Father, I really don’t want to be the emperor

When Ning Fan raised this question, Qin Ying smiled instead. He told Ning Fan that the ship had actually prepared a small boat for landing. Once it got close to the coast, the small boat would be lowered, and then the soldiers would They would rush to the enemy's coast in small boats, and then fight with the pirates on the coast.

"That's good. These small boats can be used for landing, but have you ever thought about whether there are lifeboats if the ship is in danger?"

Ning Fan asked Qin Ying another question.

When he heard the words "lifeboat", Qin Ying felt a little strange because he had no idea what this so-called lifeboat was.

After Ning Fan described the function of the lifeboat, Qin Ying also showed a look of deep thinking on his face. You must know that the situation at sea is changing rapidly, and any situation may occur at sea. If there is such a lifeboat, If the ship is in danger, the chance of survival will be greatly increased.

"However, such a lifeboat usually takes up a lot of space on the ship. After all, there are so many people living on our ship. If we bring too many things, the space on the ship will not be enough."

Qin Ying finally weighed the pros and cons and felt that Ning Fan's lifeboat plan was a bit too impractical.

After all, in the vast sea, if the ship takes in water or breaks, the chance of survival is almost zero. Even if there is a small boat for people to ride on, the final outcome of people drifting on the sea can only be slowly. To starve to death, instead of enduring the fear of being hungry for a long time, it would be better to just drown in the water and be done with it.

The lifeboat that Ning Fan mentioned was actually a rubber boat. However, in this era, plastic refining technology had not yet reached a large scale, so the possibility of manufacturing a rubber boat was greatly reduced.

“Do you know about sheepskin rafts?”

"Actually, the principle of this lifeboat is similar to that of a sheepskin boat. It is inflated when in use and deflated when not in use. It can be rolled together and does not take up too much space."

Ning Fan said to Qin Ying.

When Qin Ying heard what Ning Fan said, she couldn't help but look happy. Things like sheepskin rafts can indeed be of great use at critical moments.

With a heavy horn sound, the ship gradually left the coast and headed towards the deep sea.

In fact, in this era, navigation has not entered the era of large-scale development at all. People have almost zero accumulation of navigation technology. There is no lighthouse on the sea, and without any coordinates to judge the direction, we can only rely on some coordinates on the shore, such as distance. Mountains in places, such as some landmarks on the coast, etc.

In fact, in this era, people had no experience in ocean navigation, and Wang Hai's way of judging the route was only based on some landmarks on the coast to correct the ship's route.

This made Ning Fan think more, because Qin Ying will definitely lead a fleet on an ocean voyage in the future, and once an ocean voyage sails into the middle of the sea, all the reference objects on the shore will have no reference value. .

Entering the vast sea is like throwing a person into the endless void. It is even more difficult to locate one's position and determine the course. If there are no certain means, then the voyage is doomed to fail. of.

Ning Fan thought of things like longitude and latitude, sextant, and compass.

It seems that these things must be produced as soon as possible, but before that, Ning Fan still needs to let Qin Ying know the globe, longitude and latitude, as well as the basic principles of some things, as well as the most basic principles of positioning the North Star, etc.

Qin Ying has been very smart in reading since she was a child, and she is also familiar with Ning Fan's mathematics, physics and chemistry textbooks.

Therefore, Ning Fan taught Qin Ying some geography knowledge without any effort at all.

Qin Ying originally understood a lot of things through ordinary knowledge of mathematics, physics and chemistry, but what he lacked was only some geographical knowledge.

"Your Majesty, you said that the world beneath our feet is actually a large sphere. Is this true?"

When Qin Ying heard Ning Fan talking about the earth, her face was filled with shock, and her eyes revealed disbelief and suspicion.

Ning Fan understood Qin Ying's reaction very well. After all, anyone who heard this explosive news would immediately question and doubt him.

After all, for people of this era, this statement is a bit too shocking.

"If there is a flat piece of land under our feet, then why can't you see the edge at a glance when you are sailing on the sea?"

Ning Fan asked Qin Ying a question.

Qin Ying was indeed confused, because he felt that what Ning Fan said was reasonable, but he also felt that what Ning Fan said was too shocking.

"The wind is not strong today. We shouldn't be able to reach the pirate's lair in one day. I will explain to you the location of the North Star tonight."

Ning Fan now completely regarded Qin Ying as the Zheng He of this era, so he spared no effort to teach him some navigation knowledge.

Of course, Ning Fan also knows the principle of eating one bite at a time. Qin Ying cannot understand such bizarre things for a while. Ning Fan can understand, but Ning Fan must give all the knowledge to Qin Ying in a short time, because he It’s time to return to Kyoto.

"Your Majesty, if the world we live in is really a big sphere, then why won't our people fall down?"

And the people who live on the back of this big round ball, are they head down? "

Qin Ying asked a series of very childish questions, which made Ning Fan burst into laughter.

But soon Ning Fan found a round ball and used it as the earth to explain the main principles of the earth to Qin Ying.

"Have you seen this light? This light is like the sun, and this earth is the ball we live in. When the ball rotates, our time will also change. If the ball turns to the opposite time, it will be night. .”

Ning Fan explained the issue of the earth's rotation bit by bit, and also answered two naive questions Qin Ying asked before.

Of course, it was difficult for Qin Ying to understand what gravitation was for a while, but after Ning Fan explained it, Qin Ying actually said that she knew and understood.

"I wonder if your Majesty has ever seen an ant. When an ant lies on a ball, it will not fall. If the ball is big enough and we are small enough, then naturally it will not fall. , just like a ball with a lot of dust on it, the dust will not fall off, the same principle applies."