What is the usual time? According to scholars, it is time, but from the perspective of physics, people who can create the word time already know that there must be a relationship between the speed of light and time.
The speed of light can change time. Speaking of this, someone will ask, “what is the relationship between the speed of light and time? The speed of light is the speed of light, and time is time. There is nothing between the two.”. But we know that the speed of light is the limit speed in the universe. The speed of light can reach 186000 miles per second. Any object or matter can never exceed the speed of light.But there is a point. Once an object exceeds the speed of light, it can change time, and it has the ability to travel through time and space. It may be difficult to understand now, but let‘s give an easy to understand example. For example, if a coin falls into the water from a high altitude, if we assume that the speed of the coin exceeds the speed of light and is falling rapidly, what kind of scene will we see? There will only be one scene, that is to see the water spray firstAnd the coin stays in the air. For this example, it is very unrealistic. First, coins can’t exceed the speed of light. Second, even if they can, the speed is very fast. We can‘t really observe who is fast and who is slow between the two. But this phenomenon can be achieved at the speed of light. Coins exceed the speed of light, which means that coins have passed into the future. What we see is the result rather than the process.
Time is not constant, it will change as the speed increases. If we assume that there is a spaceship with unlimited fuel and it travels at a speed faster than light, the people in the spaceship can reach decades or even hundreds of years in a short time. After that, if the people outside have spent 100 years, the people in the spaceship may only feel that it has only been one week or so. This shows that the passage of time outside and inside the spaceship is not as fast.
Quality can change time. Most people may not be clear about this. The greater the mass of an object, the slower the time of the object next to it. This gap is tiny on earth, like hair. If you want to have an extremely obvious phenomenon, the mass must be very large. Let’s take a popular example. If there is an object five million times larger than the sun‘s mass, one person is standing next to it and the other is standing very far away from it, which is equivalent to the distance of several thousand light years,This is when two people start timing at the same time, and when they stop at the same time, the time in the timer of the person next to the massive object will be slower than that in the other person’s timer. Hawking, the great physicist and prophet, thinks that the massive black hole in the universe is a tool for time travel, which is not necessarily unrealistic.
In the universe we live in, time and space overlap each other. When the mass and speed of an object increase, the time and space of its existence will also change. -If we can accelerate a particle until it exceeds the speed of light, then the lifetime of the particle will increase by dozens or even hundreds of times. This is equivalent to the moment when the particle exceeds the speed of light and crosses into the future, we mistakenly think that the lifetime of this particle has increased. Einstein also pointed out in his theory of relativity that when we move at the speed of light, time will no longer flow. If we exceed the speed of light, the time in your space will be relatively slow.
Now there are supersonic airplanes in the world. With the development of science and technology and the progress of human beings, most of the myths and novels in ancient times have become reality. I believe that in the near future, time travel will no longer be a dream, it will be another progress in human history.
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