Time machines: looking more probable?
Ori's latest research suggests time machines are possible without exotic matter, eliminating a barrier to time travel. His work begins with a donut-shaped hole enveloped within a sphere of normal matter.
"We're talking about these closed loops of time, and the simplest kind of closed loops are circles, which is why we have this ring-shaped hole," Ori explained.
Inside this donut-shaped vacuum, space-time could get bent upon itself using focused gravitational fields to form a closed time-like curve. To go back in time, a traveler would race around inside the donut, going further back into the past with each lap.
"The machine is space-time itself," Ori said. "If we were to create an area with a warp like this in space that would enable time lines to close on themselves, it might enable future generations to return to visit our time."
Ori emphasized one significant limitation of this time machine—"it can't be used to travel to a time before the time machine was constructed." His findings are detailed in the Aug. 3 issue of the journal Physical Review D.
http://news.yahoo.com/s/livescience/20070820/sc_livescience/timetravelmachineoutlined
Fascinating. I like the idea that as soon as the time machine is constructed, individuals from future generations start popping out one by one. Hopefully one will be a muscular cyborg who can't be reasoned or bargained with, and will not stop until we are dead.
I can't help but think that I've heard of this concept for a time machine before. Oh yeah, it was a movie called Primer. We all know how well that time machine worked out for those guys, right? Right?
"We're talking about these closed loops of time, and the simplest kind of closed loops are circles, which is why we have this ring-shaped hole," Ori explained.
Inside this donut-shaped vacuum, space-time could get bent upon itself using focused gravitational fields to form a closed time-like curve. To go back in time, a traveler would race around inside the donut, going further back into the past with each lap.
"The machine is space-time itself," Ori said. "If we were to create an area with a warp like this in space that would enable time lines to close on themselves, it might enable future generations to return to visit our time."
Ori emphasized one significant limitation of this time machine—"it can't be used to travel to a time before the time machine was constructed." His findings are detailed in the Aug. 3 issue of the journal Physical Review D.
http://news.yahoo.com/s/livescience/20070820/sc_livescience/timetravelmachineoutlined
Fascinating. I like the idea that as soon as the time machine is constructed, individuals from future generations start popping out one by one. Hopefully one will be a muscular cyborg who can't be reasoned or bargained with, and will not stop until we are dead.
I can't help but think that I've heard of this concept for a time machine before. Oh yeah, it was a movie called Primer. We all know how well that time machine worked out for those guys, right? Right?
posted by O.C. Mike at
9:56 AM
0 Comments:
Post a Comment
Subscribe to Post Comments [Atom]
<< Home