If Lin En's previous remarks were undermining the foundation of the magic world, then now he is trying to knock down the entire magic building with one foot!
"Mr. Lin, this is not the time to joke!" Raphael looked at Lin with a serious expression. "Don't the free fall law and the theory of stellar orbits you proposed earlier prove the influence of gravity?"
Raphael really didn't understand why the other party suddenly said such a violent statement. Isn't this just slapping himself in the face? There were many people who had the same idea as Raphael. Some even thought that Lin En might be crazy, or deliberately said some weird things to attract their attention.
Amidst the doubts, Lin En spoke again. "In my opinion, the so-called gravity is essentially a phenomenon of space-time curvature!"
The current mainstream theory in the wizarding land is that gravity affects and distorts space, but Lin En reversed the cause and effect. It is because of the change in space that the gravity phenomenon is caused! So someone immediately stood up and questioned. "If it is not the effect of gravity, then what kind of force caused the space to deform?"
"Of course it's mass!" Lin En said firmly. "The reason why we feel the influence of gravity or gravitational force is because the huge mass of the planet under our feet distorts time and space, forcing us to fall towards the center of the earth..."
Harrov and a few great wizards who specialized in force field magic had thoughtful expressions on their faces.
And those formal wizards felt that their brain power was not enough. Every word of Lin En was constantly challenging the limits of their imagination and thinking ability! Gravity does not actually exist, or it is just a phenomenon. In fact, space is pulling them in a certain direction.
This invisible and intangible change in space is difficult for many wizards to understand, especially they cannot imagine how the distortion of space can achieve this.
Lin En did not give a long explanation, but moved sideways. On the platform behind him was a round piece of cloth made of feathered serpent skin and had very good elasticity.
It was placed on an iron frame and was tightened tightly.
Everyone present looked over curiously, and Lin En picked up a ten-kilogram ball and placed it in the center of the round cloth.
The next moment, the originally flat round cloth suddenly sank, forming a curved surface with the sphere as the center. The degree of curvature became weaker as it went outward.
"As for the so-called gravity, it's like this!"
Lynn took out a one-kilogram ball from his pocket, casually pressed it on a corner of the curved surface, and then let go.
Everyone in the seminar stared with their eyes wide open. The wizards in the back row stood up, and some even used farsighted magic to see more clearly.
Without Lynn applying any additional force, the ball automatically rolled towards the center along the curvature of the surface.
"So that's it, gravity... this is gravity!" A great wizard was so excited that he could hardly contain himself. He imagined a three-dimensional cloth, and then all directions collapsed towards the center, attracting objects.
Without waiting for everyone to recover, Lin En picked up another small ball, changed the angle and applied a little force, giving it an initial speed. The small ball then changed its way of movement and no longer rolled straight down, but followed the curved surface, continuously rotating around the large sphere in the center.
All the wizards focused their attention on this piece of white cloth with a diameter of only one meter. They vaguely felt that they were not staring at a few balls, but the great picture of the stars in the universe! Lin En intuitively used a piece of elastic leather to show the distortion and collapse of three-dimensional space in the form of a two-dimensional surface!
However, the distortion of time cannot be presented in such an intuitive way.
Fortunately, this is enough. This little experiment is just to help these wizards better understand the phenomenon that space curvature produces attraction.
Lynn looked at the wizards in the seminar who were either excited, absent-minded, excited, or fanatical, and summarized again.
"So I think gravity is a geometric effect caused by the curvature of space-time. Matter tells space-time how to bend, and space-time tells matter how to move!"
Matter tells space-time how to bend, and space-time tells matter how to move... The wizards in the hall who have some understanding of force field magic are constantly chewing on these words.
Exquisite, really exquisite! This is the secret of time and space magic!
"Mr. Lin, your speech today alone is enough to earn you a nomination for the Corona Medal!" A great wizard in charge of maintaining order in the venue sighed as he looked at Lin's slightly childish face.
At the last seminar, the legendary wizard Harov threatened to award Lin En with the Corona Medal. He was a little indignant. The other party did propose a set of star pictures that went against the mainstream theory, but it was not to the extent of issuing the Corona Medal. A Silver Moon Medal would be enough! But now it seems that although Lin En is only a formal wizard, his understanding of gravity and space is far beyond his reach.
Every word spoken today can serve as the founding theory of space magic. Some fanatics even recorded Lin's description of matter and time and space verbatim. Even if they didn't understand it, they could always use it when talking and bragging to others in the future.
"I have another question... Why doesn't the planet under our feet rush towards the sun under the influence of gravity? Just like that little ball." Raphael asked in confusion.
The second small ball that Lin En dropped continued to rotate around the curved surface as it fell, but the amplitude was getting smaller and smaller, and it would eventually be sucked into the side of the big sphere.
"That's because there is no air resistance in a vacuum. The speed of the stars will not slow down, forming a balance with gravity, and of course they will not fall into the sun." Lin En explained.
Raphael thought about it and noticed that the small ball was moving closer to the center because its speed was gradually slowing down. Its track became shorter and shorter, and finally it fell into the center of the curved surface.
It turned out to be like this! Raphael suddenly realized that all his previous doubts about the orbits of the stars were solved in an instant.
(End of this chapter)