the exquisite book cover in front of him curiously. The whole book was made of that special white paper. He reached out and opened the first page. On it was written the preface in vigorous handwriting: [Chemistry is a natural science that studies the composition, structure, properties, transformation and application of matter at the atomic and molecular levels.]
"Dean Lin, what do these atoms and molecules mean?" a wizard asked with a bit of confusion.
"Atoms are the smallest particles that make up simple substances and compound molecules, which are what we often call elements." Lin En explained. "And molecules are made up of atoms, and are the smallest particles in chemical reactions..."
Lin En raised his hand, and a small ball of water quickly appeared in front of everyone. "For example, water is made up of many water molecules. The elements that make it up are hydrogen and oxygen... The chemical formula is H2O, also known as dihydrogen monoxide..."
"Aren't those [Ir] and [Fula]?" There was a slight discussion from the audience. This is the name given to the elements hydrogen and oxygen in the wizarding land. It is said that they were named after two wizards who discovered them in ancient times.
"How much do you know about hydrogen and oxygen?" Lin En asked again.
"【Il】, no, oxygen is the source of life. If an ordinary person who doesn't know magic is placed in an oxygen-free environment, he will die soon." Albert said thoughtfully.
For example, the third-ring magic [Life Forbidden Zone] creates an oxygen-free environment, causing the enemy to die in a painful struggle.
"These two elements can be used to release fire magic..." another wizard also added.
"Apart from these?" Lynn continued to ask.
Albert frowned slightly. "Are you asking how many kinds of magic require these two elements?"
"No, I mean their chemical formula, boiling point, density, application, specific heat capacity, critical temperature..." Lin En blurted out a long string of nouns, making everyone dizzy.
"For example, hydrogen has a very low density. So when a large amount of hydrogen is filled into an object, the object can be suspended." While Lin En was speaking, he converted a large amount of hydrogen with magic power and bound it around himself. His body soon floated away from the ground.
All the wizards present were excited when they saw this. This meant that perhaps they could use hydrogen to develop flying magic?
"The airship you made uses hydrogen to suspend it?" Albert thought of this immediately.
"No, hydrogen is a flammable substance. If it is used to make an airship, it will turn into a fireball in the sky if you are not careful!" Lin En shook his head. "So I used another element. I will explain it in detail later."
Immediately afterwards, Lin En once again created a huge magic ball mixed with hydrogen and oxygen, and then fired it out of the window.
The magic ball broke open under a banyan tree, and a large amount of gas stored inside gushed out, followed by a fireball...
A loud explosion soon rang in everyone's ears, fire and flames shot up high, and the poor banyan tree had been blown into two pieces. The tree surface was bumpy, and the burning branches and leaves were scattered all over the ground. A huge hole was blown out of the soft ground.
The wizards in the classroom looked out the window one after another, all of them were astonished. This spell already had the destructive power of an ordinary third-ring magic, and the casting process was not complicated, even a first-ring wizard could do it easily.
"The optimal ratio of hydrogen oxygen chemical reaction is two to one. At that time, only a small spark is needed to cause a violent explosion, and the product is water..." Lin En introduced calmly.