MadSci Network: Physics |
Hi First off, my apologies for taking so long in answering. For a variety of reasons my access to the net has been broken for 4 weeks. I won't bore you with details as it is a long and complicated story. I am not sure that anyone has proven time travel is possible . A number of people have suggested how time travel may be accomplished but they are only very theoretical ideas at best with no real way of testing the theory. One of the more well known ideas is by Kip S. Thorne, which he discusses in his book "Black Holes and TimeWarps, Einsteins Outrageous Legacy". The basics are that you can stretch "wormholes" apart and travel through them instantaneously. If one end of the wormhole is taken a large distance away, to another star say, then due to an effect called time dilation you get an effective method of time travel. A word of warning though, we don't even know that wormholes do exist, if they do they are less than a millionth of a billionth, billionth, billionth's of a meter in size, or 0.000000000000000000000000000000001 meters. We don't know how to make them bigger, if they exist, we certainly don't know how to get them to other stars. One thing to be careful of is that a number of people, claiming to be scientists, claim to have invented time travel. If they have a working time machine then they have been unable to show it working to anyone. Basically it is wishful thinking. In general most respectable physicists do not believe that time travel is possible at all. If it was possible then all sorts of strange things would occur. As these strange effects are never seen it can be assumed time travel is not possible. As a wise man said "time is nature's way of making sure everything does not happen at once". IF you wish to discuss this further, and why time travel is not allowed please mail me. Yours. Dave Barlow.
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