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Rated: E · Monologue · Scientific · #2093060
A view on the nature of time, and the variables or dimensions it can affect.
What is time?

A difficult question to answer.

We, as sentient being, experience time as a straight line, forever heading forward.

Since the beginning of our existence, us humans have used many ways to measure time. The moon, the sun, and then simple hourglasses and machines measuring water.

Then, clocks, watches... The measurement of time got more precise as the centuries went by.

Tic toc, tic toc. A single sound we all know. Sound waves that communicate the flow of time to the human ear.

But then, Einstein came. He explained that time is... a relative.

It changed everything. But, before you ask yourself or go on Wikipedia, let me explain what a relative is, in the right context.

A relative means that something depends on something else. To put it simply, it means that time depends on other factors.

Gravity is a main factor. As a dominant force in our reality, it goes without saying that it should have at least a small effect on time.

And let's not forget; according to Einstein's view on the variables, gravity is the same thing as acceleration.

Einstein explained that time depends on gravity in a very important way. One of the more mind-twisting thing he said about that is:

The higher you live above sea level, the faster you will age.

I first heard of this when I was a child. I didn't believe; I wanted to, but I couldn't. I simply couldn't understand.

Well, now, it has been proven true. The more gravity is applied on a sentient being, the slower it will experience time compared to a same being exposed to less gravity.

The higher you are over the sea level, the faster you will experience time, as you will be exposed to less gravity. By a few amounts, of course. But let's put this theory to the test...

In a black hole.

Let's say that there are two astronauts. Astronaut #1, and astronaut #2.

They are in a capsule, orbiting around a black hole. Both astronauts have a watch. These watches are connected together; astronaut #2 will see his watch measure time as astronaut #1 experiences it.

astronaut #1 suddenly jumps down, and drifts towards the black hole.

As #1 approaches the black hole, astronaut #2 looks at his watch.

The watch's hands start going slower and slower. If astronaut #2 looked at astronaut #1, he would also see him drift slower and slower towards the darkness.

However, from astronaut #1's point of view, everything is going as it should. He feels himself accelerating towards the black hole's horizon, as gravity exercised on him grows bigger and bigger.

Suddenly, astronaut #2's watch stops. It means that astronaut #1 has touched the horizon of the black hole. The gravity he feels is infinite, as a black hole is a singularity. This means that time slows to the point at which...

It stops.

Beyond the black hole's horizon (nicknamed the horizon of events), nothing is certain. Nothing can be observed, as light from beyond the horizon of event cannot reach our eyes. This means we cannot see a thing, only darkness.

This is why it is a "black hole".

So now, we know for sure, theoretically, that time is a relative. Gravity is also a relative. That leaves a constant.

But what is a constant?

Einstein taught us that the only constant is the speed of light. So the more gravity or acceleration is applied on an object, again, it will experience time slower.

To recapitulate: The faster you go, the slower you feel time;

The more gravity you feel, the slower you feel time too.

This resumes what is certain for us. Beyond this point in the text, everything said is not certain. Everything is a simple unproven theory.

So now, we know that gravity and acceleration affects time. By the same conclusion, it affects space.

But what if time became a dimension of space? A visible dimension?

As intelligent as we are as humans, it is impossible to imagine it. If time became a spatial dimension, another dimension would have to disappear for us to be able to perceive it.

For example, in the movie Interstellar, the protagonist enters a place where he can see his daughter's room at different moments in time.

For this to be possible, all the dimensions of space had to be eliminated. Time replaced space, so that the protagonist can only see the same place in all of this reality.

So this reality is composed of an infinite number of his daughter's room in geometrical patterns, at different moments in time.

So now, even if this is a mere movie, it proves that, in a theoretical way, time and space can be interchanged.

But it is still impossible to imagine time and space as both spacial dimensions. This would leave the temporal dimension with nothing in it. Such a reality would not be able to exist outside of a singular moment.

But what if it could?

That would mean that other dimensions, both temporal or spacial, have yet to be discovered!

Now, it is impossible for me to describe those dimensions, of course. They could be entirely new dimensions, or simply sub-dimensions, that compose bigger ones. Or maybe it could be something else entirely; something that doesn't affect us outside of another reality.

If you understood all this, I hope you think about it. Dear reader, send me your opinions on the subject by message if you think of anything.

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