Night fell slowly, but the scene was filled with stunned expressions. Even Liu Xinyu couldn't care less about the Queen's majesty. She opened her mouth wide in surprise and rounded her eyes, looking at the 'globe' in front of her.
Today, everyone finally has the concept of ‘planet’!
It has been more than three hours since the sea trial ended, and Zhao Dahe was talking about his huge discovery.
Using the projection length of the wooden stick at noon measured by the Red Lotus Sect in Taotu Continent, combined with the projection length of the wooden stick at noon in Qixia Kingdom, plus some knowledge passed down by Zhao Dahe himself, etc., Zhao Dahe used the Zhang family's projection length
Using brand-new mathematical knowledge calculations, and after repeated proofreading, Zhao Dahe calculated the diameter of the earth for the second time:
The diameter calculated by Zhao Dahe at one time was 126,000 kilometers;
This time Zhao Dahe calculated the diameter to be 128,700 kilometers.
Once, Zhao Dahe calculated a lot of divisors based on the records and data of the sect, as well as the Zhoutian star chart, plus the Zhang family's mathematics, etc. This time, he used the Zhang family's mathematics, wooden stick projection, etc. to make new calculations.
Corrected some divisors and errors, resulting in a more accurate number.
The diameter of the earth is 128,700 kilometers, and we live on a star! The area displayed by the earth is only about one-tenth of the surface area of the star!
There are still nine tenths of the world, which is an unknown world!
Zhao Dahe's calculations were very complicated, and many of them were even helped by Huang Mingshan and others. Huang Mingshan and others have grown into scientific staff and pillars of the Zhang family.
Looking at the three-foot-long gastrodia paper roll and the dense calculations and proofs, everyone felt a little dreamlike.
And this time Zhang Shengye did not refute, because compared to Zhang Hao's "random talk" at the beginning, Zhao Dahe proved his conclusion with mathematical methods and various evidences!
Precise numbers make all other languages pale.
The earth under our feet is a star, and we ourselves are people living in the stars! After discussion, Zhao Dahe and Zhang Hao named the planet under our feet: Tianyuan.
The so-called Tianyuan, the beginning of heaven and earth, is the heart of heaven. In ancient legends, there are 366 stars in the sky (Zhang Hao looked at the stars in the sky and didn’t know how to count these 366 stars), but what everyone has observed so far is
365 stars. One star disappeared.
For a long time, everyone has had many speculations about this missing star. One of them is that there is another "original" star that has not been found. Everyone named this star 'Tianyuan'.
But over the years, many astrologers and even many practicing masters who studied "Zhou Tian Gong" have been looking for this 'Tian Yuan Star'. The result... turned out to be under their own feet!
Such a result made countless people at the scene think in knots. It was really too dramatic.
Then Zhao Dahe carefully adjusted the direction of the "globe" he had just made, which should be said as the "Tian Yuan Yi", so that the "terrestrial image" of the Tian Yuan Yi tilted up. The east was tilted and the west was sinking.
However, for now, Zhao Dahe has no concept of longitude and latitude, the Arctic Circle, the equator, etc. He just makes adjustments based on some of the information he knows.
But this adjustment is very similar to what Zhang Hao made before.
Zhao Dahe adjusted for a while, then took a few steps back to take a look, and then said to everyone: "Everyone, this should be the approximate location of the map that covers the ground."
Liu Xinyu finally let out a slow breath and spoke: "I have a question, why are we in the north and not in the south? Since we live on the same 'planet', why can't we be in the south?"
Zhang Hao smiled: "It's very simple, because we discovered this secret, so we stipulated that our place is the northern hemisphere!"
Can it still be like this... Liu Xinyu blinked in a daze for a moment, and finally had to nod in agreement. Yes, we discovered it, of course we are in the northern hemisphere. Traditionally, it is believed that the north is the most valuable direction;
East-west direction, east is respected.
But Liu Xinyu still has questions, "Since we live on the same planet, why don't we enter the outside world? What is between each star? How far away is it? Can we reach other stars?"
Zhang Hao looked at the Queen dumbfounded: Are you thinking of expedition to other planets now? You are a bit ambitious! Well, ambition is a good thing, but it is always as strong as the goal. Having said that, practitioners have a long life span, maybe Liu Xinyu really conquered the starry sky
day.
However, for Liu Xinyu's current question, Zhang Hao was unable to answer the question of gravity or anything like that. It would be a bit shocking to say it now, and it would also expose himself.
The discovery of gravity represents the beginning of mankind's transformation and control of nature. Why water flows downwards, why people stand on the ground instead of floating into the sky, the movement of the sun, moon and stars, and many other secrets, all require the concept of "gravity"
Take the key.
But if you want to explain universal gravitation and prove it using mathematical methods, you need a genius. Unfortunately, Master Zhang remembers a lot of things, but there are also many things that he cannot remember. He knows universal gravitation, but how to prove it... Sorry, I don’t know.
!
In fact, using mathematical methods to prove universal gravitation is a very complicated calculation, and it requires complex experimental data, etc. The most important thing is that it requires sufficient scientific accumulation.
Zhang Hao will promote the development of science and industry, but will not encourage it casually.
Before universal gravitation, an important scientific foundation is needed: Kepler's theorem, which also uses mathematical methods to calculate planetary orbits, etc.
Yes, gravity needs to be calculated from a large perspective, and it requires looking for traces from the sky and a large number of observations. It is difficult to obtain sufficient data by relying solely on observations inside the planet.
So when faced with Liu Xinyu's question, Zhang Hao could only shake his head.
Not to mention Zhang Hao shaking his head, even Zhao Dahe now could only shake his head.
As the two shook their heads, the atmosphere became silent again. After a while, Liu Xinyu smiled faintly: "Forget it, I don't understand, I don't understand, life goes on anyway.
Zhang Hao, what happened today is an eye-opener for me, but to be honest, I still have some doubts."
"Your Majesty, don't say you are confused, I am confused too. But I believe in the data in front of me more. Our eyes and senses can sometimes deceive us, but data that has been accurately measured and calculated will not deceive us."
Liu Xinyu nodded slowly, "It just so happens that we were still discussing the issue of the reign name during the Chinese New Year. Let's use 'Tian Yuan' as the new reign name in the future. I think we have the qualifications!"
This year is the first year of Tianyuan, and our calendar will continue to carry the name of Tianyuan forever!"
You also want to be the queen forever. Zhang Hao felt a little playful in his heart. He had just begun to have a vague understanding of the world. The ambition of the queen has expanded to this extent.
Everyone gradually dispersed, but Zhang Hao did not ask for confidentiality. Because it was not necessary, and the future development of Qixia Country also needed this kind of geographical knowledge to pave the way.
Even if other countries knew about it, it would be of no use. Without steel battleships, they cannot explore this world! This is a world of spiritual cultivation, and the sea is full of monsters. Not to mention ordinary wooden ships, even black iron battleships of insufficient quality may not be able to cross it.
open sea.
Because there was no need to keep it secret, the news spread throughout the Qixia Kingdom in just a few days. Especially the fact that the Queen officially used "Tian Yuan" to commemorate the year, it caused a huge response.
The legendary Tianyuan Star has been found, and it is actually under our feet. Just this news is enough to shock the world of cultivation!
After searching for the stars for tens of thousands of years without finding them, it turned out to be a true search for stars on the back of a donkey.
But then it caused even more shock. We actually live in a star? Or rather, we actually live in a planet?
The earth is actually spherical? Is it true? Then why didn't we fall? What is outside the planet? Are the stars in the sky all planets? Is the earth under our feet really 128,700 kilometers in diameter?
The news spread at an indescribable speed throughout the West of the Fertile Continent, and then spread rapidly. The other countries were unable to block the communication between the Nascent Soul Stage, let alone the communication between the Transformation Stage.
However, the 'round earth theory' has spread, but the relevant mathematical calculations, etc., are confidential. The results can be made public, but the process must be kept confidential!
The best evidence to prove the theory of a round earth is a lighthouse!
The light of the lighthouse is bright and shines directly into the sky, especially in this world where the atmosphere is thick and there are many layers of white clouds in the sky. After these white clouds are illuminated by the light of the lighthouse, they become an invisible symbol that verifies the theory of a round earth.
In clearer weather, when observed from dozens of miles away, the clouds are almost close to the surface; and as one gets closer, the clouds get higher and higher.
There is also the highest peak in Qixia Country. Yuyang Mountain was once the residence of Jiuyang Sect. From a distance, you can see the top of the mountain first. The morning and evening sunlight will also stop on the top of the mountain.
There were many explanations for the sunshine in Yuyang Mountain in the past, but today’s explanation is the most convincing. However, the response was too great.
But it also triggered more discussions about why we didn’t fall? What power is restraining us? Could it be... is this the legendary power of the stars?
And here comes a more serious question: Since we are in the stars, where is the legendary fairyland? And where is hell?
The discussion intensified, and the Zhang family took the opportunity to push Zhao Dahe to the front desk and use this to attract many people's attention.
This time, Zhang Hao did not use the name of Dayang Group, but the name of ‘Zhang Family’. Knowledge must be in your own hands!
In such an atmosphere, the Zhang family finally made an important decision: to build a school. A school to teach various scientific knowledge such as cultivation, alchemy, industry, commerce, geography, etc., and to recruit students from the country of Qixia.
And the Zhang family promises: free education!
School name: Beidou Academy.
For a time, the country of Qixia became even more lively.
(People often say that they send me razor blades. They are so enthusiastic that I am so moved that I couldn’t sleep most of the night.)