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A thing I've wondered about time.
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We all know that time is directly connected to space. In fact, movement in this space can affect our movement in time to some small extent. (Eg, if you fly a shuttle fast enough, you will supposedly return to find that everyone else has aged a lot more than you have.) There's something I've been kind of wondering. It seemed to me that time might be a sort of form of inertia. Like the law that an object will continue to move exactly the same path and speed if no outside force interferes, I feel like this basically applies to time as well. The shuttle effect is a sort of "friction" to me. One thing that only served to encourage this belief is that I once heard that the universe had an equal chance of being a universe of antimatter rather than matter (in which case we'd call it matter and this would be animatter d-: ) but, then the universe would move the other direction in time. (Forward for it being what is backwards to us, not actually moving from ending towards beginning.) The implication of the even higher connection to space itself made me think that it could well be possible that we do have a sort of inertia pushing us forward. I know this isn't exactly important or anything, but, I am still curious. So try not to laugh too hard if you happen to know a lot more than I do about the matter and this all seems silly to you. EDIT: Oh, and more importantly, something that has been driving me crazy is trying to understand just exactly why it is that time and space are so directly connected. Why should movement in the first three dimensions affect movement in the fourth to some small degree? According to that experiment in which they supposedly accelerated a laser to such a speed that it actually exited the other end nanoseconds before it started (if this experiment was really true, people tell me it hasn't been repeated or verified just yet) the relationship must be quite important. |
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Re: A thing I've wondered about time.
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by
on 2004-08-17 23:34:20 (edited 2005-02-24 00:44:05)
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you draw an interesting parallel between high speed travel's effect on time observation and the effect of friction on the velocity of an object. i believe this parallel is a result of the fact that the both of these phenomena are types of 'drag'. when you slide across the floor, you create a drag in the opposite direction of your motion. "the floor wants to slow you down". when you accelerate through space (approaching near-light speeds), you find it harder to accelerate further. "the universe doesn't want you going faster than light". i can see how these two systems are similar. as for antimatter: yes theoretically any particle we deal with in every day life, take a photon for example, can be thought of as an antimatter particle. its like saying "you either add one or subtract negative one". x-(-1) = x+1 except in this case, particles have two properties which must be considered. take a look at this graph, it might help explain: [edit: graph removed] 
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Re: A thing I've wondered about time.
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Hrm, so it's not an entirely stupid way to look at it then? I wonder if this way of looking at it might actually have some real merit besides just making it easier to imagine the concept of a friction type of thing. Anyway, all I was really saying about the animatter thing -- besides the fact it proves a higher relation between time and space -- is just that if humans existed in a universe made up of antimatter, they would perceive time as moving forward and antimatter atoms would be called matter instead of antimatter. d-: Just a matter of perspective in other words. |
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Re: A thing I've wondered about time.
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It would be impossible for a world to be entirely made up of matter or antimatter, they both defy physics laws. From what I perceive, our world is made up of both matter and antimatter at the same time. Besides I heard that scientists manage to actually obtain antimatter by slowing them down(in our perspective). This just proves that the world is a mixture of both antimatter and matter.
Death, Rebirth and Create
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Re: A thing I've wondered about time.
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by
on 2004-08-29 00:41:27 |
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you have no idea what you are talking about. if antimatter and matter come in contact, they annihilate each other in a huge release of energy.
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Re: A thing I've wondered about time.
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I know if antimatter and matter caome into contact, they annihilate each other. But the thing is they don't come into contact with one another. I didn't say they did. The point is the universe exists in a balance of systems such that for every electron, there will always be a positron.
Death, Rebirth and Create
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Re: A thing I've wondered about time.
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by
on 2004-08-29 12:05:59 |
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actually, there is thought to be much more antimatter than matter out there.
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Re: A thing I've wondered about time.
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And why is that?
Death, Rebirth and Create
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Re: A thing I've wondered about time.
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by
on 2004-09-02 07:38:05 |
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there just is!
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Re: A thing I've wondered about time.
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I have a question too: Beta+ desintegration goes like p+ (proton) ----> n (neutron) + nyu (neutrino) + e+ (positron) Beta- desintegration goes n ----> p+ + e- (electron) + anti-nyu (antineutrino) Releasing a positron with impulse pp is just the same as capturing an electron with impulse -pp ? Seems strange though to me: does that mean that Beta+ desintegration cannot occur inside complete vacuum ? PS. : My notation of neutrinosis just a tribute to nyuu-san from Elfen Lied :) |
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Re: A thing I've wondered about time.
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by kiryuu-rekka
on 2004-10-23 23:27:09
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There's more anti-matter than matter? o.O Could it be possible that the amount of antimatter is equal to the space not occupied by matter? If a dimension of anti-matter moves the opposite direction in time than our dimension, would that mean that time is infinite since it has to grow both ways? (assuming that anti-matter is bound to the same space-time as us) |
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Re: A thing I've wondered about time.
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by
on 2004-10-24 00:44:56 |
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antimatter is NOT the same thing as vacuum -- the absence of matter in space.
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Re: A thing I've wondered about time.
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by kiryuu-rekka
on 2004-10-24 02:20:52
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Sorry.. I probably didn't write clearly enough.. I meant to ask whether it was possible that the amount of anti-matter that exists is equal the amound of anti-matter is needed to occupy the vacuum left by matter. If more anti-matter exists, then there would be ratio of anti-matter to matter, since they need to be balanced.I thought of the positive and negative space in a 2-colour image to represent matter and anti-matter. (yes.. I understand that anti-matter and matter don't exist in the same space..) |
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Re: A thing I've wondered about time.
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by
on 2004-10-25 19:15:33 |
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no. there is no way that could be the case.
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Re: A thing I've wondered about time.
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This refers to EnderW's question: If I understand your question correctly, you are basically asking wheter antiparticles are merely particles viewed in the theory as moving in reverse time order. The answer is no, antiparticles physically exist and we can observe them as such. In particle accelerators we can create pairs of particles and antiparticles and observe them, either directly or indirectly. |
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Re: A thing I've wondered about time.
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i dont believe that you can go back in time even if you were able to travel faster than light, you are merely just travelling faster than light, time in this is irrelevant. time should not be looked upon as a line that can go either way. Time is a phenomena thats on a completely different scale, possibly another dimension in fact, which makes it immune to anything thats happening within realtime.
Those who think they know everything annoy those who actually do.
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Re: A thing I've wondered about time.
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Well all newer theories on time are suggesting that it flows in both ways constantly, its just that for a large set of stuffs like people and planets there is a tendencie to only move one way. Thats something to do with either the possibility of a person changing direction in time entirely is so small that it is nearer an imposibility than not simply becuase everything that makes you would have to do it all at the same time. Though for an individual particle it is thought now to be very common an occurence for it to exchange/radiate photons backwards and forwards through time. The reason that time and space are linked is because there essentially the same, a dimension that can be traveled through. Its that simple, surely. The only reason it may seem more complicated is obviously because you dont walk through time optionally, but generally speaking the faster you go through the 3 space dimensions the slower you will go through the fourth one. Though i prefer the theories that suggest that we are actually only in one point in time, though i dont see that it matters. I would have to assume that if you go through time for long enough youll eventually get bak where youve started and depending on how long time you may have been round all of time many many times. though from a non physics point of few time may only exist if we measure it, live in the moment and you may never realise that the last moment wasnt just another part of this moment or that there will ever be a next. as the good man said, 'time is relative'. If you want the facts you should pick up one of those many millions of schrodingers cats books, or one of the many diferent world books. edit: That thing about backwards and forwards in time supposebly should work like a mountain so once you get to those high speed velocities you may just go over the peak and start back on yourself. though this is probably irelevant to what you wanted to know, but it is interesting. p.s. the t**t above is an idiot, 'time is on a different dimension', surely time being a dimension in its own right, etc etc.. do i need to say more.  |
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Re: A thing I've wondered about time.
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IMHO: Travel at near-light speed will only make you less effected by the time, counted by the standart time from other people who don't travel at light speed. The time itself do it's work on both people who do travel at near-light speed or stays in the planet. The time just merely bend a little in respect to the extreme speed of light. Because of that we understand that time is relative. So, traveling at at near-light speed won't make us able to return back to the past. At this point, time travel is irelevant other than you perfectly freeze yourself and wake up years from now, but that's hardly a time travel to me. Of course, maybe there are another possibilities of how-to-do time travel. But i'm sure it wouldn't about traveling at light speed.
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Re: A thing I've wondered about time.
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by
on 2006-09-22 21:01:50 |
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About time is that once Shakespere said that time is just one of the cruelest invention made by man. As you can see that time doesn't exist but we still need it to reorganize ourselves. Universe are not influenced by time as I do know that we measure how long does the sun live to it's limits. Einstein once said about time in his theory on Relativity as you all know that every different position, time is bound to be different. Take for instant that a person stands on point A and his friend on point B which is not far from point A. When they looked at the time that they began to notice that time is slightly different at two different points. After all, relativity in sense of time has became a wide subject since Stephen Hawkings used the theory once for this ideology about the black hole. The relativity also once used in the so-called Bell's theory which if I'm not mistaken that time is a mess in the universe as a certain portion of space time seems to be far different or perhaps apart. Just like the so-called well known theory about using twins. As one twins is sent in space to travel forth and back, it seemed that it never aged much compared to it's twin brother who is still living on Earth. This however I believe is connected to the Bell's theory as once I debated with my friend about when you shoot a bullet in space, the bullet will stop at a certain place though as you all know that bullets that are shot on mass vacumm is supposingly in theory that it will travel without anything slowing it down but remained at a constant velocity. Of course the bullet shooting thing in space actually is kinda of a theory thing and not made practical. About the black holes... we aren't actually sure that time actually stops or break down inside the black hole since it's rather based on Stephen's or the other researcher's theory. Black hole I think is a rather different story as I remembered that black hole is actualy because of gravity failing. But I guess if you use equaibrilium theory... what is created by the Dark Matter must be returned to the Dark Matter and Balck hole is the right canidate for the job. Hope that helps.  |
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Re: A thing I've wondered about time.
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by
on 2006-09-22 22:15:52 |
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@Katsuomori: you need to actually GO TO SCHOOL and LEARN about this stuff before you spread your opinions, misconceptions, and poor grammar around. 1. Shakespere is not a physicist, so his postulates are herein disregarded. 2. Time does exist, if by "exist" you mean the classical definition of being whereby it is observed and agreed upon by all. You might argue that in different reference frames, people would disagree on the measure of time. This shows that time can vary from observer to observer, just like space. Despite this fact, people never seem to claim SPACE does not exist! Time exists. Deal with it. 3. If you shoot a bullet into space out of a regular gun, it will not escape the atmosphere, because gravity will pull it back down to earth. In fact, people have been accidently killed by morons this way!
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