Read at https://w w w . m t l r e a d e r.com
Jin and Elsa are relaxing in the state guest suite in the royal castle after the eve of the festival.
"......Today was a pretty good time, wasn't it?"
"Hmm."
Read at https://w w w . m t l r e a d e r.com
Then there's a knock at the door.
"Yes."
Reiko opens the door, and standing there are Prince Ernesto the Third, his lady-in-waiting Laila, and Lotte the Golem.
Read at https://w w w . m t l r e a d e r.com
"Your Highness..."
Jin and Erza also got up from their seats to greet Ernest.
"Jin, I wanted to talk to you for a minute. Can I talk to you now?
Read at https://w w w . m t l r e a d e r.com
"Yeah, sure.
"Okay, I'll leave you alone.
The third prince Ernest is a very frank man. However, he had grown to about the same height as Jin, and his face had matured a bit.
Read at https://w w w . m t l r e a d e r.com
"Congratulations again on your marriage, Jin and Elsa.
"Father, Erza, congratulations on your marriage."
Read at https://w w w . m t l r e a d e r.com
"Congratulations on your marriage, Mr. Jin and Mrs. Erza!
Ernest and his friends congratulated the couple. A few people were chewing, but Jin and the others pretended not to hear it.
"Thank you.
Read at https://w w w . m t l r e a d e r.com
"Thank you very much.
Jin then looks at Lotte.
"......Yes, Lotte seems to be in good condition.
Read at https://w w w . m t l r e a d e r.com
"Yes, thanks to you."
Since the car has been seriously maintained by Jin, it is maintenance free in normal operation.
Read at https://w w w . m t l r e a d e r.com
Jin offers a chair to Ernesto, since he can't stand to talk.
Ernesto sits down, and Lila and Lotte stand diagonally behind him.
Ernest sat down in front of Jin and opened his mouth with a slightly embarrassed look on his face.
Read at https://w w w . m t l r e a d e r.com
"I know I asked you a few questions the other day, but I wanted to ask you a few questions about magical engineering.
"Here you go."
"Last time at the ...... World Congress, I asked you about the
Read at https://w w w . m t l r e a d e r.com
"Yes."
Whether he is self-taught, or whether he is asking the castle's magecraftsman, Prince Ernest is quite knowledgeable for his age.
"I think they are usually made of metal, but they are heavy, aren't they? The thinner it is, the weaker it is. ...... I think Lotte's skeleton is now made of light silver, but it used to be iron. Maybe it was hollow then?"
Read at https://w w w . m t l r e a d e r.com
He had noticed that Lotte's skeleton was different from other common golems, as he had been watching her while fixing the broken parts after the commotion at the golem garden party.
"Yes, that's right: ......."
At Ernest's previous request, the soft-spoken Jin.
Read at https://w w w . m t l r e a d e r.com
"I'm going to take a break from magical engineering for a moment..."
He prefaces his speech with,
"I would like to think about the strength of a stick.
Read at https://w w w . m t l r e a d e r.com
Jin began.
"Yes. ......"
Ernesto looked doubtful, as if he could not quite grasp the meaning of the question.
Read at https://w w w . m t l r e a d e r.com
"First of all,...... I like this one."
Jin pulled out a piece of notepaper from his baggage.
He cut it into pieces about 12 cm long and 7 cm wide.
Read at https://w w w . m t l r e a d e r.com
"Now, make a bridge out of this paper. Let's put a coin on top and experiment to see how much weight it can bear.
Jin first folds the paper vertically four times and shows it to the audience.
"Like this," he says.
Read at https://w w w . m t l r e a d e r.com
He places the paper bridge on top of a <
"Now, how many coins will fit on it?
The paper bridge was bent when two coins were put on it.
Read at https://w w w . m t l r e a d e r.com
So two coins were impossible. But here's what I did.
Another piece of paper, this time bent into a U-shape, is placed on top of the <
This time, 25 sheets can be placed on it.
Read at https://w w w . m t l r e a d e r.com
"Wow, it's going to be strong!
"Well, why don't you turn it upside down?"
In other words, the open side of the U-shape is on the top.
Read at https://w w w . m t l r e a d e r.com
"Isn't that the same as ......?"
Ernesto says, but Jin puts the coin down. >>and puts the coins down.
"Ah."
Read at https://w w w . m t l r e a d e r.com
At the ninth coin, the paper bridge is bent.
"...... why?"
Read at https://w w w . m t l r e a d e r.com
Jin chuckled and began to explain.
"Yes, that
"What do you mean?"
Read at https://w w w . m t l r e a d e r.com
"I mean, <
"Oh, I see."
"But the logic of this bridge is so complicated that I can't even explain it to you."
Read at https://w w w . m t l r e a d e r.com
Unfortunately, Jin, a high school graduate, could not explain it that well, since structural mechanics uses cross-sectional quadratic moments and integrals.
"I know I'm getting a little sidetracked here, but by repeating these experiments, we can find a strong and lightweight structure."
Read at https://w w w . m t l r e a d e r.com
"Yes."
"So, here's my conclusion. In Lotte's case, most of the skeleton is hollow.
You mean pipes?
Read at https://w w w . m t l r e a d e r.com
"Yes. In this case, the strength against <
"Hmm. ......"
Jin also has a vague recollection of this part.
Read at https://w w w . m t l r e a d e r.com
"So, back to the magical engineering, I guess there are not many magicians (magecraftsmen) who can work on this
"Is that so?"
"Yes. As far as I've seen, there are few such golems or automata.
Read at https://w w w . m t l r e a d e r.com
Elena, who once led the
"The only one I can think of is <
Most of the rest were solid rather than hollow, Jin recalls.
Read at https://w w w . m t l r e a d e r.com
"Well, the strength of a bar or skeleton is not only in bending, but also in torsion, tension, compression, shear, and a combination of these."
Jin concluded, "I think it is safe to assume that strength other than bending is roughly proportional to cross-sectional area.
That conclusion is a bit different, but no one could mention it.
Read at https://w w w . m t l r e a d e r.com
Ernesto asks a question at this point.
"Jin, what's this
"Oh, that's not so easy to understand, is it? Shearing is ...... like cutting something with scissors. It's like being slashed with a sword.
Read at https://w w w . m t l r e a d e r.com
"Oh, I see. I see.
"The basic structural design principle is to make it as light as possible without compromising its strength.
This applies not only to golems and automata, but also to bridges, buildings, carriages, and ships, Jin added.
Read at https://w w w . m t l r e a d e r.com
"I see. ...... That was interesting, Jin! Thank you."
Ernesto, who said he could not stay long, thanked Jin and got up to leave the room.
Read at https://w w w . m t l r e a d e r.com
"Jin, that was interesting."
After the three had left, Erza spoke up.
"Experiments like that would be interesting to do at a technology expo.
Read at https://w w w . m t l r e a d e r.com
"Yeah, sure."
Since the World Congress was held this year, the technology expo is supposed to be held in the fall or later.
"I wonder if I should attend ......."
Read at https://w w w . m t l r e a d e r.com
Jin has completely forgotten about tomorrow.