Chapter 303 Powell

Along the way, Liu Fei chatted with this sloppy middle-aged man. In fact, most of them were talking to middle-aged people. Liu Fei was listening. Liu Fei focused more on the floating armored vehicles passing by the roadside. He found that the more he went inside, the atmosphere of war became stronger. Moreover, after entering the corridor, there was no longer any police officers, all soldiers wearing military uniforms and holding weapons.

From the chat, Liu Fei had a general understanding of this middle-aged man.

The sloppy middle-aged man is a scientist who mainly engages in physics research, and he is best at mechanics. Of course, judging from some of the complex professional vocabulary he mentioned, his knowledge is quite complex. Liu Fei never lacks respect for such a person. In addition to nodding to deal with it, he occasionally answers a few questions.

"Oh, I forgot to introduce myself, and everyone else called me Powell, where are you?"

"Liu Fei."

"Well, I have some research on armor structure and materials. If you have any questions, you can ask me, maybe I can answer some questions for you." Nearly a hundred people on the hovering car, the middle-aged man was very enthusiastic about Liu Fei.

"Liu Fei, he must have something to ask for you!" Xiao Qiangguang said with a smirk.

"Why?"

"Think about it, there are so many people here, and if he doesn't pick up a chat, he will get close to you. He will show his respect for nothing, either a traitor or a thief, hehe! I guess this guy wants you to help him pay back the money... Liu Fei, this guy is quite angry. Ask a few questions, it will be difficult for him to kill him and kill him..."

"How long does the lifespan of a proton are, and how do you understand it?"

"ah……"

Powell was stunned and looked at Liu Fei unable to speak. The problem raised by Liu Fei was a physical problem that has not been solved so far. People used to think that protons are different from neutrons and they will never split into smaller particles. This was once regarded as truth. However, in the 1970s, theoretical physicists realized that the various possible "uniform theory" they proposed - the theory that the theory that all forces except gravity gathered into one pot - hints: protons must

It is unstable. As long as it takes a long enough time, protons will split in extreme accidents. The way is to capture the dead protons. For many years, experimenters have been closely watching large sinks in the air in the underground experiment, waiting for the death of protons inside the atoms. But in the monitoring for hundreds of years so far, the mortality rate of protons is zero, which means either the protons are very stable or their lifetime is very long - estimated to be more than 1 billion billion years.

Simply put, there is no definite evidence to prove how long the proton lives.

"...Well, you change it. I'm just an ordinary physicist." Powell said with a sad face after staying for a few seconds.

"Why does the cosmic constant have its own value? Is it zero and is it really constant?" Liu Fei asked his own question again. This question was something he had always wanted to know, because according to the knowledge he had told him that the universe is expanding at a faster rate, and this expansion is related to the warp engine. In theory, the speed of the warp engine has exceeded the expansion speed of the universe. Liu Fei imagined more than once that if he drove a warp engine spacecraft, could he catch up to the end of the expansion of the universe?

"Ahem... the universe should expand at a jumping speed. But the reality is not the case. There must be some mechanism to suppress this effect. If the universe is really supersymmetric, then the universe constant should be completely offset. But this symmetry - if it does exist - seems to have been destroyed. If this constant changes with time, the situation will be even more complicated... This question is too complicated and I will not explain it clearly for a while... That... can you ask a more practical question?" Powell's old face turned red, and the little bright brain in the dark screamed excitedly.

"The effect mentioned in Article 3 of Newton's Three Laws is always equal to the reaction of opposite directions. This means that if a horse pulls a cart, then the car also pulls the horse with the same great force. At this time, the car should park in its original place and remain unmoved. Why does it move forward? This force is equal, why don't they cancel each other?" Liu Fei has always been a little confused about the force and reaction force. According to Article 3 of the Three Laws of Mechanics, when attacking the enemy, according to the third law, he also suffers from equal reaction. However, the fact is that the enemy is injured and he is fine, which obviously does not conform to the third law.

"Haha... This question is very good. Everyone knows this law. Many people can apply it correctly, but few people can fully understand its meaning. Even me, it took me four years to truly understand it. At the beginning, I doubted the reliability of this law. In fact, it was right, but we did not understand it correctly... The two forces did not cancel each other out because they were loaded on different objects: one force was applied to the horse and the other was applied to the car. The two forces were the same, nothing wrong, but, can it be said that the same force would always produce the same effect? ​​Can the same force make any object get the same speed? Is it true that the effect of the force on the object has nothing to do with the object itself and the magnitude of the resistance of the object... "

"If you think of these, then the reason why the car is pulling the horse back with the same amount of force and the horse can still pull the car by pulling the car by the car, the force acting on the car is equal at every moment; however, the car has wheels and can move freely, while the horse is firmly on the ground, so the car has to follow the horse. You can think about it, if the car does not have a reaction force on the horse's power, then it's enough not to use a horse. You can pull the car by using a very small force, but in fact, to overcome the reaction force of the car, it is still a horse... "

"In fact, it is easier for ordinary people to understand that Newton's third law, 'activity equals reaction' to 'activity equals reaction'."

"Understand, it's like cutting muscles with a blade. Even if the blade is sharp, it requires considerable strength to pierce the skin and muscles, just like the reaction force of a horse pulling a cart."

Liu Fei nodded deeply in agreement. Today, he finally understood the problem that had been confusing him, and he felt a sense of cheerfulness.

Powell never dreamed that Liu Fei's consultation on the third law was to reach the highest level of murder art, because whether it was mecha combat or using Yuehua to fight, its essence was inseparable from the force and reaction force...

To put it simply, Kasso’s so-called art of killing is to exert force and reaction force to the highest level.

"Hey, we may have been together for a while, and if you have any questions, just ask." Powell was enthusiastic.

"Um."

At this time, the hover truck had arrived at a huge cabin. The above is a huge metal dome. The metal walls below the dome are dense metal passages. Track trucks are constantly shuttled through the passages. Some equipment and armor are loaded into the railcars and hover trucks through some bulky cargo mechas. The entire cabin is in full swing. It can be imagined that the dense passages on the metal wall must be like spider webs, and may reach any place in the Space City...

"Old fifth, there is a newcomer, be gentle, and have a contract worker!" After Liu Fei got out of the car, a policeman shouted into the busy crowd.

"It's so gentle, Space City is going to be finished, none of us can survive... Contract workers, contract workers... Damn contract workers, can't you find some experienced people?!" A short fat man wearing a hard hat, naked, and covered in oily body walked over cursingly, spat at Liu Fei and the others, with a look of contempt.

"One hundred and three people, sign it." The policeman impatiently handed a paper document and a pen to the short and fat man.
Chapter completed!