Chapter 64 The principal wants to teach people to make money again
If you ask a magician why you learn magic, more than 90% of the people will answer that it is to make money, and the remaining answer is to make a lot of money to explore On the path of magic, those who practice magic with love are wealthy people whose families are not short of money.
In the past, magicians had limited means of making money. They could either rely on force to become a member of the landlord class, make unknown and powerful things and sell them to wealthy people, or make money from their peers.
Now in Wesenling, everyone has a new choice: you can make money from ordinary people.
Now people at Weissenburg University have a consensus that despite his young age, the principal is a genius at using magic to make money.
Vice Principal Manuai has been studying necromancy for so many years, but he didn't make much money before.
Under the guidance of the principal, he changed his career to specialize in the field of long-term food preservation. He has achieved some results so far. He only needs to solve why some of the dehydrated and sealed concentrated soups will change in flavor over time and some will not. After this topic, it will rain gold coins.
There is also that guy from BASF who was worried about raising money to get married not long ago. With the help of the principal’s advice, how many wives he can earn now depends on how much money he has.
Now that the principal said he had a new idea, a group of people immediately became excited.
Frederick found that the eyes of this group of people were green, like hungry wolves looking at lambs.
"Ahem..." He coughed twice, "Let me ask, who can expel the air from an object to form a vacuum?"
At this time, a big sister suddenly shouted: "My fiancé is the best at this! Principal, just wait, I'll find him right away!"
In the time it took Frederick to blink, the eldest sister had already run to the blacksmith's stable to pull the horse. Went out to find someone.
The others sighed together, as if they saw a golden mountain leaving them.
"Okay, let's talk about other things first." Frederick shrugged, "I'll talk about another kind of thermometer."
"Everyone knows about thermal expansion and contraction, and we also know that different metals deform differently under the same temperature change."
"We can stick these two metal sheets tightly together , when they deform due to temperature changes, one side deforms more and the other side deforms less, then it will bend."
"We can use this bending deformation to detect temperature, without worrying about water. It fails when boiling. It can measure very hot things, as long as it doesn’t burn red.”
He was talking about the principle of a bimetal thermometer. Rub out a small amount, which is enough for now.
Everyone, you look at me, I look at you, and then you all nod.
Frederick was already ready and gestured to Carbo. The head maid immediately took out a piece of parchment with a number written on the corner from the shoulder bag.
He handed the parchment to All Might, and several people immediately crowded over to look at it.
Omet simply went over and put the parchment on a table, and everyone gathered around the table to study it.
These scholars who study golem puppets all have metallurgical and processing skills, and they can see the principle of this mushroom-like bimetal thermometer at a glance.
The core of the thermometer is a long spiral coil-shaped thermal conductivity sensor made of two metal sheets. When the temperature changes, the top will rotate, thereby driving the pointer.
Everyone watched for a while, and a student said: "Principal, if this metal spiral is made flat, it can be made as big as a palm. It can be placed in the room to measure the temperature. If it is made small, it can be put in your pocket. What do you think? Really?”
No one answered after a while, and then they realized that Frederick was squeezed outside by them.
Everyone squeezed awkwardly to make room.
After Frederick passed by, he said, “If you think it’s possible, just give it a try.”
The student immediately said excitedly: “Okay, I’ve done this!”
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There is still a big market for thermometers. Not to mention getting rich, but at least they are well-off.
Then someone poured cold water on him: "Which temperature scale are you going to use?"
The student pinched his brows in distress, obviously this was not the first time he had encountered this problem.
Frederick said: "It's okay, we use our own temperature scale."
At this time, there was a sound of horse hooves, and then a shout.
"Come on, come on! Principal, people are here!!"
The big sister just now ran in eagerly dragging a handsome boy with her.
The handsome boy also looked excited. As soon as he entered the blacksmith shop, he immediately said hello to the principal and introduced himself. "Duval?" Frederick raised his eyebrows, "I remember that there used to be a big man on the Isle of England who also had this surname."
Duval politely replied: "I I’m just a branch of the family, with only a knighthood and a manor. I don’t want to spend my whole life farming. I went out to study when I was twelve years old and never went back.”
Frederick said "Oh" and said: "It's quite profitable to sell wool over there."
Duval replied sincerely: "Who dares to say that he can make money in front of the principal."
< br>Frederick just smiled and asked: "Where were you just now, and how did you come so fast?"
Duval replied: "I was at BASF, studying the pressure cooker invented by the principal, and I discovered It turns out that the boiling point of water is related to the air pressure. Today we are trying to see if water can boil at a lower temperature under low air pressure."
Frederick said: "Of course, if you don't believe me, go to the top of the mountain. , the water will boil and the meat will not cook properly.”
"By the way, you can control the air pressure?"
Duval did not think about the boiling point. Making money was more important, so he immediately replied: "Yes, I am good at wind magic. I can create a vacuum to kill enemies, and I can also High pressure brings some trouble to people."
The corner of Frederick's mouth twitched and said: "Who can withstand your ability on the battlefield?"
Duval shook his head and said. : "I don't like killing, and there are many ways to break this method. If the wind is strong, it will be useless."
Frederick nodded and said: "Then use this magic to make money."< br>
Duval immediately stood up and replied loudly: "Thank you, principal, for your cultivation!"
Frederick touched his hair, asked Carbo to bring another piece of parchment, put it on the table and said: "Let's start from the beginning. Let’s start talking about thermometers. ”
“To make a thermometer, you must first confirm the temperature scale. Zero is set at the freezing point of water. This is very commonly used. 100 degrees is set at the boiling point of water at a pressure of 760 mm of mercury. ”< br>
After he finished speaking, someone asked: "Why are you so sure?"
Duval answered first: "The boiling point of water is related to the air pressure. This is for sure. The boiling point of water under a certain air pressure. is constant and is very reasonable to determine 100 degrees.”
"The air pressure of 760 millimeters of mercury is neither too big nor too small. It is about the same as the air pressure at the seaside. It fluctuates up and down, just rounding up."
His explanation sounds reasonable, and there is no objection.
The student who just wanted to make a bimetal thermometer said: "Okay, let's make a thermometer according to this temperature scale, and call it Weisendu."
Everyone nodded in agreement.
Frederick didn’t care, he was as good as this one.
He put another piece of parchment on the table, and then said: "I just talked about the bimetal thermometer, now let's talk about the liquid thermometer."
"The principle of the liquid thermometer is the same as those of existing thermometers, but It has a vacuum inside, which can eliminate errors caused by air pressure. "
Duval said: "I can use a magic circle to create a vacuum area, and the sealing operation inside can be designed by Professor Ogilvy. A special golem puppet arm."
Omet said: "This is simple, Wagner can do it, you can discuss it with her."
Duval's fiancée smiled proudly. Several times.
Frederick continued: "Our own glass workshop will not start construction until next year. There is no rush."
"But you can make money now by making a new thing."
Another picture Parchment appears on the table.
"Temperature is spread by objects, and vacuum can effectively isolate the temperature spread." He pointed to the cross-section diagram of the thermos cup on the parchment paper and said, "You can first make this kind of cup and kettle, with two layers of metal shells There is a vacuum in between, just leave a small tail and heat and seal it in a vacuum environment."
"You can figure out the lid yourself, it's almost done."
Duval's eyes lit up. This thing is great. It's a cold day now. If there is a cup like this to hold hot water, it will definitely be able to keep it warm for a long time.
Frederick finally said: "My ultimate goal is a thermometer and a vacuum-insulated container. You all need to practice your skills first and make some money to improve your life. When the technology is enough, I have an experiment that needs your products. To make equipment.”
“If this experiment achieves my expected goals, your names can also appear in the textbook.”
(End of this chapter)