How to travel through time and space?

Since the 1940s, some scientists in the former Soviet Union began to secretly research "time machines" and established a special "Parallel World Research Association". However, the research process did not go smoothly. Disasters caused by "time machines" have occurred many times. By 1961, a shocking experimental tragedy once again halted research. At that time, a "time machine" experimental platform carrying eight leading scientists suddenly disappeared without a trace, and all buildings near the experimental site were destroyed. On the following August 30, 1989, an earth-shaking explosion suddenly occurred at the experimental base of the "Parallel World Research Association" on Anjou Island. The explosion not only destroyed the 780-ton experimental cabin, but also almost The island of about two square kilometers was flattened by the bombing.

There are different opinions on the cause of the explosion of the "Time Machine" experimental cabin. One theory is that the experimental cabin carrying three scientists collided with a huge when it arrived at a parallel world (alternative space) or was entering a parallel world. An object, probably an asteroid or something, collided. The "Time Machine" experimental cabin lost its power propulsion system and its whereabouts are unknown. Some Russian scientists suspect that it may have disappeared forever into a "parallel world."

The last record of that experiment is still kept in the secret archives of the "Parallel World Research Association", which records the "last words" left by one of the experimenters: "We are going to die, But we can still continue the experiment. The light here is very dark, and everything we see is double. Our hands and feet become transparent, and we can see our own blood vessels and bones through the skin. The oxygen supply can still be maintained for 43 hours. , but the life support system equipment has been severely damaged. Say hello to our family and friends!" Then, the communication was suddenly interrupted, and there was no news from the three scientists who participated in the experiment.

Although the "time machine" experiment came to an abrupt halt, people have not given up research on how to slow down time. Russian scientist Vadim Chernobrov also conducted an amazing scientific experiment. Through a "special collision" with a magnetic field, he was able to "slow down or accelerate time" at will. It is said that the most successful one was that Chernobrov slowed down the hour by 1.5 seconds in his laboratory. Bilimov said that in August 2001, in a remote forest in the Volgograd region of Russia, scientists led by Chernobrov conducted a preliminary test of a "time machine" model, although the experiment The model was powered by a car battery and had very low energy, but it still managed to "change time by 3%". The subtle changes in time were successfully recorded by some symmetrical crystal oscillators. (Dayang)

According to US media reports on the 21st, you only need to pay $10 to enjoy a "time travel"? Although it all sounds too absurd, the founders of an American company called "Time Travel Fund" solemnly declared that they have a rigorous theory to prove the "feasibility" of the "time travel" business. And they are by no means a scam company,

This is definitely no joke - in fact, even the authoritative American media "USA Today" has introduced the company. According to the "Time Travel Fund" company, science has proven that "time travel" is indeed possible in theory, but the actual realization may have to wait hundreds of years, and the "time travel" business is launched on this premise. . To put it simply, assuming that time travel becomes a reality 500 years later, that is, in 2504, the company can send staff living in that era back to 500 years ago (that is, 2004), and bring those who are currently there Customers who pay the "time travel fee" are brought to the future 500 years later (i.e. 2504).

The "Time Travel Fund" company stated that although each customer only pays 10 US dollars, and "time travel" after 500 years is likely to require a large amount of money, customers do not have to pay for the funds. Worry about not having enough. The company explains that the $10 each customer pays will be invested in a company fund and earn interest. And 500 years is a long time. Even if factors such as interest, taxes and inflation are taken into account, the value of 10 US dollars will increase to tens of millions or even hundreds of millions of US dollars in 500 years, which is enough to pay for a huge amount of "time travel". fee” and enough to ensure that customers can live a comfortable life in the “future world”. It is reported that once a customer pays $10 to the "Time Travel Fund" company and submits his detailed personal information, he will receive a beautiful certificate from the company, indicating that the customer has obtained the qualification for "time travel". The certificate is said to be made of special materials and can last for hundreds of years.

The company emphasizes that customers must fill in their current address clearly when filling in personal information, otherwise "future people" 500 years from now will not know where to find the "time" they want after traveling through time and space. travel” customers. (Source: Beijing News/Poselli)

The article "When will the time machine set off" in the ninth issue of this magazine left three questions. Readers have shown great interest in these questions. And actively participate in discussions: travel to parallel universes and set up a time travel agency; use the energy of lightning, or become an electromagnetic ghost.

They believe that this can solve the paradox that may arise from traveling back and forth between the past and the future. While waiting for the machine designed by scientist Paul Davis to take us to the future, let us take a look at the whimsical ideas of readers!

About the first question: Flying to become younger< /p>

Using the formula mentioned, it can be concluded that 15×10-14 seconds can be earned in every second. Time is indeed very short! If a person traveled non-stop by plane for an entire year, time would slow down by about 5 microseconds.

Many readers have figured this out. It is conceivable that under normal circumstances, traveling every day at the fastest speed we can achieve, we will not get much younger in our lifetime.

Regarding the second question: Back to the Future

Regarding travel in the past time, Paul Davis provided an answer based on wormholes, which most readers think The idea is very novel. However, it is impossible to use a wormhole to travel to a time before it was created. If we built a wormhole today with a time span of 100 years between the two ends, someone could travel back to 2003 a century later.

Technical Issues

Many readers agree with the idea that travel to the future is possible, but only due to some technical details. Some readers said: "It is impossible for 'future people' to break in, because it is impossible for a time machine to go back to the era before it came out." Others think: "People who travel to the past cannot go back to the future, because no matter what In the past or now, people have not been able to travel in time, so travelers cannot go back to their time.”

Some readers clearly stated, “We don’t have time machines now, so will the travelers of the future.” Without such a stop, they cannot visit us."

Others believe that there is a possibility that we are visited by time travelers, "but we will only know when we travel in time in the future."

Some people think that this problem is even more profound: "Using the time machine conceived by Davis, we can only reach a point where the past information has not yet reached, not the source of the information! Therefore, there is no way for future generations to It is impossible to interact with the information source, and we will not encounter 'him' in the past."

Some people believe that only future travel without turning back is possible, so "we can encounter two types of time. Travelers: Earthly Time Travelers and Extraterrestrial Time Travelers, but Only Travelers from the Past ” If we didn’t meet the first group of travelers due to technical issues, then maybe for the second group. Another question will arise: "Since they built the time machine to go to the future, there may be a gap with our civilization, and their level of civilization is much higher, so this effort is not worth it."

What if we run out of "gasoline"

One of the questions Davis raised about future travel is energy. Some readers think this is an insurmountable obstacle, "With a little calculation, I know that if hydrogen is used as the propellant of the spacecraft, the amount used is almost 1 cubic kilometer."

However, some people are interested in reducing costs. The possibilities are more optimistic: "Why not harness the energy of lightning or hurricanes?"

We don't know what Paul Davis was thinking, but we should ask what container would be used to hold these energy!

Is it crazy or...

"I wonder if someone will be sent to a mental hospital because they say they are from the future, and my doubt is that even if there is time from the future Traveler, will he tell the truth? "Someone said in the letter, "If someone knocks on our door one day and says that he is our descendant, who among us will believe it?"

< p> Others have the same view: "Maybe we already have future travelers, but we haven't discovered them. So how can we tell the difference? Even if he says he comes from the future, who will believe it?"< /p>

Some people think even further: "We imagine that we are time travelers, and we arrive in 1930. If we talk to people like this, they will treat us as lunatics and put us in a lunatic asylum!"< /p>

If you want to go crazy, let’s go crazy

Some readers are more imaginative: We might as well imagine that in the distant future, time and space travel has become commonplace. Until then, it will take a world-class travel agency to arrange everything for us.

"The travel agency is divided into two specific groups. One group is responsible for administration and public relations and planning, while the other group is responsible for accompanying scientists and other tourist groups to prevent future residents from interacting with their past relatives. Or anyone else."

Some people thought of legal issues: "There must be a principle of non-interference to prevent time travelers from being recognized."

Someone reminded people to be cautious: "Time travelers should take precautions and not be completely confused with the time they are going to. For example, if a time traveler decides to go to the Middle Ages, he should prepare a knight's armor, learn some chivalry, and be very talkative. . ”

Some readers naively believe that there must be some rules to prevent rash time travelers from interfering with the era they are visiting.

"I feel that measures should be taken to prevent possible interference and avoid meeting other people on shorter journeys. Perhaps the scientific community of the past can just be persuaded to try to avoid direct contact between travelers and their ancestors."

Pessimism People

What if time travel is impossible? Not because of technical issues, but because we lived in a universe parallel to ours in the past. Some people are convinced by this and think, "If someone wants to time travel, the huge magnetic field deformation will cause him to lose his memory." Some readers think that time travel is impossible. If the paradox is admitted, it means that there is no real universe, and there is no scientific and rational order. Some people think it’s not that complicated. “Everything in the universe exists in the present tense in absolute terms at every moment. There is no time travel!”

Parallel Universe

The idea of ??parallel universes proposed by Stephen Hawking has attracted many readers. Some readers believe that "travelers from the future can only enter the past or present of a parallel universe and will not affect our present." Some readers have more interesting ideas: "Once we meet our own descendants, natural forces will throw us into a parallel universe and leave our 'copies' with the travelers."

Some people say this It is believed: "Anyone who travels to the past will interfere with history and end up in a parallel universe instead of ours."

Some people have proposed an answer, believing that time travelers "will experience a molecular The plane changes, turning it into an electromagnetic ghost that cannot affect the physical body or anything else."

Although some people do not believe in the possibility of time travel, they are deeply attracted by this theory: "Our universe may be one of countless possible variations in an infinite universe, each with its own history and life."

Like a movie

Past Depicted as indelible and therefore unchangeable. This is the view of some people: "Why should we change the status quo and correct the mistakes of the past? We are just traveling." If we use film to record a person's life one by one, then this film is this A person's past cannot be changed because it is recorded.

Someone also used film to explain that it is impossible to interact with the past when traveling in reverse time: "We can see the film moving backwards, but we cannot enter the film (where we traveled during the trip) . ”

Regarding the third question: Whose credit

David Deutsch came up with the teacher-student paradox that is the most troublesome. There is no inherent contradiction and no idea where this news comes from. Deutsch himself believed that it struck at the heart of nature's orderly rationality and was comparable to the idea of ??a perpetual motion machine.

Some people think that the credit lies with the professor

Some readers think: "Judging from the series of things the professor has experienced, we tend to attribute it to the professor. But this may not be the right to discovery. A question, a theory, the specific way it is put forward is not important at all, the important thing is that it is put forward."

A reader quipped, "Discovery has no source, it just exists and becomes." Components of the universe."

Others believe that the right of discovery should belong to the professor: "Without his discoveries, the student would have nothing to publish, so to speak, it was his help to the student that made her. This solution was later developed and published."

Some people support the students.

Some people believe that this discovery belongs to the female students in the first process of the incident. "After the professor's time travel, because the cognitive process has changed, we can no longer regard him as the same person." Someone said, "If such ideas did not arise in her brain, then the professor would never have found a way to describe these "

In the eyes of some people, there is no doubt that "the only purpose of returning to the past is to teach the solution to his students, which will lead to another past of the professor. ”, the two have no influence on each other.

Multidimensional Travel

However, readers’ creative thinking doesn’t end there.

Someone also asked a new question. For example, some people doubted "whether there is actual time" and made a philosophical conclusion: "Sometimes reality far exceeds illusion. The latest physical research shows that we live in a world with 11 or even more dimensions. So why do we Want to talk about time travel instead of dimensional travel? And in all dimensions! ”

What an interesting idea! Everything still has to wait for the experts to build a time machine.

Three questions

1. According to the theory of relativity, any movement is time travel. The faster the speed, the more obvious the effect of time travel. So, all of us today can time travel if we want to. A flight on a regular airliner is a brief moment of time travel.

In fact, time passes slower for people flying in the sky than for people sitting at home. Although people are not aware of this difference, it can be measured. It increases as the speed increases. increase.

How much younger would a person be if he traveled by plane with an average speed of 600 kilometers per hour?

To calculate the specific value of time slowing down during motion, the following formula can be used:

Where V is the actual speed of the moving object, and C is the speed of light.

2. Compared to traveling by plane, when it comes to time travel, what people think of is taking a giant step in time in the past or future. If we are indeed building a machine that allows people to travel in time, why has no one ever encountered a descendant of themselves traveling in time into the future? This is a question asked by Stephen Hawking. Do you know how to answer him?

3. Time flies by 50 years, and time travel has become a common thing for people. A mathematics professor in 2050 was driven by curiosity to travel to 2060. In the library of his school, he discovered an amazing solution to Einstein's equation. This solution was published in "Science World". The author is a young female student.

The professor, who was excited about this discovery, went back to 2050 to look for the female student, and found her among the first-year students. The professor described the solution to the equation to her.

The female student learned this solution and published it in "Science World".

What is the real source of this discovery, Professor?

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