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Post by chaman123 on Dec 3, 2006 12:13:58 GMT -5
Do you think time travel will be possible one day? Einstein thought so.
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Post by Wood Mega on Dec 17, 2006 14:53:30 GMT -5
I'm no expert on the subject, this is just my perspective based on stuff I've read on the subject.
Since each object travels through time independently of other objects, having an object travel forward in time may be possible. As an object moves more and more quickly, it also travels through "time" so to speak. Studies have been conducted with atomic clocks and some have been placed on vehicles and flown around the earth and compared to stationary atomic clocks on the ground, and the clocks in motion were slightly ahead of the other clocks.
Travel to the slight future may be possible, but I don't think time machines and stuff like that will ever work. You'd think we might have been visited by people from the future by now. =P
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Post by Wood Mega on Dec 19, 2006 0:18:32 GMT -5
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Post by Wood Mega on Dec 19, 2006 0:30:00 GMT -5
Found the article I was looking for. This one is more informational and has more to do with the subject of time travel. Check out einstein's phenomenal equations!! I have no idea what they mean, but they're complex. =P en.wikipedia.org/wiki/Time_dialationSo... travelling at high speeds takes an object through time "faster" than a slow moving or standing object. Here's an excerpt from the article. Time dilation would make it possible for passengers in a fast moving vehicle to travel into the further future while aging very little, in that their great speed retards the rate of passage of onboard time. That is, the ship's clock (and according to relativity, any human travelling with it) shows less elapsed time than stationary clocks. For sufficiently high speeds the effect is dramatic. For example, one year of travel might correspond to ten years at home. Indeed, a constant 1 g acceleration would permit humans to circumnavigate the known universe in one human lifetime. The space-travellers could return to earth billions of years in the future (provided the Universe hadn't collapsed and our solar system was still around, of course). A scenario based on this idea was presented in the novel Planet of the Apes by Pierre Boulle.
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Post by chaman123 on Jan 1, 2007 23:53:24 GMT -5
Yeah, I read similar articles before I posted this.
It's been proven that travel to the future is possible, just very difficult to do (to a useful extent that is) Being able to accelerate past light speed is something that seems pretty impossible, so being able to travel as little as an hour into the future would be an extremely difficult challenge.
However, that's just one kind of time travel, another kind is being studied by some scientist guy whose name I forgot. But the time travel that's been proven is a one way ticket to the future, this guy is studying a way to travel into the past, and back, or the future and back. Basically time travel like the movies.
Though you might think "Hey, this guy can't be right because there aren't future people everywhere." That might be right, but one thing people from the future couldn't do is alter the past. For instance, say you wanted to prevent world war II. SO you hop in your sweet DeLorean time machine and kill Hitler. Yay! No more world war II. But wait! since you stopped world war II from ever happening, you never had a reason to go back and prevent a war that never happened. So poof! World war II is back. It's called the grandfather paradox, and if there ever is a time machine, it can't be used to alter the past.
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Post by Wood Mega on Jan 3, 2007 17:41:27 GMT -5
It would seem that conventional fast er than lightspeed travel is impossible. Since increasing speed requires more energy, however, energy IS mass, and vice versa.(E=mc^2) So as it increases in speed, it increases in mass, and more mass requires more energy to move due to inertia. Say a van and a gokart are both going 5 MPH. It takes a LOT more energy to increase the van's speed to 10 MPH, and relatively little to increase the kart's to 10MPH. The problem with increasing an object to lightspeed is that the energy (and thus mass) required to accelerate such an ever increasing mass is exponential. It forms an assymptote( on a graph where it never quite touches the line, just gets closer infinitely), so you can't achieve lightspeed by normal means. This is a graph of an assymptote, not the lightspeed one.
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