TTT, scientists hypothesize that time travel is possible. Through the use of worm holes, but there is a major problem worms holes are about a few nanometers across and only last for a few split seconds.
Here is a thread to discuss time travel and pose hypothetical questions.
Please don't cite wikipedia... because people like me edit it too..
If you really want to read about realitivity and Time travel, pick up Steven Hawking's book: The Universe in a Nutshell
The rationale for it being (according to Newtonian methods, that is) impossible to actually achieve c is because one becomes more massive (see above formula), such that in order to reach the speed of light, one would have to expend infinite energy even in an ideal system, which is impossible
yup, even going at near speed of light, the mass in the system because very large, thus requiring a greater amount of energy to power.
If anyone is interested in the various dimensions theorized to exist you should check out String Theory.
I believe they disproved string theory a little while ago (in september?)
Wormholes are a very nifty subject. The sheet of paper that you mentioned DDX I believe is Space-Time? As I hear it, it is theorized that gravity has the effect of creating dents in that sheet. More gravity equals deeper dents. I guess if you get enough gravity in one location you can create a dent that goes all the way to the other side of the universe, this idea of wormholes.
Where I'm lost is why it is theorized that there is some sort of other 'side' to time-space in the first place.
I understand the concept of gravity; I've studied its theoretical workings; in fact, this is a subject in which I am keenly interested. Why is it that time-space is U-shaped? How does gravity go through? Is there any evidence to support any of this beyond wild speculation?
On the topic of string theory: String theory has yet to be proven or disproved (last I heard) and is therefor assumed to be untrue.
To prevent any potential misunderstandings: I was not referring to your statements, DDX, when I stated that string theory was assumed to be untrue. I was rather referring to the scientific method, which says that anything unproven is assumed to be untrue.
To prevent any potential misunderstandings: I was not referring to your statements, DDX, when I stated that string theory was assumed to be untrue. I was rather referring to the scientific method, which says that anything unproven is assumed to be untrue.
OOO, I thought you were also on my side, I wanted to mainly correct myself.
Why is it that time-space is U-shaped? How does gravity go through? Is there any evidence to support any of this beyond wild speculation?
I'm not sure its U-shaped, but space-time is supposed to have bends and folds in it that theoretically allow you to travel across long distances without actually passing through the space in between.
A common example is if you have an ant on a newspaper. The ant sees his world as a long flat plane, no matter which direction he is orientated, either facing up a tree, on the underside of a leaf, or right side up on the ground. From the ant's "2-D" perspective there is no difference how he is positioned in the third dimension, because he can't observe it/understand how to move through it to his advantage.
Now like I said if you put him on the upper left hand corner of a newspaper page, if he wanted to get to the bottom right corner he would normally have to walk all the way across the page. However if you folded the newspaper so the two corners meet, he could instead cross to the lower right corner without passing through the length in between the two.
In effect he used third dimensional travel to accomplish a feat that would have been much more arduous in only two dimensions. That is why space-time is theorized to have folds. We can't see the bends and twists with our senses because they're limited to three dimensions, but they should exist.
As to why gravity has the effect of "going through to the other side" I remember hearing somewhere that high gravity fields have a unique effect of bending space-time, similar to bending the newspaper page for the ant.
I understand the concept of gravity; I've studied its theoretical workings; in fact, this is a subject in which I am keenly interested. Why is it that time-space is U-shaped? How does gravity go through? Is there any evidence to support any of this beyond wild speculation?
On the topic of string theory: String theory has yet to be proven or disproved (last I heard) and is therefor assumed to be untrue.
Well the earth is round, so do the people on the other side of the earth stand on their heads? NO! it is because the earth is so big that everything is relative to your surroundings. The Universe is so big, and gravity is not created within space itself, rather it is created by large bodies of matter.
