No Regrets In Flourishing Tang

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Li An knows that no one believes that sunlight is colored. After all, whether looking at the sun or objects illuminated by sunlight, you can intuitively see that sunlight is not colored, but Li An says that sunlight is colored Yes, they naturally do n’t understand it.

Of course, what Li An said is the fact that the sunlight does not look like color, but this is because the light of various colors is mixed together, and the final display is the light we see. As for this compound What color is the light, it is really difficult to say, that natural light is the most suitable.

“Haha! I said that light is colored, you do n’t believe it, because the light you see is not colored, know why this is because a variety of colored lights are mixed together, and naturally no color is seen. , I know everyone wo n’t believe it easily, then let ’s do 2 experiments. After these 2 experiments are done, you can understand some of them. ”

After Li An finished speaking, he signaled 2 Assistants to immediately start preparing experimental equipment to complete this very important experiment.

The first experiment is very simple. It is to prepare three spotlights of different colors, connect the power interface in the lobby to start the experiment, and also need to prepare a white cardboard.

“What is the name?”

“Let’s just look at it. This is the task that Your Majesty gave us. We can do it in earnest. Why care about what Monster Li does?”

“I’m worried that Emperor’s Grandson will be attracted by these tricks and ingenuity, and I don’t like learning in the future, so it’s difficult to do.”

“That’s right! These all are tricks and tricks, ordinary artisans learn just fine. Emperor’s Grandson is expensive, or should you learn poetry etiquette.”

“The Great Tang right now needs these amazing tricks! This is the purpose of Your Majesty to let Emperor’s Grandson learn these, but I also think that it is enough to let the great craftsmen of Great Tang understand these. Emperor’s Grandson is Great Tang ’s Imperial Family will never run into building machines after learning these things! ”

“Yes! Where should these things be learned by Emperor’s Grandson, Emperor’s Grandson should learn poetry etiquette.”

“This Minister Li will do this. I heard that his cooking is still very difficult to deal with? The food he makes is more delicious than the master chef in the palace. This is really … hey!”

Taking advantage of the gap between Li An and Assistant preparing experimental tools, 8 Old Guys talked in a whisper. Anyway, their position was at the end of the lobby. The distance from Li An was the furthest away. As long as they had a lower voice, Li An still It’s really inaudible.

And from their words, it can also be clearly seen that in their hearts, only poetry and book etiquette is the right way, the rest are tricks and tricks, not worth mentioning, especially cooking, that is a shameful technique , Something that only women can learn.

According to later generations, these Old Guy thoughts are very typical masculinity. How can cooking be a woman’s patent? Of course, in the era of Great Tang, in ordinary families, cooking is indeed a woman ’s patent, but in many restaurants and restaurants, the situation is different. Most of the cooks are men, so-called The status of chefs is relatively low among all occupations, and Li An is distinguished, and often cooks in person, which makes them very uncomprehensible.

The equipment for the experiment was soon ready to be completed. Li An first turned on a green spotlight and let it shine the light on the white cardboard. Then, he asked, “Look, what color is this light.”

“The green light is green.”

All Emperor’s Grandson know that the light is green, this is too simple.

Then, Li An projected the blue light on the white cardboard again, and continued to ask: “Then look at it again, what color is it.”

“Blue, it’s blue.”

Emperor’s Grandsons were very obedient and answered seriously.

Li An finally turned on another spotlight, and then continued to ask: “What color is this?”

“Red, is the light of red.”

Emperor’s Grandson continued to answer.

Li An said with satisfaction: “Everyone is right. The three beams of light are green light, blue light, and red light. The three beams of light are clearly displayed on white cardboard. There are 3 large light spots, red ones, green ones, and blue ones, but you know, what happens when you put these 3 beams together? “

After looking towards the Emperor’s Grandson, looking forward to seeing them, so gently adjust the angle of the spotlights, so that the 3 beams gradually approach a point, while maintaining the shape of the two characters.

When the three beams partially overlapped, a magical phenomenon occurred. The color of the spot where the overlap occurred changed a lot. The position where the red spot and the green spot overlapped became the yellow spot, and the position where the green spot and the blue spot overlapped. It became azure, and the position where the red spot and the blue spot overlapped became the product red. Finally, when the 3 beams of light all overlapped, all the colors disappeared, and it appeared on the white cardboard. The big bright spot is actually the white light, but the cardboard is also white, so I can’t see that color that’s all.

After the three beams completely overlapped, Li An moved it away a little bit to show all the superimposed colors just now.

“It’s amazing, the lights of different colors are superimposed together, and there are so many changes, which is really interesting.”

“Yes! These children usually fall asleep when listening to listening, but now all of them lively dragon and animated tiger, one by one is excited, the class is very serious!”

“This is not a good thing! In the future, Emperor’s Grandson will like to listen to these tricks and tricks, and the poetry etiquette will be even more reluctant to learn.”

“This is not false, but this is Your Majesty’s will, and we can’t disobey it!”

“Forget it, let’s go step by step! If Emperor’s Grandson are not willing to learn poetry etiquette, we will blame Minister Li, as long as I wait for serious teaching and I have no doubts.”

Several Old Guys whispered together.

And these young Emperor’s Grandson stood up excitedly, even murmured in doubt.

Li An looked towards Emperor’s Grandson, loudly said: “You all see it! The light of different colors is mixed together and it becomes white, so is the sun light, which is also colorful, but because of these various colors The light is all mixed together, so I ca n’t see the color anymore, but I have a way to separate the color of the sunlight. This is the next experiment we are going to do, and it is a principle with the rainbow. “

Having said that, let 2 Assistants start preparing for the experiment.

This experiment is very different from the previous experiment. The previous experiment was to combine multiple colors of light. The experiment of this time is to separate the different colors of sunlight, so that people can be very See intuitively.

In this time experiment, Li An prepared a larger Prism. It seems that this experiment has been done before. However, it is estimated that these Emperor’s Grandson have not seen it. Even if I have seen it, I can do it again to deepen the impression.

In the experiment of 3 prisms, direct sunlight must be used, otherwise, and so on cannot be seen, but there is no direct sunlight in the house, and the classroom is indoors, so, you must rely on the emitting mirror.

An Assistant took a plane mirror with a tripod and walked out of the room. Then, using the reflection principle of the mirror, the sunlight was injected into the room through the window of the room and aimed at the location where Li An needed to be tested. Then fix the reflecting mirror.

Li An saw that the sunlight had been reflected on her body, so she immediately picked up Prism and placed it where the light passed. Suddenly, the magical phenomenon was launched. On the white cardboard behind Li An, a rainbow appeared. The same rays of light, very beautiful, very beautiful.

When Emperor’s Grandson saw such a scene, they stood up very interestedly and whispered in a whisper, they could see that they wanted to know the reason.

The 8 Old Guys also saw this kind of experiment for the first time. When they experimented many years ago, they just heard about it but did n’t see it with their own eyes, and this amazing phenomenon surprised them.

A Prism that looks very unremarkable can actually create a rainbow artificially. This is really surprising. It makes everyone startled.

Li An said while hot ironing: “Through these two experiments, we can already see that the sunlight is colored, but after mixing together, it is what we see, but as long as you use Prism, you can make the sunlight real The colors show up, do you know why? “

After looking towards Emperor’s Grandson.

“Because this is the refraction of light.”

An Emperor’s Grandson said.

Li An is very happy with the nodded and said: “It ’s right to say that this is because different colors of light have different angles of refraction, so after passing through Prism, they will appear in different positions, so we will see When it comes to the rainbow, this is an artificial rainbow, so do n’t be surprised when you see the rainbow again. This is because light refraction occurs. “

“Sir, rainbows always appear after rain. Why does sunlight refract only after rain? Is there any Prism in the sky after rain?”

An Emperor’s Grandson asked very puzzled, obviously it was a brain.

Li An laughed, opened the mouth and said: “Your question is very good. Rainbows appear after the rain, which is usually not there. This is because after the rain, there is still some water vapor in the sky, that is, small water droplets, when the sun When the light passes through these small water droplets, it will be refracted, thus showing the true color of sunlight, that is, the rainbow we see, but these small water droplets will soon be dried by the sun, so the rainbow continues It wo n’t take long, and it will disappear completely in a short time. Now let ’s get it! But 10000000 do n’t say that there are Prisms, haha! “

“hahaha!”

The Emperor’s Grandson who was attending the class all laughed. This atmosphere is incomparable to other courses. It can be seen that the content of Li An’s class is interesting. Emperor’s Grandson likes to listen very much.

Afterwards, Li An drew the Prism’s light path diagram refracting different colors of sunlight carefully and explained it patiently. Although some people don’t understand very well, it will always be effective to speak a few more times.

After speaking about this part of the refraction of light, Li An gave Emperor’s Grandson a moment to digest and absorb this part of the knowledge. If they do n’t understand, feel free to come and ask. Li An will naturally seriously explain it again. These Emperor’s Grandson are not fools, as long as they teach seriously, impossible cannot, as long as they believe in themselves.

“Senior, am I okay?”

In this slot, Li An walked to the end of the lobby and chatted with 8 Old Guys.

“Minister Li speaks very well! The sound is vivid and attractive to you Emperor’s Grandson.”

“Yeah! Yeah! This class is the only one who hasn’t dozed off. I’ve watched it several times, and indeed no one has dozed off, haha!”

“After listening to Minister Li’s class, I have also benefited a lot! I used to see rainbows before, but I don’t know how rainbows are formed in this way. As long as there is water vapor in the air, rainbows can be produced. A real rainbow comes out. The rainbow seen with Prism is straight. Compared with the rainbow after the rain, there is still a huge gap. “

“Yeah! Yeah! According to what Minister Li just said, as long as there is a lot of water vapor in the air, a rainbow can be generated. It is not difficult to sprinkle some water on the sky. I don’t know if I can see the rainbow!”

These Old Guys still clearly do not believe it, and feel that Li An’s lectures lack sufficient basis, and there are many weak spots that they think.

However, Li An has been prepared for a long time, how could he be stumped by these Old Guys, or he wouldn’t shoot, as long as he shoots, these guys will be convinced.

“This what difficulty is there, isn’t it just to make a real rainbow, I’ll let the followers prepare, and wait a moment.”

Li An said very carefully and turned around to explain to the 2 Assistants and let them go immediately to prepare.

After waiting for a moment, Li An walked to the podium and opened the mouth and said: “Today is limited, so I can only talk about it here. I will talk about the situation of reflection next time. I will take you before the class. Go outside to see the rainbow. Although it is not raining now, you can artificially make some light rain to let small droplets in the air, so that you can see the rainbow. Let ’s go, what are we waiting for, go outside to see the rainbow.

After finishing speaking, Li An took dozens of Emperor’s Grandson, left the classroom where he was in class, and went to the courtyard outside to watch the rainbow.

8 Old Guys see Li An like this, so naturally they dare not ask too much, so they have to come out and want to see how Li An artificially made rainbows.

The space of the yard is still very large. After all, here is the Hundred Descendants Courtyard, the space is naturally not lacking, and in the vicinity, there is also a higher terrace, Li An ’s 2 assistant then went to the elevated terrace, and Carry enough water.