So far, we’ve seen elements of time travel in many parts of the entertainment industry. Back to the future We can cite the vehicle in the film as an example. Although such tools come in different media and in different forms, they all have a common purpose: enable time travel†

Since these topics and tools came from the producers of the movie and game world, they were hardly considered realistic. But the physicist, who is known all over the world and who has done important studies, Stephen HawkingIn fact, time travel is theoretically possible. had said. Moreover, based on the concepts of fourth dimension and speed.

Let’s start slowly: what does this have to do with the fourth dimension and speed?

Let’s start with the notion of size. constantly nearby two-dimensional, three-dimensional We hear terms like When we start with the first, a dimension is often expressed with a line. A single variable is enough to find the points to put on this line. Nothing but forward or backward you have to go.

One for two sizes paper we can take as an example. We have this paper both width and length has. So it is two-dimensional.

In three-dimensional objects this is also: height we add. When we look at prisms, we think of them as three-dimensional because we use these three dimensions on them.

But apart from this, time There is also a fourth dimension known as So why is there a time between these variable values? Doesn’t the 1 second that elapses here pass at the same speed at every point in the universe?

The answer is no: for this, let’s look at the information Einstein put forward.

According to Einstein, as the mass of an object increases in space, time at this rate turns and it slows down. For example, the celestial bodies that we usually know have a much greater mass. in black holesWe’ve heard that time slows down.

This theory is explained using the following example: In a spacecraft three astronauts Let’s imagine that it is. Let one of them have entered the black hole and come out after a few minutes – even if it was impossible. The few minutes that have passed for him, according to the mass of the black hole, have passed outside. equal to many years can come. So it’s a bit like time travel.

or time in space flow faster We can cite reality as an example. What makes this difference is the mass of our Earth itself.

Hawking envisions a scenario where an imaginary spacecraft orbits a black hole and the mission is tracked from Earth: each orbit takes 16 minutes.

But these 16 minutes for those on Earth are also for those on the spacecraft. is it the same? Our answer is no, this black hole, whose mass is equal to the mass of millions of suns, therefore distorts time, and time slows down for those in spacecraft very close to it. In this context They experience 8 minutes of the 16 minute tour†

The example of a black hole also shows that speed is a very important factor in the perception of time. So who would want to jump into a spacecraft and drive them into a black hole at the center of our galaxy? Not us… Fortunately, Hawking thought of that too:

And as a result, he set up a scenario that is also theoretical. In this scenario our fast train and it tours the world. This train must have speeds close to the speed of light and continue on its way without stopping for an extended period of time. Your light for those who don’t know 300,000 km per second Let’s say you can go.

Any object that also has mass cannot exceed the speed of light is also known. For this reason, our train will only approach this speed. In this context, while sitting in the respective train as usual, the passengers see the earth. about 7 times per second they go on tour. We assume that the train maintains this speed as long as it is moving.

Now time begins to flow more slowly for those on the train, just like in the case of a black hole.

Hawking said that while the train was traveling at this speed, a child inside him… walk It also says that it cannot exceed the speed of light. The reason for this is that due to the laws of nature, time in the train will have delayed† In other words, the predominance of the speed of light is preserved.

Time inside the train now flows slower than outside, despite being on the same planet. What if the train we sent in 2022 toured the planet for 100 years? What year will we be when it stops?

The answer is quite simple, isn’t it? If you spend 100 years from 2022, you will reach the year 2122. But that does not apply to the passengers of the train. It’s just that time slows down for them. In 1 week they will be 100 years ahead†

It can be said that it is currently impossible to build such a train and a road for this train. So this idea seems to stay in theory. However, what can the scientific world do with the future? time travel It is very exciting to see that it is possible.

sources: Stephen Hawking/Daily Mail, Evolution Tree, YouTube, Dusge