Chapter 1157: 1157 - - 31-24 Power Development

On the 18th, Jin and Erza were busy.

For what, they had to deal with the visiting aristocrats and influential people.

<, even if it's as thin as a spider's thread, and they have been busy since this morning.

So Jin and Erza pretend to go to the restroom and use the emergency to , and then to Horai Island. <.

"I'm relieved."

"...... agree."

The two of us slumped into our chairs on Horaijima.

It had only been an hour, but they were mentally exhausted beyond belief.

I don't think I'll be able to recover after another two hours or so like this.

"I'm sorry old man, but I'll leave it to you.

"......"

I think it would be more useful for me to leave it to the old man to record the faces and personalities of the nobles.

"Father, would you like something to drink?"

Reiko called out to them, seeing that they were both exhausted.

"Oh, yes. Green tea would be good. ......

"Sure."

There are some chanokis planted on Horaijima, but the tea leaves will not be ready for harvest until next year or so.

Hence the tea we buy from the Shoro Kingdom.

"Ah, it smells good.

Since it is a sencha, the temperature should be about 80 degrees Celsius.

Jin, who had a cat's tongue, drank the tea while letting it cool down a little.

"By the way, Jin," said Erza as she drank the tea.

Erza spoke while drinking the tea.

"What happens when there is no more free magic element (ether) at all?

She must have been thinking of the south.

"We won't be able to use magic tools. < was used."

"Indeed.

"As for humans, the mana in our bodies won't be reduced to zero, so we should be able to breathe a little easier.

It is like when a demon tribe comes to an area where there is little free magic element (ether).

In addition, the ancient artifact of the Shoro Kingdom, the giant golem, was sealed underground where the concentration of free magic element (ether) was lowered to near zero.

Considering the fact that even if a human entered there, he/she would not be able to use magic, it was thought that the effect on the human body would be slight.

"If ...... is the case, don't we need to develop a non-magical power source?"

As an emergency, that is.

"Indeed. That would be ......."

Jin thought of several possible sources of power, but would be the best, he thought.

"Batteries or ......"

I know the principle of motors, so I should be able to make one, but what about batteries?

"I don't know the ...... principle."

At best, Jin could only make a rudimentary battery by soaking different metals in an electrolyte.

"...... hmmm ......"

At first, Jin thought he would try to make a motor.

The most difficult part was the winding. The copper wire must be coated with a heat-resistant and insulating coating.

"......I guess lacquer."

Jin decides to use copper wire coated with lacquer, hardened and baked at high temperature.

"The armature is silicon steel, right?"

That was the end of the story.

"...... is it difficult to make a strong magnet ......?"

Although he knew the names ferrite, neodymium, and samarium cobalt, even he did not know the manufacturing process.

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"It was an unexpected pitfall."

Jin is a little depressed when he realizes what he has left out.

"......Ji, Jin brother, I'm sorry?"

Erza is a bit flustered because Jin is depressed because of her strange incitement.

"...... but without magic, scientific civilization really has to start over from scratch, doesn't it?"

It is really a little late, but once again, Jin thinks about the benefits of magic in this world.

"For now, let's make the field magnet also electromagnetic ......."

Jin tries to make a motor at least.

* * * * * * * * * * * * * *

And two hours passed. In the Kingdom of Egelea, had finished dealing with the situation and was relaxing.

And Jin...

"Okay, it's done."

After three prototypes, they completed the first practical motor.

It is cylindrical in shape, 30 cm in diameter and 30 cm in length. The shaft diameter is 10 mm.

"...... but there is no power supply."

Jin laughed bitterly.

"Can't you do lightning magic?"

Elsa asked Jin.

"Well,...... the voltage is too high and it can't run for a long time,........."

Jin tries to see how much the voltage can be lowered by playing with the Magi Formula.

The problem is that if you lower the voltage too much, it will not discharge.

"Hmmm... ......"

Jin has been groaning since a while ago. But his face looks happy.

"Yes!　<

This weapon uses the principle of electromagnetic induction to generate inductive power in metal and heat it.

"If we lower the frequency, it won't radiate, but it will generate voltage, so it could be used as a generator."

"But brother Jin, doesn't that mean we are relying on magic?"

"Oh, I see. ......"

It's quite a puzzle.

In reality, it is difficult to store electricity.

Dry cells and storage batteries do not store electricity, but generate it through chemical reactions.

Capacitors, also known as capacitors, store electricity, but it is not very practical power.

"Hmmm......... let's try a different idea."

After much deliberation, Jin decided to step away from the motor for a while.

Using magic is OK until you make it, but for the operation, he decided to think again about purely scientific power.

"Maybe pressurized air to turn a turbine?"

Adamantite cylinders can be compressed to several tens of thousands of atmospheres, so it might be practical.

"Oh, there's also a flywheel."

This is a method of storing kinetic energy by rotating a heavy disk at high speed. This could also be made by using adamantite.

"You could also simply use a boiler to make steam and turn a turbine, but ...... that's a new idea."

Without magic, Jin was once again reminded of how difficult it is to reproduce the science of the earth.

But while he was doing this, time passed, and a banquet had begun in the Kingdom of Egelea.

Jin and Erza noticed it,

"......Ah, ......enough, enough of this."

They decided to let the doppelgänger take care of the rest for the day,

"But you know,......, it would be ungrateful."

"Well, yes, maybe."

He changed his mind and went to the <> party.

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