The results of this experiment were remarkable, the children danced happily, these earthen phones were good to use, and the children discussed: "It's so funny, I heard what you said standing in the distance, word by word, clearly visible, it's amazing, I've never seen such an interesting experiment." Pen Fun Pavilion www.biquge.info"

Xiao Fei wasted no time in explaining: "This is an experiment that proves that solids can also transmit sound. The device in the experiment is called a microphone. It is evident that when someone speaks to a bamboo tube at one end of the thin line, the air vibrates, and it pushes the parchment to vibrate with the thin line. At this time, the parchment paper at the other end of the thin line also vibrates, so that the parchment paper drives the air in the bamboo tube to vibrate, transmitting the sound to the party receiving the speech. Here, the microphone plays a role in resonance. It seems that we ancients were the earliest inventors of the telephone. Isn't this the ancestor of the telephone? Isn't that amazing?"

Everyone said yes in unison, and then curiously asked what the mobile phone was, why didn't they seem to have seen it. Xiao Fei then smiled mysteriously: "Listen to me slowly, so this theory has created this kind of magical mobile phone, this is a relic of ancient times, found in the back mountain, a rare good thing, do any classmates want to take it home to find out?" This is much more magical than those earthen telephones made of bamboo tubes, and the words of the other party can be heard clearly from a long distance. "I'm going to buy it—" said one of the children impatiently. "I'm going to buy it too. Not to be outdone, the other said. Several children of rich families surrounded them and took out their money tickets without saying a word, while the other students looked at them with extremely glamorous eyes.

Xiao Fei saw so many white flowers and silver, as soon as he was happy, he was out of control, and talked endlessly, everyone became more interested, even I sighed for the outstanding wisdom of those ancient Chinese, and thought that we modern talents are omnipotent, and did not expect that the wisdom of the ancients should not be underestimated.

Xiao Fei talked more deeply about the sea and the sky, regardless of the knowledge level of the children below. He talked about Newton's three laws, and the children were shocked, "Oh my God, an apple will also invent a theory, go back and let my mother prick my head with a bag of apples, and I can become a big scientist." "Then I'll just hit the tree, that will shock the brain more and generate more inspiration." "The funny language of these children is really funny.

Xiaofei got carried away and talked about Einstein's theory of relativity. He said: "When it comes to the theory of relativity, we have to talk about wormholes first, so I want to ask everyone, do you know what wormholes are?"

When the other children were at a loss, they suddenly burst into a shocking voice: "I know-" A child's volunteer voice broke the silence of the class, and seeing his mature chest, I thought that another prodigy was about to come out.

He said in a loud voice: "Impulse is the devil, my mother said don't be impulsive, you must be calm and calm when you encounter things, otherwise you will be punished by impulse, I think, wormhole must be this meaning." ”

This confused little guy really answered the question, which made Xiaofei smile bitterly, and I also smiled brightly. He looked at Xiao Fei's strange expression, and he also smiled stupidly, and the other children laughed.

Xiao Fei continued to talk endlessly: "The wormhole, also known as the Einstein-Rosen Bridge, is a narrow tunnel that may exist in the universe connecting two different time and space. Wormholes were hypothesized by Albert Einstein and Nathan Rosen when they studied the gravitational field equations, and they believed that instantaneous space transfer or time travel could be done through wormholes. This theory was proposed by Albert Einstein. To put it simply, a wormhole is a thin tube of space-time that connects distant regions of the universe. Dark matter keeps the wormhole's exit open. Wormholes can connect parallel universes to baby universes and offer the possibility of time travel. A wormhole may also be a space-time tunnel connecting a black hole and a white hole, so it is also called a gray tunnel. Theoretically, a wormhole is a multi-dimensional space tunnel connecting a white hole and a black hole, like a whirlpool in the ocean, which is ubiquitous but fleeting. These space-time vortices are caused by a combination of star rotation and gravity. Just as a whirlpool can bring a local water surface closer to the bottom of the water, two local spaces that are far apart can instantly get closer together.

Astrophysicists believe that wormholes are a natural time machine, and keeping them open allows us to go back in time or into the future, although there is no evidence that there are "macroscopic wormholes" in the universe. But Einstein's theory of space-time allows time travel, and some specific space-time predicted in the theory of relativity can turn back time, connecting two distant spaces together through space-time bending, so that travel in three-dimensional space becomes very rapid, and the journey of tens of thousands of light-years will be greatly compressed.

Astrophysicist Eric Davis thinks that if we can keep a wormhole open continuously, we can go back in time or enter the future world, but where is the wormhole? We have not found evidence that the wormhole exists in the real universe, and if the wormhole does exist, then it may not even fit a person, let alone a spaceship. In response, physicists have come up with a theory known as a closed time-like curve, suggesting that time machines can be made. The use of wormholes to travel through time and space can meet the requirements of the upper limit of the speed of light, and the faster-than-light operation is actually the result of space-time distortion, and the effect of faster-than-light is achieved by highly distorting space-time.

Not all wormholes are compliant. For a wormhole to be traversable, an obvious further requirement is that the spacecraft and crew must experience very little tension as they pass through the wormhole. Calculations have shown that this can only be satisfied if the radius of the wormhole is extremely large. Calculations show that a wormhole with a radius of less than a light year exerts enough tension on the spacecraft and its crew to destroy the atomic structure of matter, which no sturdy spacecraft can withstand. Therefore, for a wormhole to be traversable, it must have a radius much larger than a light-year-"

Xiao Fei paused, and was about to talk like a river, but was interrupted by a childish voice, "Brother Xiao Fei, what is this impulsive theory, is it true?" a child said curiously.

Xiao Fei got carried away and said, "Of course it's true, we are the best proof of it." As soon as he said it, he knew that he would lose too many words, so he quickly corrected it: "I was too excited just now to make it clear, I think it's true, but we have to prove it in person, this is science, science is to remove the false and keep the true." Find evidence of existence, not casual nonsense. There are still many unknown things waiting for everyone to explore in the universe, so please look up at the stars when you have time, explore the unknown and discover more mysterious things. ”

The little guys of the Great Song Dynasty fell into deep thinking, this guy spoke in simple terms, I listened to it shaking my head, I was happy, seemed to understand or not, after listening to it for a long time, I was empowered by this liberal arts woman, and suddenly realized, it turned out that the time machine of our scientific research institute is based on this theory, there is a solid theoretical foundation, not out of thin air, the predecessor called Wang Dalong is really powerful, I used to think that he was a blind cat touching a mouse, good luck, it seems that the scientific research institute is really a place where Crouching Tiger, Hidden Dragon, I just touched some corners, and I haven't seen their power。 And Xiao Fei is really a pity, a rare talent like him, because of his family relationship, went astray, otherwise he might be a great scientist, and a sense of admiration for him arose.

It seems that it's really not obvious whether he's smart or not, he's really wise and stupid, he actually understands such a profound theory, and when I have time, I have to ask him well, ask him for advice. I always thought that I was extremely smart, and I couldn't live a lifetime, and I didn't know anything about these advanced physics knowledge, and I was really ashamed that I didn't know anything about it, and I volunteered to come to ancient times, and I didn't know anything about how I could get here. It seems that there must be a teacher in the threesome, don't look down on anyone at any time, I am born to be useful, thirty years in Hedong, thirty years in Hexi, life is long, there are infinite possibilities. How can today's failures hinder tomorrow's success? Everyone's future is limitless. Could it be that what Yuan Tiangang said about Xiao Fei is a flying dragon in the sky, it is not nonsense at all? Oh my God, when did I start to be feudal and superstitious, man's destiny is created by himself, is it predetermined, how boring is that? These gods and men have been blown up by later generations to be godlike, and how can it be true to say some things that gods and gods are talking about? How can I be stupid to believe that it is true? I have really stayed in this unfortunate feudal society for a long time and have become old feudal. Xiao Fei is indeed repentant and reformed now, and he is not a bad person, but he is still my servant now, except for being better at science, how can he fly in the sky? In fact, fate is created and changed by his own diligent hands and wise brain. Therefore, we must strive to change the tragic fate of being stranded in ancient times and return to modern society as soon as possible.