I am the king of the dead

Guo Shoujing has actually determined that the earth is a ball through calculations, and Ulugh Beg made up the tilt angle to add more evidence that the earth is a ball.

In this way, it is not a problem for Li Binyan to go to the horizon to see if he can come back.

The sextant is a powerful tool for navigation. How to determine your position on the sea can be solved by using the sextant.

The altitude angle of the sun at noon, the latitude of the direct sun point, and the latitude of the observer, these three quantities, as long as any two of them are known, the third one can be calculated.

It's even more convenient if you're measuring Polaris.

The altitude angle of Polaris can be directly regarded as the local latitude without even checking the astronomical calendar.

After determining the latitude, how to determine the longitude at sea?

It's very simple, you can determine your own longitude with an accurate timekeeping watch at the starting point.

Every twelve hours is a day, the earth rotates for one cycle, every hour rotates 30°, and every moment is 3.75°.

Then, you only need to know the time difference between the two places to know the longitude difference between the two places.

How to determine the time difference?

When the sun is in the middle, just look at the time.

This calculation method was already very proficient in the Yuan Dynasty. For example, Yelu Chucai said in "Gengwu Yuanli": "Take Xunsi Gancheng as the standard, and put it in the field. Take four thousand three hundred and fifty nine times, and abdicate , Ten thousand is divided, said Li difference, add to the east, subtract from the west."

Thinking about Gancheng is Samarkand.

This is also an important basis for Guo Shoujing to say that the earth is a ball.

Calculating latitude and longitude is not difficult, but the difficulty lies in determining that the earth is a ball and its inclination angle.

Zhu Qiyu confirmed once again that Ulugh Beg is a good person.

Accurate timing is not difficult for Daming, Zhu Qiyu has a precise timing watch on his desk.

The hydraulic clocks of He Qing Hai Yan, Shi He Sui Feng once aroused Zhu Jianshen's curiosity (Chapter 320).

This hydraulic clock was not Zhu Qiyu's handwriting either. In fact, the first astronomical clock in the Central Plains Dynasty was a water transport instrument platform in the Northern Song Dynasty.

The invention of the anchor escapement made the accurate timing of the Central Plains Dynasty no longer difficult.This anchor escapement was named in the Song Dynasty: Tianheng.

During the shame of Jingkang, the water transport instrument platform was brought to Sitiantai in Youzhou by the Jin people, and was later discarded by the Jin people. The Jin people did not understand the meaning of this precise timekeeping.

The water transport observatory made by Su Song has blueprints. Su Song’s sixth son, Su, carried the blueprints. In the Southern Song Dynasty, he was still unable to imitate the observatory.

Guo Shenxian Guo Shoujing, although he did not succeed in re-engraving the water astronomical platform, but he is quite clear about the significance of the anchor escapement and precise timing, and made a [Daming Lantern Leaker] for precise timing.

Through the gear train and a rather complicated cam mechanism, the puppet is driven to realize the automatic timekeeping of "one-quarter bell, two-quarter drum, three-stroke, four-stroke".

The water clock on Zhu Qiyu's desk did not appear on his desk out of thin air.

The tilt of the earth's axis can also explain an unresolved question since ancient times, why there are springs, summers, autumns and winters.

Zhu Qiyu was very satisfied with the documents sent by Wang Fu. It is not difficult to translate these documents, just hand them over to Wu Jing and Qin Tianjian Xu Dun.

"Can this ten-foot-high sextant be made?" Zhu Qiyu looked at the blueprint and asked with some doubts. It took Ulugh Beg several years of work to make it.

Xing'an felt humiliated. A barbarian from the small country of Quer made a very delicate instrument. Xing'an also admitted that this person was amazing, but why did His Majesty think that Ming could not make something that barbarians could make?

"Yes." Xing'an took the blueprint and said, "I have someone to supervise it."

Xing'an didn't talk nonsense, he left Juxian Pavilion with the blueprint, turned around and walked into the Supervisor of Rituals, His Majesty worked in the lecture hall every day, and the supervisor of rituals also moved to the lecture hall in June of the first year of Jingtai.

Xing'an was the eunuch who was in charge of ceremonies, and he called a eunuch who was in charge of ceremonies, Bingbi, and handed over the blueprint in his hand to eunuch Bingbi, saying, "Your Majesty asked Daming if he could make such objects."

"Take the drawings and go to the Ministry of Industry and Qin Tianjian to ask how long it will take to build this ten-foot-high sextant."

Eunuch Bingbi thought for a while and asked, "When will Your Majesty want it?"

"The sooner the better." Xing'an said with certainty.

In the early morning of the third day, after Zhu Qiyu got up and prepared to inspect the Beijing camp, Xing'an hurriedly said: "Your Majesty, the sextant that is ten feet high has been built."

Zhu Qiyu was about to go to the martial arts hall to take a class. When he heard that it had been built, he blinked and said, "Is it so fast?"

"It's already very slow." Xing'an bowed his head and said.

Ulugh Beg lost his throne because of this sextant. His son opposed Ulugh Beg's rule. The first thing he did was to arouse religious conservative forces' opposition to Ulugh Beg's heresy.

It took Ulugh Beg more than ten years of hard work to build this sextant, but it took Ming three days to build it?

Daming speed.

The Ming emperor was extremely powerful.

After Zhu Qiyu became a supervisor of the country, the first thing many ministers did was to throw Yang Zen Master, who was appointed as the national teacher during the orthodox period, to the north to reform the Wala people.

Zhu Qiyu said casually that Ulug Beg had spent most of his life working hard, but it took Daming three days to finish it.

"Go and have a look." Zhu Qiyu walked towards the observatory of Dongcheng Gongyuan.

Qin Tianjian Xu Dun's court clothes waited in front of the door. This was one of the few opportunities for Qin Tianjian to show his face in front of His Majesty, and Xu Dun had to seize it.

Xu Dun took sixty astronomy students and waited respectfully in front of the door. After seeing Tiqi clearing the way, he immediately saluted respectfully.

The previous supervisor, Peng Deqing, was frightened to death, but he was dragged to the execution platform and had his head chopped off.

Xu Dun was extremely respectful.

"Let's get down." Zhu Qiyu got off his horse, signaled Xu Dun and all Tian Wen to get down, and walked into the observatory.

Zhu Qiyu saw the sextant about ten feet high, which was exactly the same as the drawing, and there was an extra black glass shading film to prevent the eyes from being hurt when observing the position of the sun.

Xu Dun carefully reported their progress. The reason why it took three days was mainly to calculate the differences between Samarkand and Jingshi astronomy.

The construction of the sextant does not mean that it has been built, just to fool the emperor. They have to conduct a comprehensive re-examination of Ulugh Beg's astronomical achievements, and only dare to report it if they are sure it is true.

That's why it took three days.

"That is to say, Ulugh Beg's precession and the inclination of the earth's axis are correct?" Zhu Qiyu asked with the memorial of Qin Tianjian Xu Dun.

Xu Dun said quite excitedly: "Yes, Your Majesty!"

"Although it's hard to imagine, there is indeed a ball under our feet! And the axis of the earth is still crooked."

"When Governor Li was at the Shipping Department of Mizhou City, he said that when the weather was fine, the ships coming from afar saw the mast first, and then the hull. Governor Li guessed that the ground had a curvature."

"We verified this statement, and it solved a lot of our doubts!"

Xu Dun was quite excited, but His Majesty seemed to have a ball at his feet, which was not very surprising.

"Oh, that's really surprising." Zhu Qiyu put those memorials away, handed them to Xing'an and said, "Send them to the martial arts hall, I'll look back later."

Xu Dun could feel His Majesty's indifference. His Majesty's question was whether Ulugh Beg's calculations were correct, not whether the Earth's axis existed.

This made Xu Dun very confused. His Majesty accepted this new idea, the speed is really too fast. He prepared a lot of arguments to convince His Majesty that the earth is really a ball. This conclusive proof made him excited several times sky!

But all the preparations were in vain, because His Majesty seemed to have known early on that the ground under his feet was a ball.

Xu Dun hurriedly bowed his head and said, "Your Majesty, I dare to presume, I have to go outside Tai'an Palace, Tai'an Palace, and wait until noon to confirm the time."

Xu Dun was a little speechless, his face flushed red, he didn't know how to express his meaning accurately, he said loudly: "Your Majesty, although I don't understand, but this is really important, it involves many things, even the world communication Compilation of the will."

However, it is etiquette to determine the time again at noon in Tai'an Palace.

Xu Dun continued: "Your Majesty, please use the time of Tai'an Palace as the standard to determine the difference in the world. It will be inconvenient and complicated to record with local time. Over time, mistakes will occur, my lord..."

After listening for a long time, Zhu Qiyu finally understood Xu Dun's meaning, nodded and said, "You mean standard time?"

Xu Dun nodded hurriedly and said, "Yes! Yes! Yes! Standard time."

"It should be righteous." Zhu Qiyu nodded and said: "When the weather is fine, go to Tai'an Palace to measure it, and if you are sure, you can determine the latitude and longitude of the world."

This is within the scope of measuring Douhu, and it is also an etiquette.

The Ming Dynasty centered on the emperor, so naturally wherever the emperor lived, that would prevail.

Zhu Qiyu stood up and said: "I hope that Chen Xun has compiled the Tongzhi of the Universe, and it is not the vague map of the past."

Spherical geometry is another achievement of Ulugh Beg. If Ulugh Beg is given some more time, he may be able to check and calculate more things.

For example, how far is one degree of longitude on the ground.

This is not a problem in Ming Dynasty, which has a vast territory. Once the emperor believed that the earth was a sphere, it was not difficult to determine the same latitude, and it was not difficult to determine the distance of one degree of longitude.

This is of great help in drawing maps.

Zhu Qiyu stood up and was about to leave, when he suddenly asked, "Is there any result that I can send to Li Binyan, Belin and the others, by the way, how much did this sextant cost?"

"It's less than 200 taels of silver." Xu Dun bowed his head and said hastily.

Zhu Qiyu nodded nonchalantly and said, "Oh, it's not expensive, so let's call him Ulugh Beg Sextant, and remember this good man Ulugh Beg."

Xu Dun bowed his head and took the order.

Zhu Qiyu patted his horse and left Qin Tianjian, heading towards the lecture hall.

When he arrived at Juxian Pavilion, he saw Wang Zhi waiting in Juxian Pavilion.

"See Your Majesty, is Your Majesty blessed?" Wang Zhi bowed his head and saluted.

Zhu Qiyu said with a smile: "An, sit down."

When Hu Wei went up to the second floor of Juxian Pavilion last time, he paused at the corner of the stairs. After Xing'an said this, Zhu Qiyu moved the imperial study room and many meeting rooms to the first floor.

"Wang Shangshu, Feng Xianyan is indeed still impeaching. If Wang Shangshu feels powerless and wants to become an official, I can allow it." Zhu Qiyu said quite solemnly.

He actually underestimated the firepower of Fengxian Yanguan a little bit. Wang Zhi was put on the fire grill, and the outside was charred and the inside was tender.

"Left and right are just a few gossips, but it's fine, Your Majesty, I'm just talking about ten thousand words." Wang Zhi didn't care about impeachment.

Just play it, without losing the meat.

"Are you talking about a salary increase?" Zhu Qiyu nodded and said.

Chapter 432 The salary increase is to catch corruption with confidence

The first longitude line in the world will pass through the Tai'an Palace, which is the unanimous decision of the Qin Tianjian and the Ministry of Industry.

After all, even the royal palaces of the Ryukyu Kingdom are built facing the imperial palace, and the 0° meridian does not even refer to the Fengtian Hall of the imperial palace, but to Tai'an Hall, Zhu Qiyu's bedroom.

This is the submissive heart of the Ministry of Industry and Qin Tianjian, and it is also the etiquette of Ming Dynasty.

Zhu Qiyu agreed with this very much.

Similarly, Wang Zhi, Minister of the Ministry of Officials, asked for an increase in the salary of the Ming Dynasty, which is also the obedience of the Ministry of Officials.

Wang Zhi bowed his head and said: "Your Majesty, if the salary is not enough, corruption will surely breed."

This is Wang Zhi's exploration of the Ming Dynasty's official administration in Wan Yanshu.

In the fourth year of Hongwu, the 13th year of Hongwu, and the 20th year of Hongwu, the Ming Dynasty fixed the salary three times, and the salary was higher each time.

It is said that Zhu Yuanzhang is indifferent and ungrateful, so why is the salary higher than the last three times?

In particular, Hongwu's last fixed salary in 20 years was implemented until the 16th year of Chongzhen.

In the 17th year of Chongzhen, Daming had only his last breath left, and he could no longer issue grain notes.

During the Hongwu period, the distribution of salaries was mainly based on rice and beams in kind.

During the Yongle period, objects were also the main items, because the Armada of the Ming Dynasty went south to the West and brought back a large number of things such as spices and gems. These spices were the main items that were discounted at that time.

In the Xuande and Zhengtong years, banknotes began to be folded.

This practice of folding banknotes continued until the end of the Ming Dynasty. When the Ministry of Households issued salaries, even the capital officials did not pick up the banknotes of the Ming Dynasty that were considered assy ass paper.

For 250 years, the officials of Ming Dynasty did not have a salary increase.

During the Hongwu period, the gentry above Juren were only exempted from hard labor.

But in the 24th year of Jiajing, Mantian first appeared.

Ming gentry, Juren, Jinshi, officials exempted from land and mu Zhengfu, and Ding service were officially customized.

In the 38th year of Wanli, in the "New Regulations for You and Mian", first-rank officials were exempted from 350 mu of land, Jinshi was exempted from [-] mu of land, juren was exempted from [-] mu of land, and students were exempted from [-] mu of land.

"But a high salary can't keep you honest." Zhu Qiyu emphasized again.

Can high salary support honesty?History has also proved that it is not possible.

If it is said that the three fixed salaries during the Hongwu period were extremely high and controversial, then during the Yongzheng period, the high salary was the highest since the Central Plains Dynasty in 2000.

The county magistrate of Changzhou County, Suzhou Prefecture, had an annual salary of up to 1000 taels of snowflake silver during the Yongzheng period.

Converted based on the price of Suzhou rice, the county magistrate's salary in the Ming Dynasty was as high as 900 taels.