Page 76
What is going on? Isn't Lord Harov here to clear the name of their school of prophecy?
Why did he suddenly propose to give the other party the Corona Medal... Was there something wrong?
Even Philip found it a little unbelievable. Even if Lin En had drawn a picture of the movement of the stars, he wouldn't be awarded the highest academic award directly, right?
Just give him the Corona Medal? Isn't that a bit too much?
You should know that in these hundreds of years, only three people in the entire wizarding land have received such an honor, and without exception, they are all legendary wizards!
After Harov said this casually, he looked at Lin En, the only young person with brown hair on the field, and asked anxiously, "Tell me quickly, what does the formula on the invitation letter mean... What is M, what is G..."
The moment Lin En saw Harov suddenly break in, he guessed that the other party must have read his letter, so he was not surprised by Harov's sudden question and responded freely.
"The two M in the formula refer to the masses of the two objects, G is the gravitational constant, and r refers to the distance between the two objects."
“To put it simply, it’s the gravitational constant multiplied by the product of the masses of the two objects divided by the square of their distance,” Lynn said simply and clearly.
"Is it that simple?" Harof murmured to himself. He had studied the problem of gravity for several years and looked up a lot of data, but now the other party had summarized it in just one sentence and one formula.
"What's complicated is the deduction process. Many truths are often simple, clear and understandable." Lynn replied casually.
"Well said, the truth should be simple so that everyone can understand it!" Harov nodded in agreement.
"Lord Harof, what is that formula you are talking about? Is it related to gravity?" Raphael, who had been listening for a while, couldn't help but interrupt.
The wizards present were also waiting for Harof's answer. They had vaguely realized that the legendary wizard had said before that he would give Lin En the Corona Medal, and they were afraid that it was not just as simple as the other party's description of the starry sky!
"Yes, I have studied the movement of stars for more than ten years in order to explore the mystery of gravity. I just didn't expect that someone has already given the answer." Harov said with emotion.
It was no secret in Greenriel that Harof was studying gravity, and many people were waiting for the legendary wizard to construct a spell model of force field magic.
This is arguably the most exciting and anticipated thing in recent years.
Once successful, it would be able to greatly reduce the conditions for using this type of magic, and perhaps even develop more powerful space magic, creating another mainstream magic discipline!
But now Harov is asking Lin En questions about gravity. Could it be that a three-ring wizard has a deeper understanding of gravity than the legendary wizard Harov?
A sense of absurdity emerged in everyone's heart.
Harov didn't care about this. After thinking for a while, he asked another key question. "I understand mass and distance, but what is the gravitational constant?"
"Unfortunately, I don't know, Lord Harrof." Lynn shook his head and said bluntly.
If it was data from Earth, he could just say it casually, after all, there was a lot of information in the intelligent computer, but if it was this alien planet, he wouldn't dare to be 100% sure.
He could only calculate the data by weighing a one-kilogram iron ball, and thus infer that the gravitational constant should be very close to that of the earth. However, without rigorous experiments, Lin En was not prepared to speak rashly.
Lynn's answer obviously caught Harrov off guard and also confused all the wizards present.
You even have the formula and you explain it very clearly, but when asked about the data, you know nothing at all. Did you make it all up?
Chapter 142: Lin En: My apprentice can calculate the circumference of a planet using his feet
Seeing that Lynn was speechless under Harroof's questioning, he could only shirk responsibility by saying that he didn't know.
The wizards of the School of Prophecy, who had originally looked ashen, suddenly became alert again. Yolande asked in a questioning tone as if he had found a breakthrough.
"Mr. Lin, if I'm not mistaken, you're not a great wizard yet, so you can't use force field magic, right?"
Yolande's question was extremely fatal, and it immediately made many wizards who supported Lin En discover a serious problem.
Since the other party is not a great wizard and doesn't even know force field magic, how did he figure out the gravity formula?
"The formula of universal gravitation is based on the three laws of stellar motion proposed by the legendary wizard Kepler, and then deduced using Olympiad mathematics." Lin En replied calmly and repeated the three laws.
Last night he used this method to confirm that the law of universal gravitation still applies in this alien world, so he remained calm when facing Yolande's questions.
"Calculate? How?" Another witch from the prophecy school immediately jumped out. "According to you, to calculate gravity, we need to know the so-called gravitational constant, the distance between two stars, and their masses."
"A star is extremely huge, tens of millions of times larger than Mount Kogar, the largest mountain in the wizard land. The distance between them is so far that it is unimaginable. How can we measure it? Do we have to use a ruler to measure it? Or should we put the continent under our feet on a scale and weigh it?"
"If that's the case, then what should be placed on the other side of the scale? Could it be another star?" the witch sneered.
Inside the discussion hall, thousands of wizards were having a heated discussion.
Because the picture of the movement of stars that Linn had shown them before was too perfect, many people were still willing to believe that the gravity formula proposed by Linn was true.
But no matter how hard they thought, they could not think of any way to calculate the weight and distance of these stars.
Raphael looked at Lin En and sighed. He suspected that this formula of universal gravitation might be a purely theoretical theory that had not been verified.
Originally, this was nothing, after all, there were so many purely theoretical doctrines, and this one was not a big deal. However, it happened to attract the attention of Lord Harof, who even took it to the point of awarding him the Order of the Corona.
If this theory is finally proven to be wrong, then the fall will be even more devastating than the praise Lynn had received before.
Yolande and others breathed a sigh of relief. They had reason to believe that the other party's so-called formula of universal gravitation was simply fabricated!
Lin En looked at the few people with a look of pity, as if he was looking at a fool...
"Don't think this process is too difficult, ladies and gentlemen. With some basic knowledge of Olympiad mathematics, even some of my apprentices can calculate the mass of a star and the distance between them."
Lin En spoke in a calm tone, but in the eyes of the wizards of the prophecy school, this was just nonsense. If Lin En said that he had the ability to calculate it himself, they might believe it a little bit, but if they said that even a wizard apprentice could calculate the data of the stars, then it could only be described as outrageous.
Thousands of wizards immediately turned their attention to Johnny, Lydia, Elroc, and Pierce...
I’m not, I don’t have it, I can’t calculate it!
Alok was about to cry now. He had long discovered that Professor Lin might have always had some unrealistic fantasies about their abilities.
In fact, they are not that awesome!
There are such huge stars, how much they weigh, and how far away they are from each other, how can I possibly calculate it!
Lin En continued to speak as if he didn't notice the resentful looks from Alok and the others. "If you want to measure the distance between stars, you need to find a reference in the vast universe first, and the best reference is the planet under our feet! As long as we know its data, everything will be easy!"
Yolande sneered. He wanted to see how the other party would calculate the data of the continent under his feet.
Lin En looked at Alok and the others and suddenly asked, "If I want to know the circumference of a circle, what method should I use?"
"You can multiply the diameter by pi, Professor!" Lydia shouted loudly. She still remembered it very clearly.
"What if we don't know the diameter?" Lynn asked again.
Lydia's little face froze immediately. Alok and Pierce thought hard for a while, and finally Johnny pointed to the sand table on the platform and responded.
"A circle has 360 scales, and each scale is equal, so I can also determine its circumference by measuring the length of each scale segment!"
"Well said, Johnny, you have always done well in Mathematical Olympiad." Lin En laughed and continued, "The planet under our feet happens to be a circle as well. Can't we calculate it using the same method?"
When these words were spoken, the wizards in the hall were stunned for a moment, as if this was the case.
"The planet we are standing on is so huge. How can we judge the angle and distance?" Harof frowned. He once flew to an altitude of tens of thousands meters. With the help of magical vision, he could see slight arcs. It was impossible to divide it into equal scales artificially like the sand table under his feet.
Lin En did not answer directly. He walked to the sand table and asked, "I heard that in mid-July every year, under the sunlight at noon, the shadow of the Corona Tower will overlap with the tower body. Is that true?"
"Not bad!" Raphael nodded.
"Then I believe you haven't forgotten the point where the sun is directly above our head when I introduced the changes of the four seasons. The reason why the Corona Tower has no shadow is because we are at the point where the sun is directly above our head at noon in mid-July!"
"Let's use this as the zero scale!" Lynn walked to the sand table, took a wooden stick, and placed it at the place representing the zero scale in the sand table. Then he placed a second stick a little further away.
"Then we just need to use magic to erect a tall pillar as far away from the Corona Tower as possible, and measure the length of the pillar and its shadow. Then we can calculate the angle of the center of the earth, right?"
"Use the towering pillar as the base point and the sunlight as a ruler... genius, what a genius idea!" Harov said excitedly. In this way, the pillar is like a straight line on the arc, and the shadow is the other side of the right angle. This is a very simple problem of finding the vertex angle of a right triangle!
Raphael and others looked at the two wooden roots placed on the sand table and couldn't help but gasp. How could this be possible?
Chapter 143: Invade the Sekas Empire and overthrow the Church?
"Eluok, it shouldn't be difficult for you to calculate the data of the planet under your feet now, right?" Lin En looked at several wizard apprentices and asked with a smile.
Alok and others nodded excitedly. Only then did they realize that what the professor said in the first class was not bragging. Mathematical Olympiad can really calculate anything!
Once you know the circumference of a planet, it's easy to calculate its radius, area, and even volume.
The wizards at the seminar were also somewhat unable to suppress their excitement. Now there were only ten days left until mid-July...
In other words, ten days later, the continent beneath their feet... no, it should be said that the entire picture of this planet, will be presented before them.
"I really don't know what's going on in your head. You can actually come up with such a strange method!" Raphael said with emotion.
Before Lynn's arrival, although there was no systematic arcane mathematics in the wizarding land, most wizards were still aware of the calculation methods of basic geometric figures. However, they had never thought that they could use such simple calculation methods to calculate the circumference of the planet under their feet.
Maybe this is genius...
Facing the praise from the crowd, Lin En remained very calm. After all, this method was not his own idea. He used the idea of Eratosthenes, the former "Father of Geography", and just made some changes based on the conditions in the Wizarding Land.
When Lin En was looking for historical data in his previous life, he was also amazed at the other party's genius thinking. It was simply using basic methods to solve the most complicated problems!
"Are there any requirements for the place where this pillar is placed?" Harov was already impatient to verify this conjecture. If it weren't for the fact that there were still ten days left until mid-July, he would have wanted to take action right now.
"The ground should be as flat as possible, at least 500 kilometers away from Greenridge. For more accurate data, it's better to be more than 1,000 kilometers away!" Lin En said thoughtfully. "After all, the continent under our feet is too big. One scale may be tens or hundreds of kilometers. It's better to be as far away as possible. The pillars should also be as high as possible so that the shadow is clear enough."
So far... Harov's brows couldn't help but frown.
In this case, it may be impossible to verify it in the wizard land.
"There is a very suitable place. I heard that there is a tower hundreds of meters high outside the Sea of Mist. This is a ready-made pillar." August suddenly suggested.
The wizards present were all a little surprised and wondered where August was talking about.
Philip, who was standing by, suddenly seemed to have thought of something, and said in surprise, "Master August, are you talking about the Sky Tower in the Holy City?"
Although he had never been to the Sekas Empire, he had heard from Herram and the sailors who traveled back and forth between the two places about some novel things beyond the Sea of Mist, including this Sky Tower.
It is rumored that it is the place where the creator of life, the lord of stars, and the goddess of the moon [Ella] appeared. It is a holy place in the hearts of all believers.
Philip naturally scoffed at this so-called god, but he was also clear about the power of the Holy See. If they went to the Holy City specifically to measure the length of the shadow of the Sky Tower, it would be a death sentence. They would not even be able to enter the gate and would be caught and burned to death.
However, there were not many people as rational as Philip. Many young wizards even clamored to attack the Holy City directly.
In their opinion, the wizarding land today is no longer the refuge for exiled wizards.
After hundreds of years of development, they have created countless new magics, established a wizard promotion system and a magic theory system, which is powerful beyond imagination!
The starry sky scene that Lin En told them made the wizards realize that the world was so big, but they were trapped in this small wizard land...
But Harov quickly poured cold water on him, saying, "We only have ten days. Even if we set out now, we may not be able to reach the Sky Tower at the fastest speed."
"And there's no need to make it so complicated. We can just use magic to create a floating ice island on the sea and erect an icicle on it. This way, the calculated data will be most accurate!"