Alok and others who had been watching from below for a while were already excited. After getting Lin En's approval, they immediately ran to the platform carrying a large box.

Yolande moved forward to take a look with some uneasiness. The big box was filled with some strange things. The most conspicuous one was a big iron ball with a protruding sharp needle embedded at the bottom.

"Masters, please allow me to use magic to make some changes here, so that the effect of the experiment can be more intuitive!" Lin En said.

"If you think this can help!" Raphael nodded and agreed.

Lynn immediately used the [Turn Fossils into Mud] skill to transform the large stone bricks under his feet into fine sand. He then asked Johnny and the others to piece together the stone slabs in the box to form a giant disc on the outside of the platform.

There are precise three hundred and sixty scales on the corners of the disk, and a wooden stick is placed in front of each scale.

Finally, Lynn asked the wizard who had previously developed the magic of flying to hang the iron ball on the ceiling of the seminar hall with a steel rope.

Due to the need to demonstrate magic, the hall of the entire magic seminar is not only wide but also built very high, with the ceiling being a full sixty meters from the ground.

The iron ball weighing thirty kilograms was tied to the sand only ten centimeters away with a thin steel wire rope, and the protruding sharp needle at the bottom had sunk into the sand.

"What are you going to do?" Yolande was completely confused. He couldn't understand what the other party was doing at all.

The rest of the wizards on the field also had confused expressions on their faces.

"Let's do an experiment!" Lin En waved his hand and asked Elrok and the others to stand aside, then asked, "Mr. Yolande, what do you think will happen if you push this iron ball hard?"

"Is there any need to explain that the iron ball will be thrown out and then swing back and forth in a straight line?" Yolande responded impatiently.

"I don't think so." Lin En shook his head, "Because you overlooked a very important factor, that is, the continent under our feet is rotating, and the resulting Coriolis force will inevitably affect the swing of the iron ball. Therefore, when the pendulum swings, it will constantly deflect and rotate around the disk."

"Absurd!" Yulande didn't believe in the so-called Coriolis force, let alone the outrageous thing of continental rotation. It was a complete fallacy! Thinking of this, Yulande stared at him intently, fearing that the other party would do something tricky during the experiment.

Lin En didn't even use magic. Instead, he pulled the iron ball to the zero scale position on the sand table and then let go of it, allowing the iron ball to swing freely with the help of gravity.

The nearly 60-meter-long steel wire rope was stretched straight by the weight of the iron ball. Under the influence of gravity, it created a gust of wind and hit the 180-degree wooden bar on the opposite side.

Just as Yolande said, the path of the iron ball was indeed a straight line.

The eyes of all the wizards in the audience were focused on the pendulum. Because the steel wire rope that bound the iron ball was very long, the iron ball did not swing back and forth very fast, but it was very regular, and it did not deflect as Lin En said.

Yolande waited for a long time but saw no change, so he looked at Lin and said mockingly, "Where is the phenomenon of the pendulum rotating around the disk that you just mentioned? Why don't I see it?"

“You were too impatient and didn’t observe carefully enough, so you didn’t see it.” Lin En sighed.

Yolande was very annoyed. He was not blind. Couldn't he see whether this thing was turning or not?

Just then, a cry of surprise was suddenly heard.

Several great wizards even stood up from their seats, staring closely at the sand table below the pendulum.

Where did it deviate? Yolande also looked in the direction of everyone's gaze, and was surprised to find that the track left by the needle at the bottom of the iron ball on the sand table was not a completely straight line, and there would be a slight deviation every time it went back and forth.

But this deviation is so small that it cannot be seen with the naked eye, and can only be judged by the trajectory left by the pendulum across the sand table!

Boom...

With a slight muffled sound, the wooden bar representing one scale was knocked down by the iron ball, and then the pendulum knocked the wooden bar representing one hundred and eighty-one scales to the ground.

Whether it is the marks left on the sand table or the knocked-down wooden bars, they undoubtedly prove that the pendulum is indeed moving slowly, and it is not swinging around, but deviating to the left in a regular manner.

"The wind, it must have been the wind that moved it!" a wizard from the school of prophecy shouted.

Yolande also thought of this immediately, but before he could open his mouth, he heard Philip's mocking words.

"We are indoors, where does the wind come from?"

"Even if there is no strong wind, the air is still flowing, and even the slightest impact is still an impact!" Yolande said with his neck stiffened.

In short, he absolutely does not believe in something like planetary rotation, which is not magical at all!

“Masters, since Mr. Yolande has doubts, please turn this area into a vacuum,” Lin En suggested with a smile.

This time, it was Ogest who took action. He was also very curious about the interesting pendulum deflection phenomenon. So, according to Lin En's request, he extracted all the elements in the entire disk without affecting the pendulum as much as possible, forming a vacuum area...

Yolande held his breath and stared at the disc, eager to see any new changes in the trajectory of the iron ball.

Ten seconds... thirty seconds... one minute, the pendulum still steadily shifted to the left, and even the amplitude of each deflection was exactly the same as before.

Soon, the wooden bars corresponding to the two scales and the one hundred and eighty-two scales were also pushed to the ground.

"There's no wind now!" Philip said sarcastically.

Yolande's face turned red and blue. He opened his mouth but could not speak. There was no magic and no wind interference. So where did the force that made the pendulum deflect come from? Could it be that the so-called Coriolis force really existed? As time passed, more and more wooden bars fell. In the hall of the discussion meeting, the wizards who were originally sitting in their seats had gathered together, surrounding the high platform, just to observe this magical experiment up close...

"This is actually true, the continent beneath our feet is moving, it is really moving!" a witch screamed loudly.

"It's incredible! This is simply a miracle in the history of magic. We actually live on a planet that is constantly rotating!" Raphael said with emotion.

(End of this chapter)