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Text Chapter 12 (24) Small Hole Imaging

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    Gu Shi finished his lunch at home and took a nap for more than half an hour. He waited until the sun quietly set to the west before going out unhurriedly.

    After crossing the Qujia River, Kankan approached the merchant village. He took his daughter off the road and followed the ridges in the fields around the village in a small circle to avoid the noisy flowing water feast in front of the merchant gate.  , entered the house directly through the backyard door.  After asking a few random people, he handed over the several land deeds he brought as gifts to Xiaochan and asked her to go find Yue'er, Erya and the others.  Xiaochan knew that her father wanted to talk to Shang Cheng about something important, so she sensibly left first.

    When Gu Shi arrived at the back garden, he heard that the news had been agreed, and he, Jiang Tuan and Yang Heng were already waiting for him at the corner gate.

    Shang Cheng let him sit down in the thatched pavilion, poured him a cup of tea soup, put it in front of him, and said with a smile: "Why are you here too? I heard in the morning that you sent someone to deliver a gift, and I thought  , you won¡¯t come.¡±

    Gu Shi responded absently.  When he walked into the pavilion, his first sight fell on the large black lacquered and gold-painted wooden plate in the middle of the stone table.  The wooden tray is covered with a thick layer of purple-yellow Zhang velvet; on top of the velvet, there are more than a dozen large and small utensils and objects made of water-colored glaze.  These water-glazed glazes are obviously made by skilled craftsmen. Some are shaped like flying birds, some are shaped like dancing animals, and two are clearly paperweights and pen holders; among these objects  , there are also a few glass beads scattered around, as lustrous and round as pearls. All these objects are crystal clear and perfectly created by nature.  As the person's body tilts up and his eyes wander, a ray of brilliant colorful light will burst out from the utensils from time to time, but it will appear and disappear suddenly, making it difficult to figure out

    Gu Shi stared at the objects and utensils without blinking.  After a while, he raised his head and asked, "Are these all glass?"

    "Yes, these are all made of glass." Shang Cheng said.  He turned his head and glanced at Yang Heng, and added, "It is now called 'Glassware'. This is the name given today."

    Yang Heng said with a smile: "The Ministry of Industry recently presented sixteen boxes of glassware to today. The emperor was so pleased that he immediately wrote "Glassware" and praised it, "Lefen Bingxin exists in the sky, and the music is so ingenious that it cannot be found in the world."

    Gu Shi smacked his tongue, shook his head, and kept saying "tsk, tsk," in his mouth.  It is an incredible honor for the emperor to name it himself!  He had to lament that the glass from the Ministry of Industry came at the right time.  Just looking at the glassware in front of me, I knew that Zhang Pu would definitely win this battle in the court!  Those officials who took the lead in impeaching the Ministry of Works and Chang Xiu, one by one, can't escape the charge of "unwarranted frame-up and slander of colleagues". What awaits them is either to be demoted and retained or demoted to the foreign affairs committee; those who swarm in are also  Nothing good can be gained, even if the law does not punish the public, and there is no big loss in sight, but if you want to avoid being settled by others, you can only lie down and admit your mistakes; and Han Yi, the deputy minister of the Ministry of Civil Affairs, has always been  They are all secretly competing with Zhang Pu for the position of left prime minister. When the officials impeached the Ministry of Industry, he also said some words to fuel the flames. Now, he no longer hopes for the position of left prime minister, and the possibility of becoming right prime minister is also very slim.  Whether Shangshu can continue to do so is a matter of two minds - maybe he will soon be promoted to a bachelor of Wenyingdian

    He suddenly asked Yang Heng: "Gongdu," he had always been polite to Yang Heng, and always called Yang Heng by his nickname. On the one hand, this was because of Yang Heng's background as the second place in the competition in the seventh year of Dongyuan Dynasty, and on the other hand,  Because Yang Heng has a good daughter.  He asked, "Let's make it one by one, why can't Chang Wenshi come by himself?"

    Yang Heng hesitated for a moment.

    "Chang Wenshi has many things to do and doesn't have time to come." Shang Cheng explained to Gu Shi on his behalf.

    "How busy can he be?" Gu Shi said with some disdain.  He felt a little unfair for Shang Cheng, and at the same time he felt unworthy of Shang Cheng.  How much did Glass help the Ministry of Industry and Chang Xiu, and how much did it help Zhang Pu and Zhu Xuan?  Zhang Pu dealt with his enemies and secured his position as left prime minister, Zhu Xuan opened the way to track down the hidden households, the Ministry of Industry and Chang Xiu achieved both political and performance achievements, and only Shang Cheng got nothing and was also arrested.  Being involved in this court dispute carries a lot of shame.  Now that the matter has come to an end, the imperial struggle has also emerged, and Zhang Pu and Zhu Xuan have not come forward, Chang Xiu should come to visit, right?  Alas, Kui Shangcheng still treats Chang Xiu as a good friend; look how others treat him!

    Shang Cheng pointed to a blue-covered mailbox on the stone table and said: "He is sick, from exhaustion. He is still in Xuzhou now, and I only asked Mr. Yang Heng to send me a letter."  ." He looked at the letter with a wry smile on his face.

    "What's wrong?" Gu Shi asked sensitively, "Is Chang Wenshi seriously ill?"

    Shang Cheng forced a smile and looked at Chang Xiu's letter without saying a word.

    Gu Shi couldn¡¯t get an answer from him, so he turned his attention to Yang Heng.

    Yang Heng would not dare to offend Poyang Marquis no matter what.  At the same time, he felt that Chang Xiu ordered him toThis matter is not a big deal. At most, like glass, it requires some time and money from the Ministry of Works.  But time is nothing, and money and food are nothing. With these glassware, the Ministry of Industry and Commerce will have the confidence to throw down the money no matter how much it has!  He glanced at Shang Cheng secretly and saw that Shang Cheng had no intention of stopping him from speaking, so he explained to Gu Shi: "When Uncle Ying proposed to the Ministry of Industry to make glass, in addition to glass, there was another thing called  It's called 'astronomical telescope'. This is also the original intention of Ying Bo's initiative to make glass. But to build an astronomical telescope, you must first have glass. Now that the glass is ready, the astronomical telescope cannot be delayed. I came back this time and was also affected by Zhai.  Your Majesty and Mr. Chang¡¯s personal instructions, in addition to thanking Uncle Ying in person, also want to ask Uncle Ying for advice on various matters that need to be paid attention to when making the so-called ¡®astronomical telescope¡¯.¡±

    Gu Shi turned his head to Shang Cheng again.  He was relatively clear about the ins and outs of the glass matter, because Zhenxiang was not optimistic about this thing, so the Ministry of War resolutely refused to spend this wasted money at that time; but he had not heard a single thing about the "astronomical telescope".  Astronomical telescope, what kind of thing is this?  Is it a type of bronze mirror?  Suddenly, an idea came to his mind: Since glass can be made by throwing money, can astronomical telescopes be made by throwing money?  Since the Ministry of Industry can spend money on glass, then he can also find people to spend money on astronomical telescopes!

    Shang Cheng spread his hands and said helplessly: "I don't know how to do it. I only know that to make a telescope, you must have a concave mirror and a convex mirror." He dipped some tea soup and drew a picture on the stone table.  The appearance of a convex lens and a concave lens, and then adding two straight lines to put the two lenses together, said, "You can ask jewelry craftsmen to make these two things. They should know how to grind them. But these two things  When placed in a hollow pillar, there are specific requirements for their front-to-back distance. What is this distance and how to determine this distance? I don¡¯t know the reason." He said to Yang Heng, "  I think maybe Mr. Tian Xiutian can remember something. It seems that this principle has been recorded in the book." He raised his head and tried to remember for a long time before he said uncertainly, "This principle is called 'small holes'.  Imaging - that seems to be the name." He drew a basic diagram of a small hole imaging on the stone table.

    Yang Heng stared at the scrawled schematic diagram for a long time, and suddenly said: "Is it the description in the "Mo Jing": "Scenery. People with light are as warm as shooting, and those who are below are also high; those who are high are also below.  . The foot blocks the light below, so the scenery is above; the head blocks the light above, so the scenery is below. There are ends in the distance and near, and they are in line with the light, so the scenery is inside the library'?"

    Shang Cheng suddenly felt dizzy after listening to him reciting large sections of ancient pre-Qin texts. He quickly said: "It's almost the same. I can't remember it. You go back and discuss it with Mr. Tian to see what this passage actually says."  Is it 'small hole imaging'? Then, slowly try to adjust the distance between the convex mirror and the concave mirror. You can always make an astronomical telescope one by one!"

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