Time travel?

[Metah]

To the idea that all governments would ban it: Sure. But then there's international waters, bahahaha.

[Khelek]

http://img.photobucket.com/albums/v4...nks-poster.jpg

[Jer]

Text ahoy. Reading through this again, I realized that near the end I started rambling a bit. Therefore text has been made tiny so that none wishing to get avoid eye damage may skip over. Those wishing to read can tell me I'm wrong.

Depending on how you envision time travel taking place also determines to a certain extent whether you believe it would be feasible. For instance, say you believe that time travel will occur using a machine with you in it much like what is most often used in stories and for the purposes of this example the machine would be run by a black box, we don't know what's inside but we do know that it works. So you're sitting in your present, go into the machine, and flip a switch and *poof* you disappear into space-time where you will go to your destination. Where would you come out? If you were to come out in the exact same spot in either the future or past, you might find a different greeting than the one that you expected. We all learn that the Earth orbits the Sun, the Solar System is in orbit in the Milky Way, and even the Milky Way itself is in motion throughout the universe. If the time machine does pop back into normal space-time at the same spot that it left, nothing around it (given enough time, past or future) would be the same, most likely it would appear out in empty space. Even if there is such a thing as momentum in the area you would travel through, you still wouldn't end up close to the place you exited (relative to the Earth) because of such things as orbits and the fact that once your mass enters space-time it is no longer subject to the Earth's pull. On the other hand, if your mass was still affected by the Earth's pull, the effect of speeding up the passage or abruptly reversing it all together would most likely have some dire consequences on you. But that of course is one of the reasons that we will invent inertial dampeners, :D and in this case there is nothing left to worry about. On the other hand it's also probably safe to assume that if we come to a point where we can actually make time travel occur at will, we'll also have the ability to shoot around the galaxy at a comfortable pace. Or if we can time travel, and since time and space are the same, you might be able to direct towards where you actually want to go while you are traveling through time.

But there's probably nothing to worry about, seeing as I remember a De Lorean making the trip a few times, and all we'll need is some plutonium or 1.21 jigowats from a passing lightning strike.

[Jer]

On a different note, does anybody remember John Titor? Guess he came from an alternate Earth seeing as the 2004 presidential elections didn't trigger another Civil War.

[Snowknight26]

Good ol' Titor.

[Khamsin]

On a different note, does anybody remember John Titor? Guess he came from an alternate Earth seeing as the 2004 presidential elections didn't trigger another Civil War.

They damn near did. The president that got the least number of votes (of the two major parties) got elected!

[Septimus]

What about anti-matter? It's been a while since I've had my Einstein classes, but wouldn't the vector of anti-matter be perpetually pointed to the past? (But only within the confounds of the speed of light like regular matter.)

Antimatter? Or matter that follow an opposite gravitational rule? The first one exist, while the 2nd is an hypothetical.

Antimatter is simply matter composed of anti-particles and follow normal physics law. All of them exist already, but they aren't common. To create antimatter, you replace the electron with positron, proton with antiproton and neutron by anti-neutron. The atoms you just created with the antiparticles works the same way, except the energy holding it together is negative instead of positive. It's like having a N + S magnet, instead of S + N. As long it's not 2 force that reject each other, it will work.

For gravity, the only thing that matter is mass, and anti-matter mass is equal to matter. It won't create anything special, and will bend space the same way.

I mean the kind made of positrons and what not. The way it was explained to me was that anti-matter experienced time in a reverse flow from matter. In fact, I remember someone once mentioning that someone hypothesized that matter and anti-matter didn't actually annihilate each other, but meet at a point in time where the one particle was (somehow) reversed into it's counterpart. (Ha ha! Take that Causality!)

But anyway, were that true, the vector of anti-matter would be constantly pointed into the past.

[Maguspk]

http://img.photobucket.com/albums/v4...nks-poster.jpg

I lol'd so hard!

[Kaylia]

I mean the kind made of positrons and what not. The way it was explained to me was that anti-matter experienced time in a reverse flow from matter. In fact, I remember someone once mentioning that someone hypothesized that matter and anti-matter didn't actually annihilate each other, but meet at a point in time where the one particle was (somehow) reversed into it's counterpart. (Ha ha! Take that Causality!)

But anyway, were that true, the vector of anti-matter would be constantly pointed into the past.

If there would be a time reversal under our current understanding, every particle would become an anti-particles. I believe that's what they meant when they say the vector is oriented in opposite direction. That doesn't mean they are going back in time or something like this, but again, there is still a lot of stuff we need to figure out concerning particles