"Indeed, if apples are ripe and don't fall to the ground, how can they reproduce their offspring?"

The princess Dorothea nodded in agreement and expressed her opinion. This view is much more clever than Elsa's view, at least it shows that Princess Dorothea definitely thought about the reason why the fruit was ripe and landed.

"No, no, No, Your Highness, Miss Elsa, I don't think you understood what I meant, so let me put it another way!

Everyone knows the mast of a ship, right? If you ask experienced seafarers, you will know that when sailing, on the lookout of the ship, the lookout often sees the mast first, and then the hull, do you know what kind of essence is contained in this?"

Xia Lin asked mysteriously.

Previously, in order to confirm whether the world under his feet was a sphere, Xia Lin also specially asked the old seamen on the luxury passenger ship of the Flanya.

When they described the scenes they encountered other ships on their voyage, Xia Lin knew that this world was also a planet.

"What essence?"

Dale asked stupidly, without the slightest idea of thinking for herself, looking innocent.

"Your Royal Highness, do you know?"

Elsa thought about it but didn't have a clue, and asked the princess Dorothea in confusion.

"I don't know, Sir Charrain, please don't sell it anymore! Let's just explain it!"

Princess Dorothea frowned and thought for a moment, then shook her head helplessly at Elsa, urging Xia Lin with a dissatisfied expression.

"This means that the world under our feet is actually a sphere, and we all live on it!"

Charin finally said an answer, which stunned the four ladies present for a moment, and then everyone except Queen Dorothea laughed sneeringly.

"Hahaha, I didn't expect Sir Charlene to be so humorous and actually say that we have a ball under our feet!"

"Sir Charlene, if we live on top of a ball, why don't people fall down from it?"

"Your Excellency Xia Lin, I think we should be discussing a very serious topic, you shouldn't be so indiscriminate!"

While the other three girls were amused by this answer, the princess Dorothea frowned dissatisfiedly and warned solemnly.

After hearing this answer, she really felt a little unworthy of the careful thinking she had just had.

"So you don't have scientific thinking, and in scientific thinking, nothing is impossible, as long as it exists, it is reasonable.

In my research, we do live on a giant sphere.

As for why we won't fall, it's because of the problem of apples landing that I just mentioned, and the essential reason for apples landing is not that apples are ripe and want to land and reproduce.

Rather, the apple wants to reproduce, so when it is ripe, the strength of the connection between the apple stalk and the branch decreases, and when this connection is reduced, the apple will be attracted to the ground by the earth.

It's the action of the earth that causes the apple to fall to the ground, and I call this action of the earth gravitational pull.

At the same time, in my magical research, I have also found runes that control this gravitational pull, so that mages can cast spells and fly freely in the sky."

In the face of these girls' ridicule and anger, Xia Lin shook his head and explained:

"Your Royal Highness, I believe that a knowledgeable person like you should know the legend of the Black Sun of Calamity, right? Legend has it that when the sun in the sky is swallowed up by darkness, a terrible disaster will befall the earth.

This black sun has appeared many times in the history of our empire, and there are even scholars who depict the appearance of the black sun in the "Epic of the Sun King".

I heard that there is also a mural of the Battle of the Black Sun, the only time in His Majesty's life that His Majesty the Sun King lost because of the Black Sun, on the murals of the Imperial Capital Sanctuary.

Although I haven't seen it, I can deduce the image of the black sun on it, because I have already found the cause of the black sun, and the black sun phenomenon can also be proven

The theory that the earth is a sphere is proposed.

This maid, please bring me a few balls, any ball!"

The "Black Sun of Disaster" is the phenomenon of solar eclipses, and Xia Lin only knew the specific description of the solar eclipse phenomenon in this world when he saw the only failed Black Sun Battle of the Sun King in the "Epic of the Sun King" when he changed "Fatezero" before.

"Go ahead!"

Seeing that Xia Lin was talking without fear, the queen daughter Dorothea was also very logical in her words, not like she was crazy, and she was also a little curious in her heart, and said to the maid on the side.

Soon, with the efforts of a group of maids and guards, they found five round balls, all of which were top-grade chalcedony, which were thorough, and the high concentration of magic contained inside even made Xia Lin a little frightened.

If such a treasure is compared to the process of the solar eclipse phenomenon, if you miss it and break it, I am afraid that you will have to take the shares of the industrial park to afford it.

Seeing the cautious appearance of the maids, Xia Lin also seemed to be infected, he hesitated, did not use the hand of the mage, but pleaded to the princess:

"Your Royal Highness, can you please hold this chalcedony at this height?"

"Please let me come!"

Without waiting for the princess to answer, Elsa took the initiative to take the chalcedony and held the chalcedony in mid-air according to Xia Lin's instructions.

"Look, this is the ball representing the sun, and then my left hand is the ball representing the silver moon, and my right hand is the ball representing the earth beneath our feet!"

Xia Lin cast a shimmering spell on the chalcedony in Elsa's hand, and he had learned this simple zero ring spell as early as in the process of rune research.

"Please look at it, the next thing I will demonstrate is the trajectory of the Earth, Moon and Sun, and the reason for the occurrence of solar eclipses!"

Saying that, Xia Lin pinched the two balls and let the silver moon in his left hand start to move around the planet, simulating the earth-moon system, and then at the same time let the two balls slowly start to make elliptical motion around the "sun" in Elsa's hand.

As he moved, the glow of the shimmering technique visibly shifted between the two orbs in the shadows of the balcony.

"What does that mean?"

Dale and Olantina both looked at Xia Lin with a confused expression, not understanding the meaning at all, but the princess Dorothea frowned and thought for a while, and then she was shocked, and her beautiful face showed shock.

Elsa also seemed to see a little bit of the doorway, frowning and staring intently at the glowing chalcedony in her hand and the two chalcedony in Xia Lin's hand.

"Is that so? No, how can the earth be a sphere?"

Dorothea muttered, shocked by the experimental demonstration that had upended her previously constructed worldview.

With her intellect, she quickly connected the scene demonstrated by Xia Lin with the relationship between the sun, the moon and the earth, and then found that this set of theories did not seem to be wrong, but could explain many phenomena that they had long been accustomed to in life.

"No, the earth is a sphere, just like the silver moon and the sun in the sky! Even the stars that appear in the night sky are the same!"

Xia Lin concludes categorically:

"It is precisely because the earth under our feet is a sphere that rotates that we have a change of daylight throughout the day, day and night.

Because this spherical earth revolves around the sun, the sun gives us different amounts of heat depending on the angle of incidence when the sun's rays reach the earth, and we have four seasons in a year.

And the solar eclipse phenomenon is just like our earth revolves around the sun, and the silver moon also revolves around the earth.

It is when the Silver Moon turns between the Earth and the Sun that there is a "Black Day of Disaster", which means that during the day, the Sun is obscured by the Silver Moon!

If you look at the drawings drawn by the scholars in the records, or go to the church and look at the famous fresco, you will see that the edges of the eroded parts of the black sun of the calamity are often curved, and this is the figure of the silver moon that obscures the sun!"