LOL: I'm a bad prince in Demacia

Chapter 81 Ms. Mianwei, you have a good skill!

After a breakfast.

The four decided to set off, and the destination was naturally where Kashina's friends were.

That is the Menke family.

The carriage traveled all the way.

After a while, I entered a famous square in the capital.

It's called the Rue de Durand.

This street is an industrial concentration area in the capital, where many famous craftsmen, sculptors, artists, etc. are located here.

It covers a wide area and is extremely lively.

Going a little further, it is the gate of the Menke family.

Looking up, the gate in front of him is actually made of forbidden magic stone, connected by white stone pillars, and there are patterns carved on it, which looks incomparably magnificent.

Kashina walked in the front, pulled the rope at the door, and soon, a figure appeared.

Seeing that it was Kashina, he immediately bowed and saluted: "Miss Bouvier, why are you here?"

"I'm here to find Navis, is she there?"

"Miss Navise should be here." The gatekeeper just raised his head, and saw Lu Qi standing behind Kashina. He felt a little familiar. After taking a closer look, he quickly lowered his body and said respectfully again, "Hello, Your Royal Highness."

"Ah."

Lu Qi replied.

When the gatekeeper looked up again, he saw a girl with brilliant blond hair and a delicate and lovely face. He lowered his head again.

It's just that when he lowered himself this time, he glanced at him more by the way: "Miss Crownguard, Miss Laurent, hello both of you."

open the door.

"You should know where Miss Navis is, do you need me to lead the way?"

asked the gatekeeper.

"no need."

Kashina shook her head.

The four entered Menke's house, and Lu Qi looked around.

I found that the Menke family is not only grand, but also grand inside.

A five-story building stands tall and is the center of the manor. With it as the center, the building complex spreads throughout the manor.

These styles are more modern.

And within a few steps, there is a main courtyard, and a white statue stands in the middle of the main courtyard.

The statue should be carved according to Du Lang himself. It is a middle-aged man who looks gentle and has no sense of strength but has a kind face.

At this time, Kashina said: "There are five brothers and sisters in the direct line of the Menke family. The Navis we are looking for is the daughter of the youngest Mrs. Sheila."

On the way, Lu Qi got to know Navis briefly from Kashina.

She is the daughter of Sheila, the youngest of the five sisters in the Menke family.

Sheila married an ordinary craftsman. According to the rules of the nobility, Sheila should have married.

But that ordinary person, that is, Navis' father, passed away not long after giving birth to Navis.

Sheila's mother brought the two of them back.

"My friend is a little withdrawn. I don't even remember how long she hasn't been out."

Kashina said as she walked.

At this time, she had already led the three of them to Navis' residence.

Then reached out and knocked on the door.

A weak voice came from inside immediately: "Who is it?"

"I, Kashina."

"Here we come, wait a minute!"

Soon, there was a sound of chickens flying and dogs jumping in the room, and then the sound of bare feet stepping on the floor. Not long after, the door was opened.

The one who opened the door was a rustic girl in an ugly brown dress, with two whips tied casually, and two big round glasses covering almost half of her face.

She was barefoot, and those feet were really pretty.

Behind him, there are paper pages flying all over the sky, and the inside of the room looks chaotic.

This is Navis.

As if she didn't expect so many people standing outside the door, Navis was taken aback. She wanted to close the door immediately but was blocked by Kashina who had expected it.

Then he was forced to open a position.

Navis's strength was obviously inferior to hers, so she could only get out of the way in the end.

He hurriedly ran to put his shoes on.

After entering the room, Kashina introduced Lu Qi and the others.

"My lord, your highness, hello."

At this moment, Navis looked down at Lu Qi and saluted.

Lu Qi looked at her and didn't say anything for the time being. At this moment, he vaguely felt something.

Seeing that Lu Qi didn't say anything, Navis kept her head down, maintaining a salute posture, and didn't dare to move.

Seeing this, the three of Lacus were a little puzzled.

Then I saw that Lu Qi turned around Navis, and after turning around, he suddenly reached out and took off her big round glasses rashly.

A panicked expression appeared on Navis's face, and she was extremely nervous.

After taking a look, he took Navis back, and the nervous girl was relieved.

At this moment, Lu Qi made a palm with one hand and a fist with the other, and with a slap, he slapped, his expression relieved.

This strange behavior finally made Lux couldn't help asking: "Excuse me, what kind of nerves are you having?"

"Sure enough, a girl like this with one eye, wants a reversal."

Lu Qi answered this question to himself.

The moment he saw Navis, he faintly felt this way.

Taking off the big round glasses, a frail, pale face, but with very good features was revealed.

Isn't this the reversal!
Well, it doesn't really count, because there is a portrait of Navis' mother Sheila when she was young, and she is obviously a great beauty.

So Navis, as her daughter, couldn't see where she was going.

Hearing Lu Qi talking to himself, the three girls were obviously speechless.

"How can you call a girl dirty in person."

Lacus gave him a supercilious look, as if anticipating what Lu Qi would say next, and immediately added, "Not even behind the scenes!"

Lu Qi looked at her in surprise, he didn't expect that this could block you.

Ms. Crown Guard, she is very skilled!

"Look, you guys are obviously confused."

Regarding this, Lu Qi sighed, with a see-through expression on his face, "You think I'm pricking her heart, but when she dresses up carefully one day, you will be the ones who get slapped in the face."

Hearing this, Lax didn't even bother to pay attention to him, and pulled Navis away: "Don't worry, he's called intermittent nervousness."

Navis quickly waved her hand upon hearing that, "No, I don't care."

She really doesn't care, after all, it's not just one or two who say she's stupid.

But this His Royal Highness seems really strange.

Seeing that a few people really ignored him, Lu Qi shook his head, and casually wandered around the house.

He saw a lot of strange objects, and there were papers all over the floor, which were painted and melted.

After half a sound, he came to a conclusion.

Navis should be an engineering house girl.

At this time, Lu Qi noticed something and picked it up. It was two trumpet-shaped things with a line in the middle.

He picked it up and asked curiously, "Navis, what is this?"

Navis, who was caught in the middle and forced to chat, subconsciously stood up when she heard Lu Qi's question, and replied nervously, "Return to Your Highness, that is the microphone I invented."

"microphone?"

When Lacus heard this, she also stood up curiously.

When she came, Lu Qi handed over one of the speakers.

Lux took it, and then walked a few steps to the farthest point of the line, about seven or eight meters away.

Then she said into the horn, "Hey, can you hear me?"

Lu Qi didn't even need to raise the horn, looked at Lux at the other end and said, "Isn't this nonsense?"

So Lacus couldn't help asking blankly: "So what's the use of this microphone?"

With the distance between her and Lu Qi, she can communicate with normal speech.

Navis showed an embarrassing expression, and said embarrassedly: "So it's useless."

Lu Qi turned his head and looked at the gizmos in the room. It seemed that they were all made by Navis, and they seemed useless.

"So you have been at home for so long, and you have researched some waste products?"

He said.

Hearing this, Navis lowered her head and said weakly, "Yes."

Although it is very sad to be called a waste product this time, it has to be admitted that what Lu Qi said is true.

Lu Qi continued: "Actually, I think you just think too much."

Unexpectedly, Lu Qi would have a follow-up article, Navis raised her head, as if she was a little puzzled.

"You don't seem to have focused your attention on one thing."

Lu Qi picked up the paper on the ground and checked it. There are several types of things recorded on these papers, but the dates of these types are not far apart.

This shows that after Navis researched an object and found it was useless, she gave up decisively, and then put her mind on the next one.

Because of this, she didn't come up with a useful invention.

Hearing this, Navis bowed her head even more ashamedly.

Lu Qi looked around, and actually found some small inventions that would definitely be useful if he continued to study.

However, Navis did not persevere.

"Like this, microphone, do you know why sound can travel between two speakers?"

"Because there is a medium of communication between them."

Navis replied subconsciously.

Lu Qi continued: "Yes, the rope is the medium for sound transmission, but have you found that when it exceeds a certain distance, the sound cannot be transmitted?"

Navis nodded, the results of her several attempts were the same.

"Because, when the distance is long, the sound transmission is interfered a lot." Lu Qi played with the speaker in his hand, and then asked, "Do you know how sound is transmitted?"

Facing this question, Navis thought for a while before replying, "I think some kind of substance must be needed for the transmission of sound."

She was able to answer vaguely.

Lu Qi was a little surprised, and then added: "Yes, what is needed for sound to propagate in the air is a substance, and I will use it as a medium."

At this moment, Kashina, Lacus, and Fiona sat aside, looking at the two people who were talking, they suddenly felt that they couldn't get into it.

"medium?"

Navis was a little dazed for the first time.

Lu Qi said: "There are many kinds of media, including objects, gases, and even liquids. Have you ever tried it? Can sound travel in an environment without air?"

Navis shook her head.

"Let me tell you the answer directly. Sound cannot be transmitted in a vacuum environment. It can only be transmitted through a medium. This medium also exists in the air we breathe."

Lu Qi said, took a breath and asked again: "Do you now know why the sound cannot be transmitted beyond a certain distance?"

Navis thought for a while, and replied, "Because the influence of the medium is not enough? That is, the rope cannot carry the function of carrying sound for a longer distance."

Lacus, Kashina, Fiona: (⊙⊙)
Completely unable to comprehend, they raised their heads and began to travel far and wide.

"Then do you know that the voice has a high and a low, and what does the high and low pass through?"

"what?"

"vibration."

As they chatted, a gleam of light gradually appeared in Navis' eyes under the big round glasses.

"You can think of sound as ripples on the water surface. During the propagation of sound, the greater the vibration amplitude, the louder it will be."

"That is to say, the reason why the microphone cannot transmit sound beyond a certain distance is also due to insufficient vibration amplitude?"

"good."

Seeing Navis's stunned expression, Lu Qi was quite satisfied, this girl has some talents.

So he said something more.

At the same time, it also answered Navis' puzzlement.

Three 10 minutes later.

"That's almost all. Speaking of which, do you understand?"

Lu Qi's speech was parched. Of course, he couldn't explain and explain class by class like in university courses.

I can only express my mastery and understanding in the simplest way.

For example, in the era of electronic technology later, I didn't talk about it at all.

Let’s go on, it’s an episode that goes into science.

At this time, the sensible Kashina poured Lu Qi a glass of water and brought it over.

Lu Qi took a sip and looked at Navis who seemed to be still processing the information.

"I understand!"

Navis suddenly raised her head, and her voice became louder unconsciously, showing an expression of sudden realization, "If it exceeds a wide range, the sound must not be able to spread, because there is not enough medium, and the sound will dissipate in the process.

Even if I wrap it in copper tubing, it won't work to minimize the sound dispersion. "

She began to deduce herself, stood up, took a book from the shelf, and flipped through pages quickly.

Makes one wonder if she even saw what was on that page.

Finally, she stopped on a page and looked at the content on it: "However, the normal method won't work, you can use this."

Lu Qi stepped forward and took a look. It was a shell-shaped body surrounded by circles.

"The shell of the triangle crab is a very strong shell, and people usually use it to make simple tools." Navis said to herself, "However, this shell can also be used as a medium for sound transmission. It can accommodate sound, It will definitely spread.

The sound travels halfway through it, it will be retained, and it will not be affected when it is transmitted again, and it can continue to propagate, and when the sound passes through the shell, the vibration amplitude will be enhanced again. "

At this time, there was no need for Lu Qi to say anything.

Navis already had the answer in her heart, and her eyes lit up completely: "This way, you don't have to worry about the problem of insufficient medium and vibration when the sound is halfway transmitted!"

Lu Qi looked at the girl in front of him who was asking and answering questions.

Can't help feeling. Genius.

Navis, may be a genius.

It's a pity that I was born in the wrong place. If I was born in Piltover, I think the future will be very bright.

Known as the City of Evolution, Piltover has concentrated many outstanding inventors, and it can be said that it is at the forefront of Runeterra technology.

However, Demacia seldom interacts with Piltover, almost none.

Otherwise, Germany's industrial level can still improve.

(End of this chapter)