Jin, who has been developing a spacecraft, decided to develop a transponder first. This is because he already had an idea in mind.
The basic idea was a relay using <.
It receives incoming communications and re-transmits them without converting them into voice.
Since the range of each manacam simply increases, we have been thinking of using directional communications to increase the efficiency of the system.
Since this retransmission only needs to be in a certain direction, i.e., the direction where Horai Island is located, it should be possible to send converged signals and the range should be longer.
This is Jin's plan.
How to find the direction of Horai Island and how to control the attitude are the next issues to be solved.
"On the other hand, the return signal should be directed in the direction from which the transmitted signal came."
Creating these new magical tools is fun, especially since they are not weapons of destruction. Especially since they are not destructive weapons.
The direction of Horai Island, or rather the direction of Ars, can be calculated visually if it is close, or from the positions of the stars if it is far away.
Attitude control is already proven with the .
After completing two prototypes in about three hours, Jin completed a communication test.
"After all, the carrier wave is traveling in a straight line. ......"
He made a test contact with an Air Force golem, Sky34, located behind the planet Ars, but the free-magic ether wave seemed to penetrate through the planet.
"I wonder if the free-magic element (ether) contained in the ground or in the planet is the medium after all.
I'm going to make a hypothesis, Jin.
In any case, it seems to be practical. He leaves the matter of what will be installed in the spaceship to the old man and the craftsmen (Smith), and starts to work on the next development.
"Father, it was done quickly, wasn't it?
Reiko talks to Jin.
"Yes, it's better for your mental health to start with the easy ones.
In the tests, there were times when the time to solve the hardest problems became too much and there was no time to solve other problems, but Jin had a policy of solving the easy problems first.
However, this too was a waste of time, as he would start solving a problem and then give up because it was unexpectedly difficult, and then try another problem and find that it was also difficult .......
Jin recalled for the first time in a long time the tips on how to solve the exam that his classmate had told him when they were in the regular high school.
"Yes, it feels good to be able to see the result of your work.
Reiko says such a line, knowing what Jin is thinking.
"Yes, you're right, Reiko."
Reiko says, "Yes, you're right, Reiko. Then he tells her what he is going to develop next.
"Now missiles."
A weapon of pure destruction.
But as No. 700672 pointed out, if there is such an obstacle in the direction of travel in space, he must use it without hesitation, or he may be destroyed. If you do not hesitate to use it, you may be doomed.
"When it comes to explosions, you can't go wrong with ......."
"<>, isn't it?"
Reiko answered Jin's words as if she were covering her own words.
"Yes, and it is called <>.
<
"We can use it as a warhead."
Hence, this weapon is relatively easy to make.
It is more like a rocket or a grenade than a missile.
The problem is that the shells are loaded in a spaceship with air, and then fired into the vacuum of space.
Somewhere it has to cross the boundary, and the human wants to make sure that air does not leak out at that point.
"Father, why don't you just leave it in the vacuum from the beginning?"
Jin realized that he could leave such work to the golem and easily created a prototype shell.
"Now I'd like to know the exact power. ......"
Since it was intended for destroying meteorites and cosmic dust, it would be bad if it was not powerful enough, and it would be useless if it was too much.
One gram of magistone is used as a standard for the explosive charge. According to Jin's estimation, it should be able to destroy a rock of about 10 meters.
"Father, why don't you use the force field generator to levitate the rock and shoot at it?"
"That's the only way. ......"
Since we didn't want to be useless in case of emergency, we decided to experiment with Reiko's advice.
Avoiding Tatsumi Bay with its fish ponds, we went to the north side of Horai Island.
The Mermaid team is given a force generator to make a rock block float 50 meters above the sea.
Reiko will shoot at it.
"Reiko, we only have one prototype, so don't miss. The power of the shot should be minimal.
Yes, Father. I'll leave it to you.
Reiko loaded a shell into her favorite magic cannon and readied it.
"Are you ready to record this, old man?"
<
Jin was planning to record what was going to happen and make use of it in the future.
"Ready, three, two, one, fire!"
The shell, which was fired at a power of about 3 percent, far from full power, flew at subsonic speed and hit the rock mass without aiming too hard.
Immediately after the shell hit the rock, the flow of magical control (Magi Sequence) of <> is activated.
And then the explosion.
"Oh, it worked!
The 10 meter chunk of granite shatters into more than 100 pieces.
"The power is just as we calculated."
Jin thought that it would be a good idea to make several levels of the device according to its power.
Then the old man made a suggestion.
>
"Ah, I see. Then we don't have to think about airlocks or anything like that."
The problem is the control brain for accurate transfer.
The current transporter can only be controlled by you. A small error at the time of sending out the transporter would be a big error at the destination.
"But the positional measurements should be as accurate as possible."
Jin thought that a spherical spacecraft with a diameter of 300 meters and a measurement device at both poles of the sphere would be quite accurate.
"Oh, I see. We can link this to the radar, right?"
At the same time, Jin started to consider the < that he had been advised by No. 700672.
"Hmmm, what kind of radar do you mean ......?"
As I recall, it emits a radio wave and catches the bouncing radio wave ......," Jin mumbles as he thinks about it.
"Father, please stop for the day and have dinner."
Before I knew it, the sky was dusk.
Jin obeys Reiko's words this time, knowing that there is no use in pushing himself too hard.
"Brother Jin, welcome home.
"Hi, Elsa."
When Jin returned home, Erza had also returned from the village of Kaina.
"Go wash your hands," she said.
"Yes, okay."
As he went to the bathroom to wash his hands, Jin thought that it would be nice like this.