Viewing the series Lost, which has become bizarre, with such changes in time, I realized that even well-known writers of science fiction, playing with time and the idea of \u200b\u200btravel by.
The remember that first started with this idea was HG Wells, which no one can say that science did not know was the Isaac Asimov of his time.
In his book "Time Machine" thinks he can somehow travel through time.
may be possible, maybe not. Depends on what you mean by time.
The notion of time we have in this civilization is that time is linear, going from past to future, as an endless succession of events, which some foster others, a characteristic of this universe is never Dumpy dumty recompose, if an egg is broken, do not we turn to paste and form the original egg. Entropy is what makes us feel the direction of time, as it has to do with the order or disorder of things (atoms, molecules, planets and galaxies), and entropy has only one direction, increasing the disorder.
Our brain is made up of atoms that are subject to such behavior, which is why we feel the time passes. Bauldor
Physicist says time does not pass, but despite this, sorry pass. Kirchhoff, the physicist said "there are moments when time stops and we can see eternity", that feeling is also known by almost everyone. So.
What we call time?
clocks measure time intervals only, not time itself. This situation continued until the advent of Einstein, who was that gave us the first real image of the time, not as something passive, it is there, if not something that is the fabric of the universe.
Einsteinian time image is influenced by gravity, among other things, in fact a distortion of space in 1919 was the confirmation of his theory of time and space.
In fact as we have no words for it, he called spacetime. Since they are indivisible, ie can not exist without the other two are the result .. Then a trip back in time means a shift in space.
According to his theory, which has been widely tested thousands or millions of Sometimes, as the speed approaches that of the light, time passes more slowly. Seen from the outside. As for the person who is moving feels that time passes in the same way, but the rest of the universe would go slower.
But that's not all, gravity curves space and be more serious but curved space. It is as if the source was a giant funnel that goes first compressing space and therefore, the things this in, but not that he pulled, but the space is smaller. Something similar to the grids for the perspective.
So far we only know that time is linked with time. And gravity has to do with it somehow, when speed increases, the mass also increases, and the mass is the source of gravity in some way, only things with mass have gravity, as Einstein's postulates, to approach the speed of light, the mass increases exponentially, and to be near the limit, the mass will tend to infinity.
But if something has an infinite mass, must also have an infinite gravity.
brings me back to the black hole, this time to nearly 99.50% of the speed of light, dragging everything in its path. Even galaxies.
Sometimes I get to ramble on about it and I think the shape of the universe, with its pattern of superclusters of galaxies is formed by some idiot alien experiment to try to reach the speed of light with some material .. Photons are
the speed of light, because they have no mass to a photon time does not pass, go out and reach the target at the moment, perhaps the photon in question was issued 13 billion years ago in a sun of the early universe and only now we see it, but for the photon, time nothing happened, went and came, and he was the same. Naturally, if something goes
higher speed of light, like the mythical tachyons, must have an imaginary mass, ie it is the square root of minus one. And if it is delivered now see the past.
Let's assume we have a telescope tachyon, if it could exist, could point to point in space where the earth was made two years, or 20 million years, is the same and then we could see it was in that moment, when those photons were emitted.
would be something akin to watching a star, any star we see, not see it as it is now, as was seen in the past. Alpha Centauri A we see it as it was 4 years ago. The same sun that shines on us we do not see how it is now, but as it was for 8 minutes, the sun may break now, and only in 8 minutes we would see it explode.
The problem is that there is no past, there is before an event, and after the event. Somehow
ancient Hindus came to the conclusion that time is made up of small pieces, which in the jargon we could say that they are modern "time atoms", in fact to make the calculations have to assume the time is quantified, ie how many times that there can not be continued, and indeed it is not, if we take pieces smaller time ever comes a time when the notion of time itself loses meaning, is called "planck time" because it is a consequence of his formula of quanta is more or less a one followed by some 43 other leading zeros is something ridiculously small. But then what is there between these ranges, or those quanta of time?
That sounds interesting thing is that it is pointless to ask that question. For the same formula we know what minimum amount of space possible. If we take an inch and started to divide into two equal pieces and these two, there comes a point where the very notion of space, it loses its meaning.
is something at least, ridiculously small, but it is a distance.
know then that the time and space are limited, are not infinitely small.
So how can something have an infinite mass? like that should exist in the singularity that forms the black hole?
In fact, in the event horizon, this is the outer boundary of a black hole, time would feel to spend eternity without time That is why the entropy would stop working, would always be the same.
But something is terribly wrong, if there is a limit to the space and time, things will never be infinitely small, as there is a physical limit to size. Therefore
a singularity must have a size, but in calculations the singularity itself, not size, in fact by definition, to be a singularity should not have size.
To ignore something so obvious, physicists thought that the singularity is a "breaking of space-time." But how can something that is not in our universe can cause serious so big?
of forces which has the smallest force is gravity, the electroweak force, is billions more than gravity, one of the ways you explain this, is that gravity has a greater force, but it is something that comes from another spatial dimension (not metaphysical, or spiritual) and "express" in four dimensions takes the value that we know, this is that the singularity reveals another dimension space, where gravity has its true value. And
gravity bends time as well.
Usually when a physical problem appears infinity is that something is very wrong.
Take the example of the electron, an electron has an electric charge, and we know that the electromagnetic force works to the inverse of the square, to get the calculations assume that electrons have no size, but what about electric charge? assuming that an electron has size and the load is distributed evenly across its surface, to compress it more and more, reached the point where it would tear the electron electromagnetic force. But that's not all, of the principle of Hinsenber know that energy (and therefore matter) can come out of nowhere, but needs to be returned at a time, and time is lower, the greater the energy absorbed provided. That
electromagnetic force in an area as small as photons create an electron energy, the field would be the lowest energy. But as we go deeper, increase energy and reach a point where it is infinite, if the electron is a point particle. And as we know that energy can be converted into matter, then the electron should have an infinite mass.
Which is obviously false, what is done is to replace the infinite value which is measured in the laboratory.
All this makes us think about the infinite, and how things work, physical and mathematical idealizations. Then
before speaking about the time we need to agree on the infinite.
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