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...
In fact, they are not that awesome! How could they possibly calculate how heavy and far away the stars are?
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 should not have forgotten the point of direct sunlight that I mentioned 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 of direct sunlight 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?"
"Using the towering pillar as the base point and 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 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 take a breath of cold air. It can actually be like this?
(End of this chapter)