~.-~    The Taoist Zhuang Jing never knew that after using a little sand and soda ash, it would form a crystal-like shiny thing. Although I have heard of things like glass in the past, glass, which is rare in the hands of upper-class people, is not something that a Taoist priest in a small descendant temple (a family-style Taoist temple called descendant temple) could see.

After Huang Junming's simple guidance, he personally burned the shiny glass. Taoist Zhuang Jing sighed that it was just like this to turn stones into gold, and he couldn't help but become more interested in what Huang Junming said about the Tao. Hearing Huang Junming's praise, he seemed to feel that his whole body was full of motivation.

"The immortal is praised by the emperor. This is what the Tao should do." Taoist Zhuang Jing said modestly to Huang Junming.

Huang Junming took out three glass balls of good quality from the wooden box, stuffed them into his pocket, handed the remaining glass balls and the wooden box back to Taoist Zhuang Jing, and said casually: "Although this glass is a method provided by me, it is also due to your talent and hard work. I will distribute the three remaining ones by myself. As for whether you give them to someone or keep them as a souvenir, it depends on you. But what I am looking forward to is not just this ball-shaped glass. You can try to make a ornament or something. This ball-shaped thing can only be used as a toy. It is also comfortable to put it outside to look at it, right?! If you have time, see if you can make a few convex lenses or concave lenses for me."

To be honest, the glass ball burned by Taoist Zhuang Jing is really not a good thing. It is a practice making glass. As Huang Junming thinks, it may be difficult to make a cup or something. After all, no one has ever touched it. Making a ornament should be much easier. You have to eat rice one bite at a time, and the road is step by step. Making ornaments is nothing more than making a mold, pouring the glass liquid in, and cooling it is almost done. Although it is not a very difficult thing. But it is still a certain difficulty for now. As for Taoist Zhuang Jing sitting on a few convex lenses, it is basically a modern person who can understand what Huang Junming wants to do.

"Oh, by the way, remember when I saw you that day, you were playing the neon technique of mouth-spraying?" Huang Junming suddenly thought of something before he finished speaking. He said to Taoist Zhuang Jing: "I will teach you a little more. You can reflect the seven-color neon lights without spraying water. Go back and burn a prism with glass, and use a corner to face the direction of the sun, and the neon lights will naturally be reflected on the ground. Go back and try it. Just remember that burning glass is a big deal."

According to Huang Junming's idea, since Taoist Zhuang Jing likes these things, let's teach him something. As a Taoist priest, it is impossible to throw the gold, silver and copper plates directly on it, and the dispersion method of giving him this light is also considered to be his encouragement.

"Xianchang. Just look at it, but what is this convex lens concave lens prism? Is it a mirror made of glass? The glass is so transparent. Although it can reflect human figures, it is not clear?!" Taoist Zhuang Jing was quite interested in Huang Junming's words, but these few nouns made him feel a little confused. What is the mirror? Taoist Zhuang Jing knew that he had not touched a lot before coming to the Tianxian Palace, but Taoist Zhuang Jing really didn't know what the convex lens concave lens prism was.

Huang Junming smiled slightly when he heard the words of Zhuang Jing Taoist, and ordered the monk behind him, "Monk, go and get some paper and pen for me." After that, he pulled Zhuang Jing Taoist and found a stone table to sit down. When the monk brought the paper and pen, Huang Junming explained to Zhuang Jing Taoist while talking.

"The so-called prism is an object made of transparent materials with a triangular cross-section. Do you know what the cross-section is? I don't know? Then I'll give you an example, for example, that tree." Huang Junming pointed to the tree next to the stone table and continued, "Use a saw to cut down the tree, and the cross-section that appears afterwards is the cross-section. Do you understand this time?"

Huang Junming looked at Taoist Zhuang Jing who couldn't stop nodding and continued, "A major feature of glass is that it is quite transparent, and as long as it is made pure, it can produce effects."

"Then..." Taoist Zhuang Jing secretly looked at the object outlined by Huang Junming with a reed pen on the paper, and asked in confusion: "Then what effect will this prism have?"

After hearing this, Huang Junming laughed secretly. The current Taoist Zhuang Jing has some scientists' thoughts. What Huang Junming has the most question on weekdays is why ancient Chinese scientists often discovered various laws and inventions at the forefront of the world, but they often just made records and said what it was, but they said it inexplicably how it came about and what it did. Although Huang Junming finally attributed this to the traditional thoughts of the Chinese people, he looked at the formulas that foreign countries flowed into China and the methods of verifying them one by one.

Most of the naming in textbooks are foreigners, so Huang Junming felt depressed. It would have been fine if the Chinese had not invented and discovered them, but in fact, the Chinese had been invented and discovered these things many years earlier than they did. This made him, as an angry young Taoist priest, feel good about what he should do. So Huang Junming did not have that kind of way to keep his achievements and strive to explain the things in his memory to the most detailed. Although Huang Junming had only a few understandings, he thought that this was also an epoch-making progress in the Tang Dynasty.

"Zhuang Jing, what color do you think this light is?" Huang Junming slowly guided him.

"This is naturally white! It's not right at night, sometimes it's red, and it's not right at morning, it's golden." Taoist Zhuang Jing said repeatedly, and at the end, he seemed to feel that the color of this light was, and he didn't even dare to say it.

When he heard the Taoist Zhuang Jing was a little at a loss at the common light, Huang Junming smiled knowingly. In this feudal era, the situation of Taoist Zhuang Jing was normal. Seeing that Taoist Zhuang Jing was a little confused, Huang Junming then said: "The light we see in normal times is actually white light, but this white light is not that simple. I asked you to make a prism, in fact, to refract the white light and deflect the light. Finally, multi-color light is generated, because the white light is actually a complex light composed of various monochromatic lights. The refractive index of the same thing to different colors of light has different propagation speeds in the same thing. Therefore,

When white light passes through the prism, it will separate the monochromatic lights of various colors to form red, orange, yellow, green, blue, indigo, purple, and seven colors of light, which is the neon light we see on weekdays. By the way, the same is true for your mouth neon technique, but the things that light passes through are just the water mist you spray. What I tell you now is the principle. After you make the prism, you will find it by playing. Remember, we are Taoist priests. We are just to find the development laws of the way of heaven and follow the heavens. Even if we find the rules and know how to do it, it is better to study why this law is formed. Only in this way can we continue to accumulate and make continuous progress."

Zhuang Jing Taoist had taken the paper and pen from Huang Junming's hand for some time, and kept recording it under the prism sketch drawn by Huang Junming. Hearing Huang Junming's last words, Zhuang Jing Taoist stopped writing gently and said to Huang Junming: "I thanked the immortals for their guidance. These principles are saved."

Seeing that Taoist Zhuang Jing was so sensible, Huang Junming couldn't help but sigh that Taoist Zhuang Jing was a talented person. Although he was not famous in history books, he was indeed suitable for doing this scientific matter. Perhaps he would not be considered a great scientist in the future. But he could definitely be called a pioneer among scientists of modern thought.

"Since you understand, I won't say much. Have you played with a gyro last year?" Huang Junming seemed to be very untuned and pulled the gyro on it.

Although Taoist Zhuang Jing did not understand the meaning, he still answered truthfully: "I have played in the path of returning to Xianchang."

"Since you've played it, it's easy to do." Huang Junming said abruptly: "I just talked about how to use a prism to divide a white light into several multi-color lights. Let's think about it in reverse, how to turn multi-color light into one-color white light? It's related to the gyroscope!" Huang Junming instructed slowly and carefully. "In fact, all the colors we see are formed by reflecting monochromatic multi-color light. Think about how to turn multi-color light into white light."

"This...you can't think of the small path?" Taoist Zhuang Jing shuddered.

"If I say you can, you will definitely be able to do it. Think about what I said before." Huang Junming didn't want to cultivate a scientist who only knows how to implement it based on the language he spoke. What he wants is a scientist who can think. Only by exposing his thoughts can he achieve better and greater achievements.

"What the Immortal Lord said before?" Taoist Zhuang Jing started to think constantly. "Gyros." "Gyros." "Gyros are reflected by color light." "Gyros are reflected by color light." "Gyros are reflected by color light." Taoist Zhuang Jing kept thinking about the several key points that Huang Junming had just revealed from his mouth. "Gyros are able to rotate. Color..." Taoist Zhuang Jing seemed to think of something, and suddenly looked up and said to Huang Junming: "Does it be that the color is applied to the gyros, but then the gyros are turned?"

Huang Junming looked at Taoist Zhuang Jing with great praise. This kid was really talented. However, Huang Junming did not give Taoist Zhuang Jing any answer, but just said lightly to Taoist Zhuang Jing: "Since you think so, then do it. After doing it, you will naturally get the answer."

Taoist Zhuang Jing felt itchy now, and he had been waiting for Huang Junming's words. The prism could not be made now, but the gyros and pigments were quite easy to find in the Tianxian Palace. In order to verify his ideas, Taoist Zhuang Jing quickly found the things he needed with Huang Junming's permission and directly painted the gyros on the stone table.

Huang Junming looked at the Taoist Zhuang Jing who was concentrating on applying the paint to the top and nodded again. At least, this kid knew to paint the colors bit by bit in order, rather than painting them one by one.

The gyro is not big, and it doesn’t take much time to apply some pigments. Although it has been almost October now, the weather is still very hot. These pigments are only finely applied, and they dry a lot when the wind blows. Seeing Huang Junming nodding in agreement, Taoist Zhuang Jing excitedly thrust the gyro on the stone table.

"Buzz" "Buzz" gyros rotated on the stone table with his unique buzzing sound.

Taoist Zhuang Jing stared at the high-speed rotating top without turning his eyes. He saw that the colorful colors on the top were now disappearing. Although it could still be seen vaguely, the colors on the top of the top had already merged into white in the rotation. Taoist Zhuang Jing clenched his fists when he saw this situation. If Huang Junming had not been on the scene, Taoist Zhuang Jing might have jumped up. This seemed to him that it was completely impossible to happen. But in his hands, it turned from impossible to possibility. Could he not be excited if he was obsessed with this matter?

As time passed by little by little, the speed of the gyro slowly slowed down. The white touch returned to its seven-color color in the rotation. As the Taoist Zhuang Jing was dumbfounded, it turned slower and slower until it reached the edge of the stone table and fell down with a bang. It woke up Zhuang Jing, who had been shocked by his actions.

"I thank the immortal for giving me all my gifts!" The first thing that Taoist Zhuang Jing did when he came back from shock was not to pick up the top, but took a step back and bowed to Huang Junming, in the hearts of the ancients. This is a secret technique, what is a secret technique? The secret technique is secret technique, but Huang Junming passed this secret technique to himself, and Huang Junming was equivalent to half of his teacher. The ancients respected the teacher and respected the Tao the most, and Huang Junming deserved this prayer to Huang Junming.

"Zhuangjing, this is nothing, get up." Huang Junming has been in the Tang Dynasty for so long and has long been familiar with the habits of the people of the Tang Dynasty. He did not feel that the Taoist Zhuangjing was not used to the way he did, but he became more fond of the Taoist Zhuangjing.

"Xiaodao asked the immortal to accept me as his disciple! Learn this method of Taoism." Taoist Zhuang Jing was also a strange person. He did not get up when he heard Huang Junming's words, but bowed to Huang Junming again. It seemed that there was a posture that I would not kneel up if I didn't accept the disciple.

Huang Jun (the fastest update) Mingxiu saw that Taoist Zhuang Jing looked like this. Although he wanted to accept him as his disciple, in modern times, the old Taoist priest said that his lineage would have at most nine disciples. In the Tang Dynasty, the old Taoist's nagging had long stopped echoing in his ears. If he had no thoughts about the old Taoist, it would be fake. After all, he raised himself to the big one since he was a child, and his feelings were still there. He also began to slowly abide by the words he had said to the old Taoist. Now, Ge Yanlin, Feng Junzi, Mu Xuanzi, Wan Mingzi, Huai Jingzi, Li Yuanheng, Jin Chanzi, Xiaolu, and Wu who is about to become his disciples.

Zhao had already collected nine people. Although he had already driven Huai Jingzi out of the sect, Huai Jingzi still actually occupied a place for his own disciple. The nine disciples were full, and it would go against the wishes of the old Taoist priest. Huang Junming was determined not to do it, but the current Zhuang Jing Taoist is indeed a good seedling, and he is not old enough to do these things. As for Jin Chanzi, Huang Junming still hopes that he will spread Taoist thoughts in the Western Regions, and it is impossible for him to keep studying this science and technology. This makes him feel a little embarrassed.

"Zhuang Jing, if I have no choice, I will not accept you as a disciple. I have my own difficulties." Huang Junming thought for a few minutes and said to the Taoist Zhuang Jing who was kneeling on the ground: "But if you are willing, I can accept you as a registered disciple."

"I am willing to do it, but I am willing to do it." Taoist Zhuang Jing did not seem to have expected that Huang Junming could really accept himself as his disciple. He had heard Huang Junming's first half of the sentence before, but in the second half of the sentence, the roundabout way was, and this registered disciple was already very good.

"Although I still call myself a path?" Huang Junming said angrily.

"Oh, I have seen Master." Taoist Zhuang Jing said respectfully in his secret joy when he heard Huang Junming's words. As soon as he finished speaking, he kowtowed nine times hard to show his respect for Master.

"Get up, nine are the grades below the Heavenly Dao, so I can only accept nine personal disciples. I cannot give you a title of a personal disciple. I hope you don't have any complaints. Everything is decided by chance. Besides you, my two other registered disciples, Qingfeng Mingyue, have died, and the other is taking care of the life of the teacher. You know, I won't say much. In the future, this subject will be your management professor. After Jin Chanzi came out of seclusion, he will make other arrangements for his teacher." Huang Junming said to Taoist Zhuang Jing.

"Disciple, please obey the teacher's order!" Taoist Zhuang Jing bowed again to express his understanding.

"Don't need to be too polite. I don't have that much politeness." Huang Junming signaled Taoist Zhuang Jing to sit down and said again: "Come, come, come. I will tell you what convex lenses are and concave lenses."

Now Taoist Zhuang Jing has become his disciple. Although he is only a registered disciple, his identities are different. Huang Junming is naturally more enthusiastic than before.

"Please ask the master to show me." Taoist Zhuang Jing was quite persistent in these etiquettes. Among these disciples of Huang Junming, there were actually not many who insisted on etiquettes like him, which made Huang Junming feel quite uncomfortable.

Huang Junming pulled the paper and pen and drew it on the paper again. This time he drew not only a convex lens, but even some convex lenses were used on it. After drawing, he handed the paper and pen to Taoist Zhuang Jing, signaling him to take notes by himself, and then said.

"This convex lens is also made based on the principle of refractive light. Let me first talk about convex lenses. The characteristic of convex lenses is a lens with a thicker center and a thinner edge. Convex lenses are divided into double convex, flat convex and concave convex. These forms are also drawn by me. Convex lenses have the function of convex light convex, so they are also called convex lenses. Thicker convex lenses have the functions of convexity and convexity, which are related to the thickness of the lens. Do you know the principle of making fire in ice?" Huang Junming asked Taoist Zhuang Jing.

Taoist Zhuang Jing is indeed interested in some things. When he heard Huang Junming ask about himself, he quickly replied: "Master, my disciple has heard that Liu An of the Western Han Dynasty said in his book "Huainan Wanbi Shu": "Cut the ice to make the round, lift it to the sun, and carry the shadow with wormwood, and then fire will be born."

When Huang Junming saw that Taoist Zhuang Jing really knew, he couldn't help but look at Taoist Zhuang Jing with admiration, and then said: "The so-called "cutting ice to make the round" refers to the method of making ice convex lenses; "Use moxa to inherit the shadow", moxa is moxa velvet used for acupuncture, which is a flammable object; "shadow" refers to the point where the sunlight gathers together, and the teacher calls it the focus. You can also try this point. Our Tianxian Palace does not lack ice and moxa velvet. Go find a tin pot! Come back with some hot water, and I will demonstrate it to you!"

Zhuang Jing Taoist heard that Huang Junming wanted to show him how to use ice to make fire, and he was so happy that he was very happy when he heard Huang Junming instructing him to pick up things. What else would he be unhappy? He couldn't be happy yet. Without Huang Junming's instructions again, he went to find something. There was a tin pot in every Taoist priest's room, but only the ice in the kitchen can be stored, and there is no shortage of hot water in the kitchen, so Zhuang Jing Taoist trotted all the way to the kitchen, and after negotiations with the Ice and Fire Taoist, he took the things and ran back.

The bottom of the tin pot in Tianxian Palace was a concave spherical surface, which was the most suitable for use. Huang Junming poured hot water into the tin pot, took a thin piece of ice, and placed it on the stone table. As for the paper full of notes, the Taoist Zhuang Jing kicked it in his arms like a treasure, and there was no danger of wetting.

Under the gaze of Taoist Zhuang Jing, Huang Junming's tin pot filled with hot water was ironed on a piece of ice. He soon obtained a crystal clear ice convex lens. However, Huang Junming's convex lens is much larger than this modern glass convex lens. In the words of the ancients, it was Bing Mingying's shape and slightly shallow. As for why Bing Mingying's shape is large and slightly shallow, Huang Junming also has his own reasons. The focus ability of the convex lens is expressed by the square of its diameter to the focal length. Therefore, a lens with a large diameter is conducive to improving the focus ability. Those with shallow protrusions have a long focal length, while a long focal length is not conducive to focusing. This is Huang Junming's consideration that ice will emit cold air, and the downward cold air is not conducive to fire, so it is necessary to increase the focal length appropriately to reduce the influence of cold air on the temperature near the focus point and make it easier to make fire. Huang Junming did not want to end in failure when he did the experiment for this new apprentice for the first time.

As for the method of making convex lenses for this ice, Huang Junming still has to thank Zheng Fuguang of the Qing Dynasty. Zheng Fuguang also succeeded slowly based on the records in Liu An's "Huainan Wanbishu" after several tests. It was a barely understood person, Huang Junming.

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Change it tomorrow, change it back, change it back.

~.-~
Chapter completed!