Other > Random Ranting

Time Travel

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Tea-cup:
@Mercy

I was talking about going in a circle around the earth at 1/3 of the lightspeed.

If you know some physics, then you probably know that going in a circle requires a force. And a force gets a reaction. (newton) And a force needed to have an object as big as the human body in a circular path around the earth at 1/3 of the lightspeed would be gigantic. (probably more than enough to lift a block of flats out of the atmosphere). The reaction force that works on you body, having the same size (opposite direction), and makes you as thin as a pancake (if not worse). Healthy :P

Btw, I can calculate these things, but as well I can make a mistake in my reasoning. Feel free to correct me.

Going in a straight line will only give a force when you accelerate, but again, if you don't like to get reduced to a bloody pancake, that acceleration may not be too high. To get 1/3 of the lightspeed you probably will have to accelerate a long time, and use an insane amount of energy to do this. And if I remeber Einsteins his theory well, then how faster you go, how more force is needed to have the same acceleration. You gain mass. (this might only be true near to lightspeed, can't remeber well) Finally this would rezult in a very small acceleration I think. As well because the drive probably won't meet the requirements, as the fact that you probably would try to avoid pancakes when your mass gets higer because the speed you're moving with. (how more mass, how bigger a force gets with a given acceleration, pretty much a reazon why you never will get lightspeed)

And then you have to slow down, and speedup back to the earth, and slow down again. (crashing to get back to zero isn't a option I bet) I doubt if this is something you can do in a lifetime, and if you would preserve yourself to survive it. Then you can as well stay on the earth and just wait. (or sleep, depending on what you would use)

This isn't anything for the near future anyway. And busy as mankind is now, this probably will never be possible.

About what Carl Sagan says, more specific, about those wormholes,

I wouldn't know what kind of energy would be needed to make something like that big enough to get a human trough it. If the human not just gets reduced to the parts an atom is made of to start with when it enters the hole. (how you enter anyway) Some physicists suggested the use of blackholes. But I think (who I'm I :P) that means something like going to a extended version of the pancake story. I wouldn't like to get packed together into a space smaller than an atom.

I would try to use those theorys to upgrade and reduce the latency between the communication connections from continent to continent, that seems me something realizable in the far furture (you only have to move electrons, not whole atom structures), and actually, it's something more usefull that doing suicide attempt in the hope of doing space or timetravels.

I love science, and I really need to learn more, guess why I posted that "Lower activity from my side." topic.

And again, feel free to correct or add things, I'd love to see them.

@Mo
You can argue about scientific facts, it wouldn't be the first time that something gets proven as being false or not correct. Like the laws of newton for example, those aren't correct when you look inside and atom or when you get close to lightspeed.

-Mel

Mo:

--- Quote ---@Mo
You can argue about scientific facts, it wouldn't be the first time that something gets proven as being false or not correct. Like the laws of newton for example, those aren't correct when you look inside and atom or when you get close to lightspeed.

-Mel
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--- End quote ---

Newton never conducted experiemts on atoms nor did he have a particle accelerator.
Everything I mentioned has been proven via experimentation aboard the space shuttle.

The space shuttle travels very fast, clocks have been obvserved to have slowed down in accordance with time dialation.

Tea-cup:
@Mo
And now I say, that they can't make clocks well enough to measure it correctly :D
(joking)

--- Quote ---You can argue about scientific facts, it wouldn't be the first time that something gets proven as being false or not correct. Like the laws of newton for example, those aren't correct when you look inside and atom or when you get close to lightspeed.
--- End quote ---
I didn't say that specific to your earlyer post, just in general. And for that example of newton, it's not because he can't look into the atoms (hey we still can't really see in it you know, we use ways around for it), that his theory isn't proven wrong in some situations. And they still teach it and use it because it is correct as long you don't have certain extremes.

And newton at least could see how it was, if you talk about timetravel or wormholes, then I'm sure the poeple talking about it, didn't see it. They just speculate useing the theorys like they exist now.

-Mel

420:

--- Quote ---This subject will go in circles as it did when it was taking place on GodSpire. All these theories people desperately want to believe but nobody is currently sure on whats right to believe. I say we just throw this subject in the toilet and move on.
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Well, if you look at the last question on that Carl Sagan link, you'll see that one could say that simply by discussing the possibilities and limitations of time travel we are in fact taking part in the conceptual stage of development. The technology used for time travel would have to be so advanced that those temporal scientists of the future would look back at this thread as a ground breaking conceptual thesis!

Stick that in your pipe and smoke it!

-420

Wobbles:

--- Quote ---Time isn't time.

If it were there, and time travel were possible, nothing would exist because SOMEONE throughout the course of history would go back and kill everything before it happened but they'd be dead before they could make it happen and all that nifty stuff.
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Case pwned. Shaddup.

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