Chapter 81 Miss Crown Guard is so talented!
After a breakfast.
The four of them decided to set off, and the destination was naturally where Kashina's friends were.
That is, the Menke family.
The carriage drove all the way.
After a while, we entered a famous square in the royal capital.
It's called Rue du Lang.
This street is an industrial center in the royal capital, where many famous craftsmen, sculptors, artists, etc. are located.
It covers a vast area and is extremely lively.
Walking some distance further is the gate of the Menke family.
Looking up, the gate in front of me was actually made of Forbidden Demon Stone, with white stone pillars connected one after another, and patterns engraved on them, which looked extremely majestic.
Kashina walked in front and pulled the rope at the door. Soon, a figure appeared.
Seeing that it was Kashina, he immediately bowed and said: "Ms. Bouvier, what are you doing here?"
"I'm looking for Navis. Is she there?"
"Miss Navis should be here." The gatekeeper just raised his head and saw Lu Qi standing behind Kashina. He felt that he looked familiar. After taking a closer look, he quickly lowered his body and said respectfully again, "Hello, Your Highness the Prince."
"Um."
Lu Qi replied.
When the gatekeeper looked up again, he saw a girl with brilliant blond hair and a delicate and lovely face, and lowered his head again.
However, when he lowered his head this time, he took another look: "Miss Crown Guard, Miss Laurent, hello you two."
open the door.
"You should know where Miss Navis is, do you need me to lead the way?"
asked the janitor.
"No."
Kashina shook her head.
The four of them entered Menke's house, and Lu Qi looked around.
I found that the Menke family is not only grand in front of the house, but also quite grand inside.
A five-story building stands as the center of the estate, from which the architectural complex spreads throughout the estate.
These styles are all more modern.
After walking a few steps, there is a main courtyard. In the middle of the main courtyard stands a white statue.
The statue was probably carved based on Durang himself. It is a middle-aged man who looks gentle and has no sense of power but a kind face.
At this time, Kashina said: "There are five direct brothers and sisters in this generation of the Menke family. The Navis we are looking for is the daughter of the youngest, Mrs. Shira."
On the way, Lu Qi got to know Navis briefly from Kashina's mouth.
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 aristocracy, Sheila should have married.
But that ordinary person, Navis's father, died not long after giving birth to Navis.
Sheila's mother brought the two of them back.
"This friend of mine is a bit lonely. I don't even remember how long it has been since she went out."
Kashina said as she walked.
At this time, she had already led the three of them to Navis's residence.
Then he reached out and knocked on the door.
A weak voice immediately came from inside: "Who is it?"
"I am Kashina."
"Here we come, wait a moment!"
Soon, there was a sound of chickens and dogs jumping in the room, and then the sound of bare feet on the floor. Not long after, the door was opened.
The person who opened the door was a local girl wearing unattractive brown clothes, wearing two whips casually, and two big round glasses that almost covered half of her face.
Her bare feet were really beautiful.
Behind him, there were pages flying in the sky, and the room looked chaotic.
This is Navis.
As if she didn't expect so many people standing outside the door, Navis was startled. She wanted to close the door immediately, but was blocked by Kasina who had expected it.
Then he was forced into a position.
Navis's strength was obviously no match for hers, so she had no choice but to get out of the way.
I hurriedly ran to put on my shoes.
After entering the house, Kashina took Lu Qi and introduced them.
"Your Majesty, Your Highness, hello."
Navis looked down at Lu Qi at this time and saluted.
Lu Qi looked at her and said nothing for the time being. At this time, he vaguely felt something.
Seeing that Lu Qi didn't express anything, Navis kept her head lowered, maintaining a saluting posture and not daring to move.
Lux and the other three were a little confused when they saw this.
Then he saw Lu Qi circling around Navis. After circling around, he suddenly reached out and took off her big round glasses rashly.
A panicked expression suddenly appeared on Navis's face, and she was extremely nervous.
After taking a look, he took it back to Navis, and the nervous girl breathed a sigh of relief.
At this time, Lu Qi used one hand as a palm and the other as a fist. He patted it with a snap sound, his expression relieved.
This strange behavior finally made Lux couldn't help but ask: "Excuse me, what are you doing?"
"Sure enough, a girl like this with a dull look wants a reversal."
Lu Qi answered this question to himself.
The moment he saw Navis, he had a vague feeling.
When he took off his big round glasses, he revealed a frail, pale-looking face, but with very good-looking features.
Isn’t this a reversal!
Well, it doesn't really count, because there is a portrait of Navez's mother, Sheila, when she was young in the room. She was obviously a great beauty.
Therefore, as her daughter, Navis, it is difficult to see where she is going.
Hearing Lu Qi's words to himself, the three girls were obviously speechless.
"How can you call a girl rude to her face?"
Lux gave him a roll of her eyes, as if she had a premonition of what Lu Qi was going to say next, and immediately added, "Not even behind your back!"
Lu Qi looked at her in surprise, he didn't expect that this could be blocked by you.
Miss Crown Guard, you are so talented!
"Look, you guys are obviously confused."
In response, Lu Qi sighed with a look of understanding on his face, "You think I'm hurting her, but one day when she dresses up carefully, it will be you who get slapped in the face."
Hearing this, Lacus didn't bother to pay attention to him, and pulled Navis away: "Don't worry, he is called intermittent psychosis."
When Navis heard this, she quickly waved her hand: "No, I don't care."
She really didn't care, after all, there were more than one or two people who said she was stupid.
But this prince seems really strange.
Seeing that several people really ignored him, Lu Qi shook his head and started walking around the house casually.
He saw many strange objects and papers all over the floor, which were painted and melted.
After a while, he came to a conclusion.
Navis should be a science girl.
At this time, Lu Qi noticed something and picked it up. They were two trumpet-shaped things with a line connected 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, stood up subconsciously when she heard Lu Qi's question and replied nervously: "Your Highness, that is the microphone I invented."
"microphone?"
Hearing this, Lux also stood up curiously.
When she came, Lu Qi handed over one of the speakers.
Lux took it and walked a few steps until she reached the farthest point of the line, about seven or eight meters away.
Then she spoke into the speaker: "Hey, can you hear me?"
Lu Qi didn't even need to raise the speaker, he looked at Lux on the other end and said, "Isn't this nonsense?"
So Lux couldn't help but asked in confusion: "So what is the use of this microphone?"
The distance between her and Lu Qi meant that they could communicate normally even if they spoke normally.
Navis showed an embarrassed expression and said sheepishly: "So it's useless."
Lu Qi turned his head and looked at the small inventions in the room. They all seemed to be made by Navis, and they seemed useless.
"So you've been at home for so long and you've just come up with some useless products?"
he said.
Hearing this, Navis lowered her head and said weakly: "Yes."
Although it was sad to be called useless this time, I had to admit that what Lu Qi said was the truth.
Lu Qi then added: "Actually, I think you just have too many ideas."
Unexpectedly, Lu Qi had more to say, so Navis raised her head, seeming a little confused.
"You don't seem to be focusing on one thing."
Lu Qi picked up the paper on the ground and looked at it. There were several types of things recorded on these papers, but the dates of these types were not far apart.
This shows that after Navis researched an object and found it useless, she decisively gave up and then devoted her attention to the next one.
Because of this, she failed to come up with a useful invention.
Hearing this, Navis lowered her head in shame.
Lu Qi looked around and actually found some small inventions that would definitely be useful if he continued to study them.
However, Navis did not persist.
"Like this, microphone, do you know why sound can travel between two speakers?"
"Because there is a medium of transmission between them."
Navis replied subconsciously.
Lu Qi continued: "Yes, the rope is the medium through which sound propagates, but have you found that when it exceeds a certain distance, the sound cannot be transmitted?"
Navis nodded, this was the result of several of her attempts.
"Because, when the distance is long, the sound propagation is subject to a lot of interference." Lu Qi played with the speaker in his hand, and then asked, "Do you know how sound propagates?"
Faced with this question, Navis thought for a while and replied: "I think sound transmission must require some kind of substance."
She was able to vaguely answer.
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 turned it into a medium."
At this time, Kashina, Lux, and Fiona were sitting aside, watching the two people talking, and suddenly felt a little unable to integrate into it.
"medium?"
Navis was a little confused for the first time.
Lu Qi said: "There are many kinds of media, including objects, gases and even liquids. Have you ever tried whether sound can be transmitted in an environment without air?"
Navis shook her head.
"I'll tell you the answer directly. Sound cannot propagate in a vacuum environment. It can only propagate through a medium, and this medium also exists in the air we breathe."
Lu Qi said, took a breath and asked again: "Do you now know why sound cannot spread 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 perform the function of carrying sound to travel longer distances."
Lux, Kashina, Fiona: (⊙⊙)
They couldn't understand it at all. They raised their heads and began to wander.
"Then you know that sounds have high and low levels, and what does this level pass through?"
"What?"
"vibration."
As they chatted, a glimmer of light gradually appeared in Navis's eyes under her big round glasses.
"You can think of sound as ripples on the water. As the sound propagates, the greater the amplitude of the vibration, the louder it will be."
"In other words, the reason why the microphone cannot transmit sound beyond a certain distance is that the vibration amplitude is not enough?"
"good."
Lu Qi was quite satisfied when he saw that Navis had a somewhat enlightened look on her face. This girl had some talent.
So, he said something more.
At the same time, he also answered Navis’ confusion.
Thirty minutes later.
"That's about it. Speaking of which, do you understand?"
Lu Qi's mouth was dry as he talked. Of course, he couldn't lecture and explain class after class like he did in university courses.
I can only express what I have mastered and understood in the simplest way.
For example, in the electronic era later, I simply didn’t talk about it.
If we continue talking, it will be an episode of Entering Science.
At this time, the sensible Kashina poured a glass of water for Lu Qi and brought it over.
Lu Qi took a sip and looked at Navis opposite 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 realization, "If it exceeds a large range, the sound will definitely not be able to spread, because the medium is not enough, and the sound will dissipate in the process.
Even if I wrapped it in copper tubing to minimize sound dispersion it wouldn't work. "
She began to reason on her own, stood up, took down a book from the bookshelf, and flipped through the pages quickly.
Makes you wonder if she even read the contents of that page.
Finally, she stopped at a page and looked at the content: "But the normal method won't work. This will do."
Lu Qi walked 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. 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 absorb sound. It will definitely spread.
The sound will be retained after passing through it, and will not be affected when it is transmitted out again. It can continue to propagate, and when the sound passes through the shell, the vibration amplitude will be enhanced twice. "
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 transmitted halfway!"
Lu Qi looked at the girl in front of him who was asking herself questions.
I can't help but sigh. Genius.
Navis, may be a genius.
It's a pity that I was born in the wrong place. If I had been born in Piltover, my future would have been bright.
Piltover is known as the city of evolution and is home to many outstanding inventors. It can be said to be at the forefront of Runeterra technology.
However, Demacia rarely interacts with Piltover, almost none at all.
Otherwise, Germany's industrial level can still improve.