Chapter 810 Space Tension and Curvature Drive

"There is tension on the surface of the water, so that the water droplets stay on the surface of the coin. The hand sanitizer dripping into the water droplets destroys the tension on the surface of the water droplets, and the water droplets that lose the tension will naturally scatter and flow to the table."

Da Liu explained the principle of water surface tension and tried to confirm it with experiments, making it easy for people to understand.

After he finished speaking, he looked at Yang Yuping.

Yang Yuping nodded and asked him to prepare for the second experiment, and then returned to the desk to continue the lecture:

"Just now we have proved through the experiment of coins and water droplets that there is indeed a force that makes the water droplets stay on the coins.

"Then, some students may want to ask, what is the use of this kind of power? And this kind of power doesn't seem strong at all.

"Next, we will use another experiment to tell everyone what is the use of water surface tension."

The voice just fell.

Da Liu and another scientist lifted up a rectangular transparent water tank and began to prepare for the experiment.

"First of all, let's make a paper boat with paper. Which classmate makes the paper boat look good? Can you help me?" Yang Yuping picked up a piece of A4 paper and prepared to hand it to the students in the first row.

Eve glanced around in a blink of an eye, then took a deep breath, raised her hand and said, "Let me do the stacking, I won't be controlled today, I promise."

Saying this, it caused a burst of laughter from the surrounding students.

Yang Yuping had also heard before that this little girl was sad because of being controlled by the mind of an alienated person, so she handed over the paper and said with a kind smile: "Of course, I heard that you are usually very lively, if you don't take the initiative to raise your hand, It's like being controlled."

This remark caused laughter again.

Eve took the A4 paper shyly, began to fold it over and over again, and finally folded a crescent boat and handed it back: "Is this okay?"

"As long as it floats."

Yang Yuping took the paper boat and put it in a rectangular transparent water tank.

The paper boat floated quietly on the water, and there was no wind in the room, so there was no wind to blow the paper boat.

"The paper boat floats on the water without power, so it won't move. Now we will put a drop of hand sanitizer on the back of the paper boat and see what happens.

As Yang Yuping said, he picked up the bottle of hand sanitizer on the table and dripped it into the water behind the paper boat.

When the hand sanitizer enters the water, the paper boat seems to have a strong power suddenly, and moves forward quickly until it hits the other end of the rectangular water tank.

This rectangular transparent water tank is 1.5 meters long, and the paper boat traveled a full distance of 1.5 meters before hitting the other side of the water tank before stopping.

In the military scientific research class, some students were dumbfounded.

Before seeing this experiment, it was completely unimaginable that a drop of hand sanitizer could have such great power.

Yang Yuping held up the hand sanitizer in his hand and said, "One drop of hand sanitizer made the paper boat move a distance of 1.5 meters. What is the principle?

"Could it be that hand sanitizer is a strong power source? The answer is obviously not.

"The force that pulls a paper boat to move is actually the tension of the water surface.

"Note my wording, 'pull', not 'push', there is a subtle difference.

"In experiments with coins and water droplets, we've shown that there is surface tension in water, and that hand sanitizer can break that surface tension.

"Similarly, in the paper boat experiment, the hand sanitizer broke the water surface tension behind the paper boat, and the water surface tension in front of the paper boat pulled the paper boat forward until it reached the end of the tank.

"If students are still interested in the experiment that the water surface tension can push the paper boat, you can try sticking a small piece of soap behind the paper boat on a wider lake. I believe you can go farther."

After completing two experiments, the students in the military research class were all attracted by the content of this class.

Water is the most common thing around everyone, but few people will observe what kind of power exists on the surface of the water.

Yang Yuping paused, turned the handout on the table to the next page, and continued: "Okay, we have proved the existence of water surface tension and the method of moving the paper boat through water surface tension through two experiments.

"So, what does this have to do with what we're going to teach today?

"Before the lecture, I mentioned a word, 'spatial tension'.

"Hypothetically, space, like water, has a kind of tension.

"So, is it possible for us to use this tension to make our 'paper boat' move? For example, the Shenzhou or something."

Niu Dazhi immediately raised his hand and said, "I know, stick a piece of soap on the Shenzhou's butt."

"You're so fucking smart." Fang Yuan and the others couldn't help turning their heads and squinting at him.

Not only was Yang Yuping not angry at such ridicule, but he said cheerfully: "That's right, if we can discover the existence of space tension and influence it, stick a piece of 'soap' on the buttocks of the Shenzhou, then maybe One day the Shenzhou will really fly because of this 'soap'."

After making a joke, Yang Yuping brought the topic back to knowledge: "Then the question is, what is spatial tension?"

He looked at the crowd and saw that the group of students were listening attentively with shining eyes, so he continued: "Everyone should have taken astrophysics when they were in school, and they have a certain understanding of the origin of the universe.

"According to textbook descriptions, the universe was formed by a big bang about 13.7 billion years ago.

"Moreover, the universe is still expanding. In other words, the universe was a point at the beginning, and it continued to expand after the big bang.

"Let's imagine that the universe is constantly expanding like a ball, so is the space of the universe flat?

"Long ago, humans thought the ground was flat, but in fact the earth is round.

"The universe was formed by a big bang, and it is still expanding. It is conceivable that the space of the universe is not flat, but curved.

"Since there are radians, the space is not fixed, but can be distorted and changed.

"That is to say, there is tension in space. If we can affect this tension and eliminate the tension behind the spacecraft, then the tension in front will be like the tension of water, pulling our spacecraft forward.

"This driving method has another name called curvature driving, which is a technology at the space-time level.

"According to the level of civilization, this technology has gone far beyond the scope of star civilization, and is much higher than strong interaction materials."

Hearing this, Fang Yuan finally understood how the miraculous pulling force produced by "Lightning Speed" came from.

However, Yang Yuping then added: "However, so far, we have not had experiments to verify the existence of spatial tension.

"Fortunately, space tension may have appeared on Fang Yuan's body. After the battle, he must be tied to the laboratory to study it."

After hearing this, everyone started laughing again.

Han Youwei turned her head and whispered, "You must be the professor's favorite mouse."

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