Referring to the knowledge of spatial tension, after discussion, Yang Yuping decided to add a class to the military scientific research class to focus on spatial tension.

Knowledge can always be turned into power, and even on the front lines of war, classes are still important.

Admiral Rhodes approved the application for the class and recalled the cadets of the military research class.

Of the 37 cadets of the military scientific research class on the front line, only 32 were able to attend, and the remaining five could only attend the lectures online through the communication channel.

The class is scheduled in the laboratory of the crater.

Before starting the class, Da Liu and several other researchers were busy preparing experimental equipment.

Because the time was too rushed, even the students' seats were not arranged.

When a student of the military scientific research class walked into the temporary classroom, Da Liu pointed to the door and said, "Make your own chair and come in and sit, we can't be busy here." ”

"Want to help?" Ye Zheyu was the first to arrive, and took the initiative to come forward to help.

"No, no, you guys find a seat and sit down, there is about half an hour to start the class, the professor should be coming soon." Da Liu pushed his glasses and began to fill a pot with a clear liquid.

Ten minutes before the start of the class, 32 students of the military scientific research class arrived, 10 minutes early, and the time was pinched very accurately.

After all, he is already a soldier in the army and has developed discipline.

When there were still five minutes left, Yang Yu straightened his clothes and walked in and began to lecture: "Students, I never thought that one day I would teach everyone on the front line of the war.

"However, as a student of a military scientific research class, we should have an iron will, we are a military scientific research class, not only to fight for the fate of mankind, but also to continue to absorb knowledge for human scientific research.

"Military and scientific research, this is the true meaning of the existence of our class."

Speaking of this, Yang Yuping paused, flipped through the speech prepared overnight, and got to the point:

"In today's class, the main topic is spatial tension and curvature drive. The research and hypothesis of space tension and curvature drive are not new, and scientists have put forward related ideas as early as the 20th century.

"Why there is such a lesson all of a sudden, it has to start with Fang Yuanxin's ability trait.

"'Super Trait Evolution,' the name of this ability, I named it more than thirty years ago.

"However, it's a pity that the 'Super Trait Evolution' thirty years ago didn't meet the 'Lightning Speed', and there is no later story.

"After testing Fang Yuan, we found an interesting phenomenon, after the energy level of 'Lightning God Speed' evolved, a magical power appeared.

According to Fang Yuan's own description, this magical power would pull him away in front of him.

"According to the normal idea of power engine, if you want to get the power to move forward, you need to move forward by propulsion.

"From jet engines, to chemical propulsion of rockets, to ion thrusters...... At present, all the power engines manufactured by human beings are propulsion test engines, and none of them can escape this category.

Moreover, from the perspective of human science at this stage, the pull force created out of thin air is a phenomenon that violates science.

"After discussing with a few old friends, we came up with a possibility, a possibility that can generate a pull force.

"If this conjecture can be confirmed, then it can be said that the materials technology I am working on now will not be worth mentioning in the face of this technology.

"Before we talk about curvature drive, let's talk about what spatial tension is.

"First of all, let's take apart the word 'spatial tension', put 'space' aside, let's talk about 'tension' first, what is 'tension'."

In such a rigorous science class, Niu Dazhi had to skin it, and suddenly said: "One of my classmates in junior high school is called Zhang Li." ”

In the military scientific research class, most of them are students, young and lively, and when they hear this, they all want to laugh, but when they think of what a serious class this is, they all hold back.

Fang Yuan and the others turned their heads sideways and squinted at him, especially Eve, if they usually had to fight him.

Yang Yuping was very kind, and said with a smile: "Okay, let's take a look at what this thing with the same name and surname as your junior high school classmates is?" ”

At this point, Da Liu came up with a set of experimental equipment.

The set of lab utensils was a clear plastic tray with two one-dollar coins in the tray and two bottles of clear liquid next to it.

The liquid is filled with a needle-nosed bottle, which can drip out the liquid drop by drop.

"Let Da Liu do this experiment. If you want to get closer, you can also come up. Yang Yuping motioned for Da Liu to start.

Da Liu took over the conversation and began to say: "Here are two one-dollar coins, which have been wiped dry and laid flat on the table.

"These two bottles of clear liquid, one for water and one for hand sanitizer, I just poured from the sink in the bathroom.

"Now, let's drop water on these two coins and see what happens."

He said as he dropped water onto two coins.

One, two, three......

Water droplets fall on the surface of the coin, but instead of flowing down from the coin, they condense on the surface of the coin.

As more and more water drops, the droplets coalesce on the coin and bulge into a raised arc that covers the upper surface of the coin like a mushroom, but does not flow down the coin.

Both coins had seven or eight drops of water, and the same thing happened, the water remained on top of the coin and did not run down.

"You see, according to the common sense that water flows downward, the water droplets should not stay on the coin, why is this happening? Isn't this contrary to the laws of science? ”

Da Liu guided everyone to think about the problem, and then continued: "Of course, the experiment is not over here, and the next thing to do is a set of control experiments.

"I need to put a drop of hand sanitizer on one of the coins and see what happens."

As he spoke, he picked up the bottle containing the hand sanitizer and dropped a drop of the hand sanitizer onto the coin.

The hand sanitizer came into contact with the water on the coin, and in an instant, the water on the coin flowed down from the coin as if it had been punctured.

On the other side of the coin, the "mushrooms" formed by water droplets are still sitting on the coin.

Da Liu continued: "At this point, some students may have to say, maybe a coin can only withstand eight drops of water, and one more drop will not be able to withstand it."

"If there is no control group, there is really no way to rule out this suspicion. However, this is the rigor of the experiment. ”

As he spoke, he picked up the bottle of water and continued to pour it onto the second coin.

Nine drops, ten drops, eleven drops......

Until eleven drops, the water on the coin still stopped on it, but the "mushroom" was getting bigger and bigger.

"Okay, I can only go here, and if I drip it again, I really can't hold it."

Da Liu made a joke, which caused everyone to laugh: "Why can water stay on the coin?" The answer is tension, the tension of water. ”