With the release of the 2002 film "The Time Machine," the term "time machine" entered the public's consciousness. However, in real life, scientists had long begun research, attempting to create a real time machine that would allow people to travel through time and return to the past!
Recently, according to the British Daily Mail, American scientists have found a new method. By stimulating certain parts of the human brain, they can virtually transport a person to the past. A 22-year-old volunteer said that during the experiment, he was sitting in the laboratory, yet he felt as if he were inside the pizza shop his family owns, and he could clearly see the scenery outside the window from inside the shop, even spotting a local train station from his childhood.
Compared to this brain stimulation method, other research tightly focuses on the clues left by Einstein's four-dimensional space theory, seeking paths and methods for traveling through time.
As early as 1955, Malet, a physics professor at the University of Connecticut, had the idea of building a time machine. After 47 years of effort, he believed he had found the secret to time travel and was constructing a time machine to transport objects to the future or the past. His time machine is a gravitational field created by a laser beam halo; the gravitational strength produced by the halo can warp space. If a person enters such a laser beam halo, they would enter a loop of time, which really sounds incredible.
Time travel is so fascinating that the famous British physicist Stephen Hawking couldn't help but explore it. In May 2010, Hawking published an article in the Daily Mail pointing out three ways to travel through time: one is entering a wormhole (scientists consider wormholes to be time rifts and gaps), another is entering a black hole, and the third is traveling at a speed close to that of light.
Related research has continued to advance. By 2013, scientists had demonstrated for the first time what "going back to the past" might look like. They discovered within general relativity a possible spacetime solution with closed timelike curves. Using this special spacetime, people could theoretically travel through time. Using this theory, they simulated the process of time travel.
If one day a "time machine" were born, many people would surely be overjoyed."A 'time machine' might allow people to go back to the past to prevent a war or a massacre, but at the same time, this also means that changing history becomes very easy.\ So, who can guarantee that altering history won't cause chaos in today's life? Moreover, if people can freely 'modify' the past, will they still take today's life seriously?\ Is this ultimately a blessing for humanity, or a trouble, even a disaster? Perhaps it requires a brainstorming-style reflection."
Scientists achieve sending humans 'back' to the past
Replies (23)
Stop being contradictory, ask Xiaojiji, Wutong, about the philosophy of contradictions. Xiaojiji might understand it better than I do; I just casually read about it in middle school.
From the perspective of the future, if a time machine is built in the future, it will inevitably go back to the past.
The currently stable society and the future creation of a time machine are mutually contradictory situations.
So, the existence of society now indicates that the situation of 'building a time machine in the future' is wrong.
It was probably around 12 years, or maybe 13 years, I don't quite remember clearly. Some people believe that time doesn't exist at all; it's just something we imagine, like the axis of the Earth, a concept proposed for the convenience of describing the Earth's movement.
Um, time doesn't exist, so what is used to measure the length of our daily life? This kind of question is too profound, we students don't need to think too much- -'
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