Destiny Only Han

Sanchuan County.

Luoyang.

The Tangtang Luoshui River passes through the city. The former Imperial City of the Eastern Zhou Dynasty was at the foot of Mang Mountain, to the north of the Luoshui River.

The haze of the war has dissipated, and this historic city has regained its former prosperity.

On the long street, there are many pedestrians and cars and horses.

In the hotel and guesthouses, you can see scholars with wide robes and long sleeves, and merchants in gold and silver everywhere, all hanging out with friends, drinking and having fun, and even the graceful Hu Ji sang gracefully in the melodious and lively music. Dance, showing off the majestic elegance of the Han Dynasty.

But those happiness have nothing to do with Liu Ying.

After all, he came to Luoyang with Lu Pheasant to watch the peonies. The important thing is that Lu Yu, Xu Fu and others also came with him. Naturally, it was not easy for him to sneak out to watch the foreign girls dance...

Therefore, he could only turn his attention to work and raising children.

For example, where he is heading now.

Royal Special Equipment Research General Administration Luoyang Research Institute.

For others, this place is a place of work, but for him, it is a family paradise...

After all, behind him, Liu Qi, Liu De, Liu Hong, Liu Wu, Liu Yan, Liu Xuan, Zhang Dan, and Zhang Wuji lined up. Except for Liu Qi, who had a thoughtful look on his face, the remaining people were all elated.

Without him, you don’t have to do homework when you go out to play...

On the other side, there was Zhang Buyi, who was specially allowed to go out to play by Liu Le, but was forcibly captured by Liu Ying because he was not worried about the scarcity of the population but the inequality, and Liu Le, who was looking around with curiosity.

Zhang Buyi was full of lovelessness.

He stared at the plaque at the door for a long time, and then said angrily: "I came to Luoyang for a spring outing and to enjoy the flowers. How can you come here hundreds of miles away and let me see this?"

Liu Ying was too lazy to pay attention to him, just raised her head and walked forward.

Liu Le said with a smile: "You're here, let's take a look!"

Zhang Busuo followed helplessly.

In fact, he wanted to go see the peonies in full bloom with Liu Le, who was disguised as a man, and then find a tavern, taste peony wine, and listen to those exotic dances and unknown ditties...

Well, that's about as far as he can go.

After all, he is just a pretty boy who feeds Princess Shang...

Therefore, after Liu Le spoke, he could only follow Liu Ying step by step and walk into this crowd of men with zombie faces...

Liu Ying was familiar with the road and found where she wanted to go.

There is a place to study lenses.

The shelves and countertops were filled with all kinds of glass lenses. There were only two or three near the door. The researcher who was immersed in writing notes looked back at Liu Ying and others who walked in, and then he was busy with his work again. matter.

As for the more researchers in white coats, they didn't bother to pay attention to what was happening around them, and they looked completely deaf.

work makes me happy
Invest your limited life into unlimited research.jpg
Liu Le was a little curious.

The group of indifferent guys in front of her were unkempt, with messy beards and hair, but their clothes and faces were very clean, which fit her stereotype of science geeks very well.

However, her attention was quickly attracted by those bright glass mirrors, and she walked over.

This is also in line with Liu Ying’s stereotype of demented women...

Zhang Buyu picked up a lens and asked in a low voice: "What is this for?"

Liu Ying looked at it carefully and replied: "Car lights. Well, they are lenses that will be used in cars for night lighting in the future."

Zhang Busuo nodded in understanding: "So many prisms? It's strange, but it also looks familiar..."

"Of course it looks familiar." Liu Ying lowered her voice and said: "When the carriage is traveling at night, the oil lamp hung on the carriage has a similar structure for the glass outside..."

"However, the lights hung on the carriage are not used for lighting, so others can see themselves. The lights on the car can be used for lighting."

Zhang Buyi nodded again: "Yes. The oil lamp is very dim, and it is difficult to see clearly from a hundred meters away. Well, I am talking about letting others see clearly..."

"I understand what you mean." Liu Ying agreed and said again: "But that's only one aspect."

Zhang Buyu answered: "What about the other side?"

Liu Ying ignored him and looked at Liu De: "I remember I told you about the scattering of light yesterday. Come and tell your uncle!"

Liu De was confused.

Next to him were Liu Hong and Liu Wu who were secretly happy.

Well, they are primary school students. Primary school students only need to learn addition, subtraction, multiplication and division. It does not involve subjects such as physics and chemistry.

At this moment, they both just hope that time can stand still.

In this way, they don't have to rack their brains to recite a lot of laws and theorems 'invented' by their father...

Liu De stumbled and carried it under Liu Qi's low voice.

"The uneven clumps present in the substance cause the light entering the substance to deviate from the incident direction and scatter in all directions. This phenomenon is called the scattering of light. The light that spreads in all directions is scattered light. Like the absorption of light, light Scattering also weakens the intensity of light passing through the material..."

Liu Ying nodded: "Not bad."

"Although these theories are obscure, you may not be able to use them in your life in the future, but as a prince, you should have some understanding of them, even just a little bit, so that you don't have to worry about being deceived by some very low-end scams. .”

Liu De cupped his hands and said, "Thank you for your teaching!"

Liu Hong and others followed suit.

Zhang Buyu squinted his eyes at Liu Ying, feeling that the guy seemed to be criticizing Sang Huai again.

Well, he invested in a perpetual motion project two years ago.

Although the liar was sent to the Beiting Protectorate to dig potatoes, this shame was destined to follow him for the rest of his life...

Liu Ying felt secretly happy.He continued: "It is the existence of this scattering that allows people at a distance to observe only subtle light, even if the brightness of the light source is increased, it will not help."

"So we need to concentrate the light so that it all goes to the same place."

"This uses the principle of concave reflection."

"The car light lens you see uses exactly this principle."

Zhang Buyi was bewildered.

After all, when he was studying, he mainly studied Confucius's poems and clouds, and occasionally he did some calculations. At this time, it was really difficult for him to understand what light, lenses, and reflections were.

But Liu Ying was very happy.

This was the reason why he forcibly brought Zhang Buyu.

If it was just him who came to inspect the work and entertain his own children, it would actually be no fun for him.

But when Zhang Buyi came, everything was different.

After all, Zhang Buyi is an out-and-out 'ancient'...

Well, there is also the demented girl on the other side with beady eyes and a confused face...

Liu Ying picked up the car light, turned to look at Liu Qi, Zhang Dan, Liu Hong and others who were full of curiosity, and said with a smile: "Install a reflector behind the light source, and let the light source be at the focus of the reflector."

"This way, when light hits the mirror, it will be reflected in the same direction."

"But the light that has not passed through the reflector will still spread out, which will cause the light to be scattered and wasted because it is not concentrated enough."

"So, how to solve it?"

Facing Liu Ying's gaze, Liu De shrank his head back.

The low-school students also had the same expression.

Liu Qi thought for a while, and Dou Yifang often told him that the concept of 'the tree is as beautiful as the forest will be destroyed by the wind' took over, so he lowered his head and said nothing.

At this moment, Liu Ying finally understood the classic expression that the old professor who used to teach them often showed.

But he is different from the old man who hates iron.

The old professor taught a group of leeks who tried to change their destiny through reading, while Liu Ying faced a group of nobles who were born with silver spoons in their mouths and were destined to live a lifetime of rich clothing and fine food.

Therefore, Liu Ying said to herself: "At this time, we install another lens in front of the light source, so that the light source is at the intersection of the lenses, so that when the light passes through the lens, it will emit in parallel."

"But that creates a second problem."

"In order to collect all the light sources, the lens will become very thick. On the one hand, it is heavy, and it is even more difficult to make."

"And the solution is simple."

"Using the principle of refraction of light, we leave a rectangular gap in the middle of the lens. When the light enters this gap from the glass, it will be refracted and deflected. After the light enters the lens from the gap again, it will be deflected again."

"Moreover, the direction after deflection will be consistent with the original direction!"

When Liu Ying said this, she paused for a moment.

Around him, a large number of researchers in white coats gathered, their eyes bright and their faces full of expressions of determination.

After all, the theory Liu Ying mentioned was the subject of their lifelong research.

"In this case, we can cut a few more holes in the lens to reduce the weight of the lens!"

Liu Ying waved her arms and made two gestures in the air:

"At this time, many tooth-like structures will appear in the lens. If these structures are translated to a cross-section, it will be a Liu Ying lens!"

There was a coughing sound all around.

A middle-aged researcher in his 30s said seriously: "I'm going through the lens now. Although I don't know your identity, I must not call His Majesty by his first name!"

Liu Ying nodded lightly.

Zhang Buyu asked curiously from the side: "You put so much effort into making a car light?"

After he finished speaking, he regretted a little.

The group of researchers in white coats all cast disdainful glances at him.

Silver pewter tip.

This is what everyone has in mind.

Liu Ying flew up happily.

He suppressed the smile on his face, looked at Zhang Buyi and said: "This kind of lens can not only be used for navigation, that is, lighthouses, ship signals, etc., but can also be used for cameras, car lights, etc."

“There’s also a product that’s being worked on, a projector.”

"With this new instrument, we can watch movies..."

"It's a pity that projectors are not available yet."

"Nowadays, this kind of Liu and Jinshang lens is one of the most popular products. You will see it when you return to Chang'an City!"

"Huh? What is it?" Liu Le tilted his head.

Liu Ying looked at her and said:
"Chang'an City is overcrowded, and sometimes a blockade can block the area for several miles."

"I have observed that this congestion is caused by disordered walking."

"But it would be too expensive to have someone on duty at every intersection around the clock."

"Therefore, this kind of lens is used as a traffic light. The light is on to stop and the light is off to pass. Anyone who violates the traffic light will be caught and beaten. Those who do not change will be sent to Tiannan Prefecture to keep company with the rabbit monsters there!"