2007-10-22 16:56:58 · 13 answers · asked by Mercury 2010 7 in Science & Mathematics ➔ Astronomy & Space
skeptic. ...... most people are skeptic about such extreme ideas and feel they need to slap the dreamers back to the ground for some reason.
2007-10-22 17:18:52 · update #1
this is for all the skeptics out there
http://video.google.com/videoplay?docid=1761115054315123551&q=Ronald+Mallett&total=46&start=0&num=10&so=0&type=search&plindex=1
2007-10-22 17:21:34 · update #2
trippy....i can visualize this theory somewhat like this :
http://en.wikipedia.org/wiki/Image:Airplane_vortex_edit.jpg
additionally for this to work we need to start the machine ..right now
so that 299 years from now we can come back to the now?
2007-10-22 18:50:47 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Michael M makes a good point. Not only about positrons but -all- of the known anti-particles.
As far as moving a person or piece of equipment back in time.... There are a couple of solutions to the General Relativity eqquations that 'kinda sorta' make it look like it 'might maybe' could be done. But the amount of energy required (by those same solutions) would be several orders of magnitude greater than what is released by a supernova when it blows. Probably be a tricky bit of engineering to make that happen âº
Doug
2007-10-23 00:11:35 · answer #2 · answered by doug_donaghue 7 · 1⤊ 0⤋
What point in time do you want to go to?
Now imagine restoring the universe to that point. Pulling the galaxies closer together. Restoring supernova. Undoing tsunami, earthquakes, technological developments, drawing the photons emitted by stars back into them, undoing the fusion liberating solar energy...
The energy requirements for restoring the universe to some prior state would be prodigious.
Perhaps there is a short cut.
The faster you go, the slower times passes. The lorentz transform suggests time would stop/stretch to infinity at the speed of light. Of course, mass becomes infinite, infinite gravity--the universe collapses. We get one object to travel at light speed per universe...
If we could somehow skip accelerating beyond c, the lorentz transform ends up with a negative radical. This does not represent time flowing backwards, but instead imaginary time. We don't really know what that means.
There may be parallel universes on separate tracks. You could, perhaps, cross from one universe running our time to another one running at a slower rate of time, or stepped back a bit. Whether or not you could alter the timeline of that universe is an interesting question.
As for travelling back in time within our universe, the answer appears to be a reserved no. As others noted, quantum particle mathematics suggest particles may propagate backwards through time for very brief intervals. It is an elegant solution, whether or not it is actually "right." Ramping that effect up to the macrocosmic scale (molecules, rocks, you and I, trains, planets, galaxies) is probably unlikely.
2007-10-23 00:53:25 · answer #3 · answered by Anonymous · 0⤊ 0⤋
if you could create a wormhole (you're gonna have to use another 5 points for that!) and make one end travel at close to lightspeed while the other remains stationary then one end will have travelled forwards through time at a different rate to the other. so when you travel through you wolud be going back in time. but only up to as early as the wormhole was created.
2007-10-23 00:39:43 · answer #4 · answered by mmatt314 3 · 0⤊ 0⤋
I have a better question for you: If you see an inanimate object sitting there, how do you know if it's going through time at all? Maybe it is going backwards in time? Time doesn't really make that much difference.
2007-10-23 20:06:00 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Yes. There's this little chicken place that I have lunch at about once a week, great Hash Brown Casserole, decent prices, and not very crowded between 2:30 and 4pm......
Anyway..........
There's something there that is very disconcerting, on the wall..........
a backwards clock!
2007-10-23 00:57:26 · answer #6 · answered by Kentucky Dave 6 · 1⤊ 0⤋
An electron moves in one direction in an electric field and a positron moves in the opposite direction. Physicist Richard Feynmann postulated that the positron could simply be an electron moving backwards in time.
2007-10-23 00:06:27 · answer #7 · answered by Michael M 7 · 3⤊ 1⤋
Not to our current knowledge. I think it's theoretically possible though.
I wish my answer didn't automatically collapse, so I could ask the person who gave me a thumbs down to send me a message telling me what was wrong with my answer... If any one knows, please send me a message. Thanks!
Was some one just here to give every one a thumbs down???
2007-10-23 00:05:27 · answer #8 · answered by word 7 · 2⤊ 1⤋
A DeLorean!
2007-10-23 03:36:17 · answer #9 · answered by mithril 6 · 0⤊ 0⤋
at this point in time, time travel is an impossibility.
2007-10-23 00:05:01 · answer #10 · answered by gmnataku 3 · 1⤊ 1⤋