Chapter 1,747 Camera

Zhao Bai let Zhao Xu support him and walked forward, and said with a wry smile: "Brother Emperor, let me tell you that there is something wrong with your arrangement?"

Zhao Xu also smiled bitterly: "I didn't expect them to be so noisy... I have to thank Shanchang Su and Bachelor Zhaoming for coming this time. Ninth Brother, you really make me proud."

Zhao Bai smiled and said: "Brother Eleven is our pride, I am nothing."

Zhao Xu turned to look at Zhao Ji who was having a lot of trouble with his brothers and sisters: "He is the one who knows how to make trouble the most."

After saying that, he turned around and said solemnly to Zhao Bai: "He has talent, but you have hard work, so you are better."

Zhao Ji and Zhao Ji belong to two extremes in character. Zhao Ji is naturally smart. Legend has it that Zhao Xu was born that night after watching the figure of Empress Li. He can play music, chess, calligraphy, painting, poetry, song, shooting, hunting and entertainment. He can almost do it with just a touch.

Nowadays, it has developed into incense grinding, ink making, sculpture, porcelain making, glass burning and many other miscellaneous art categories.

Together with Zhang Shoujing, the son of the eldest princess of the Chu State, they are both known as the "two masters" of painting in the Song Dynasty clan. The sapphire vase made by Su You for Zhao Xu was based on Zhao Ji's painting of hibiscus and golden pheasants.

He is a first-class outstanding figure among the clan.

Because many art workshops in Bianjing City use the patent of "Eleventh Master", who is also chic and generous, no matter who comes to the door with a request, whether it is the sisters who want a clay doll, or the clan uncle who wants decoration design,

They all respond to requests, and the things they produce are extraordinary.

He is also generous with his money. As long as it is something he likes, money is never a problem. He is the most popular customer among the vendors at Daxiangguo Temple and the boutiques on Wenhua Street.

However, this kid recently spent 3,000 guan to buy a Tang Qin and gave it to the famous prostitute Hua Suiniang. He was impeached by Kong Zhongwu and Zhang Shangying, and was called into the palace by Empress Dowager Xiang and scolded him severely, so he restrained himself a little.

Zhao Bai, on the other hand, has a calm temperament. Although he is blind, he is extremely talented in music and is Lu Ruo's most proud disciple.

In order not to waste Zhao Yi's genius, Lu Ruo specially used fire paint to make a staff score to facilitate Zhao Yi's exploration and learning.

After Su Xiaomei saw it, she imitated this method and worked with Chen Zhaoming to use mathematics and telegraph methods to arrange the hexadecimal three-digit and nine-key braille.

This is actually very similar to the Cantonese Braille rules of later generations. The biggest difference is that because ancient Chinese writing is concise, homophones must also be distinguished.

In order to solve this problem, Chen Zhaoming and Xiaomei spent a lot of thought.

Zhao Bai also joined in. In addition to studying methods together, he also invented the Braille board, the Braille pen, and the writing method of writing backwards and reading forwards.

After mastering it, Zhao Bai began to study hard. Zhao Xu felt sorry for his brother and specially set up a team to translate books for him.

Zhang Kai returned to Beijing to raise the Military Aircraft Department. One day he visited the Polytechnic Institute and discovered this team. He couldn't help but be shocked. Isn't this a good thing created by the Machinery Department?

Zhao Xu secretly sent half of the team to Zhangzi Island, and arranged through channels to enter the residences of compradors in the southern states of Liao to spread Liao intelligence.

Through Braille, Zhao Bai has learned a lot, mainly in liberal arts. He even published his own collection of essays when he was fourteen.

Su Shi admired Zhao Wei's poems very much, and specially wrote a preface to Zhao Wei's collection of essays to promote Zhao Wei's deeds and express his appreciation for his intelligence, studiousness, hard work, overcoming difficulties for knowledge, and his attitude towards learning that others could not do.

He greatly praised him, compared him with the blind Wei Pu who had outstanding achievements in science and engineering, and called on all scholars studying to learn from Zhao Bai's spirit.

After Gao Taotao learned about this, he was moved and excited. He believed that this was a role model for the descendants of the clan, and promoted Zhao Bai from the county king to the king Shen Wang in advance.

Hearing Zhao Xu praise him, Zhao Bai smiled and said: "Brother Huang is so complimentary. I will be surprised when I see the thing that my eleventh brother has tinkered with during the holidays."

Zhao Xu couldn't help but be amused: "I was just talking about his out-of-the-box temperament. Just like you, he was working hard at the Polytechnic during the holidays, but he didn't know what he was tinkering with."

"Eh? Brother Emperor, wait a minute..." Several princes have school buildings, which are small courtyards for taking a nap between studies. Seeing Zhao Xu walking past his small courtyard and still moving forward, Zhao Ji quickly got rid of his younger brothers and sisters.

The entanglement came over: "Here, here, go to my place first."

Zhao Xu then smiled and said: "I thought you were honest during this holiday, so I said a lot of nice things to you at the Queen Mother's place, but it turns out you are still naughty."

Zhao Ji felt that he was wronged: "What I did was really wronged! Brother Huang, you are not a painter and you don't understand that the human body is the most difficult thing to master. I just want to study human body drawing!"

"Hua Suiniang has a good figure. I just want to paint. It's not like the rumors in the capital..."

"You still dare to talk nonsense!" Zhao Xu's face darkened: "Three thousand gu to buy the piano, the beauty smiles, no matter what your purpose is, the fact is the same! You just went out of your way!"

"Yes, yes..." Zhao Ji had no choice but to admit his defeat: "Why don't you just stir up some trouble and make the merit go away from the crime?"

Zhao Xu knew that he couldn't give this younger brother a good face at this time, otherwise he would immediately hit the snake on the stick and said with a poker face: "Let's go, see what you can do."

…

"Come on! Laugh...Brother, please laugh...Forget about eggplant...Follow me: Eggplant, eh, that's it!"

In the small courtyard, Zhao Xu was pushed onto a chair by Zhao Ji and sat upright, making expressions in front of a wooden box.

This is a "camera". To be precise, it is a "photographing machine" because it has the functions of taking pictures and making negatives at the same time.

There is no lens, but a small hole in the front of the wooden box is used, based on the principle of small hole imaging.

There are two round holes on the side of the wooden box, connected to two long black thick velvet covers.

Zhao Ji now reached into the wooden box through the cloth cover and explained the principles to Zhao Xu while tinkering.

"In the wooden box, not far from the small hole, there is a piece of Serulo's 'negative'. Brother Huang is familiar with Liezi's small hole imaging principle. By blocking and opening this small hole, the outside of the box can be made visible.

The scenery is projected onto the film inside the box through light."

"There are two layers above and below the negative film. One is a glass sheet, which uses the difference in refractive index with Cellulo to remove derivative light and avoid affecting the image; the other layer is the silver bromide photosensitive layer discovered by Tianshi."

"Silver bromide turns black when exposed to light. The mountain leader said that is reduced silver."

"So when light shines on the film, the silver is restored to black in the high-light parts, and the low-light parts are not completely restored."

"After the film is exposed to light, the bromide is dissolved in a solution and the reduced silver is retained. The Cellulo film obtained in this way is contrary to reality. The parts that should be brighter turn out to be darker. I call it a 'negative film'.

"

"The solution that dissolves the silver bromide is called a developer, and the solution that fixes the reduced silver is called a fixative."

Zhao Xu couldn't help but be a little surprised by his brother's clever thinking: "That's the truth, but can this thing be seen?"

Zhao Ji said: "I'll do it again with the negative later, wait until I've finished developing it..."

After speaking, he opened the box and took out a small glass plate: "Brother, look, this is a negative."

Zhao Xu followed Zhao Ji's example and pinched the two corners of the small glass plate with two fingers, and found that there was indeed a human figure in the middle: "It's really weird."

Zhao Ji smiled and said, "Next, I have to ask Brother Ninth."

"Why?"

"Because the next operation will be carried out in the darkroom. Brother Ninth is more familiar with it than me. I always knock things over when I go in..."

Only then did Zhao Xu notice that the windows of a room in the small courtyard were sealed, the door was closed, and a carpet was nailed outside the door, preventing any light from entering.

Zhao Bai smiled and said: "Brother Emperor, please give me the negatives."

Zhao Xu put the small glass plate into his hand and helped him to the door.

Zhao Bai opened the door, and Zhao Xu discovered that there was a sandwiched wall inside the room. Shelves were nailed to the wall, and various instruments and porcelain bottles with rubber stoppers for medicinal liquids were placed on them. There was also a similar sealed door in the middle of the wall.

.

Zhao Ji closed the door, Zhao Ji pulled Zhao Xu back to the chair, and said to him: "You only need to illuminate the negative with light. The places where silver is concentrated on the restored surface will have weak light transmittance, and the transparent places will have weak light transmittance."

Just be strong.”

"In this way, the silver bromide can be reduced to black in the areas that should be shadows on the imaging paper, and the silver bromide can still be retained in the areas that should be highlights. After the second development and fixation, the wooden box is small

The scenery photographed by Kong Cai was restored on imaging paper."
Chapter completed!