Is it possible to have a time machine?

If possible, then how can we not see the future people now, that is to say, if there is a time machine thousands of years later, and the future people return to the past, then we are the past compared to them now, why is there no future people now? Are you right? There is a second possibility, that is, the time machine may appear, but once you enter the time machine, it is equivalent to entering another world, if the world we live in now is compared to a line, then future people who want to go back to the past must enter another line through the parallel world, what they are doing in that world has nothing to do with our world, which can explain why we can't see the future people.........I'm ......... dividing lineTo improve my statement, I think if it is the second possibility, then we may also see other parallel worlds to the future people, since it is a parallel world, then our world should not have particularity, the third possibility is that our current era is the current front era, so there is no relative to our future, this statement can explain why we can go back to the past but can not see the future people, pure mobile phone typing, is the landlord satisfied?

The current technology is not good, and there will be a few more Newtons in the future.

Hope mine can help you I hope you have a nice day, thank you.

Fool, if anything, everything is faster than the speed of light.

From ancient times to the present, time travel has always been people's dream. We want to go back in time to save a love or prevent a tragedy; We look forward to moving into the future and beyond the finite life. American physicist Rodman Mallett spent his life researching theories related to time in order to go back in time and save his father's life.

He believed he had mastered the secret to changing time and space, and that he could build a "time machine" for only £120,000.

The laser beam forms a "time tunnel".

According to reports, Mallett, 62, is a professor of physics at the University of Connecticut in the United States. His time machine is based on Einstein's general theory of relativity.

The theory of general relativity states that gravity is a curve of time and space, and that a strong gravitational field can warp light and slow down the passage of time.

Mallett's conception is not at all like the sleigh in the British sci-fi artist H.G. Wells' "Time Machine", or the time machine in the movie "Back to the Future". Instead, his shuttle will look like a cylindrical swirl of light with a diameter of one hail and a dozen kimido, but it is actually a huge gravitational field created by a series of laser beam rings, the center of which is strong enough to distort space-time. Therefore, if a particle is placed in the middle of the halo, the particle will be pulled by the gravitational field.

As close as you get to the gravitational field, both the clock and the biological clock slow down. If one walks into this "time tunnel", one may appear at some point in the past.

One-way limited "time travel".

Mallett believes that he will see the world's first "time machine" appear in his lifetime. He hopes to get £120,000 ($250,000) to build a prototype machine in the lab. However, Mallett also has strict requirements for funders.

We want non-military funding**, and I don't want this program to end up in the purest form of stuffiness"Highly confidential", so that we can't follow up on ourselves. ”

However, this envisioned "time machine" is not as described in science fiction**, which can go back and forth freely and reach a certain point in time as you like, but at most can only go back to the point when the machine was first started. Let's say you start the machine on January 1st and let it run for 3 months, then you enter the "time machine" in March and can only go back to January 1st at most. Therefore, it is impossible to go back to the Middle Ages or travel to ancient Rome, and it is impossible to reach the world of the future.