Creating a Time Machine: Can it be Done?

In summary, time travel to the past is theoretically possible but would require exotic inputs that have not been observed. It also raises philosophical and logical concerns about preserving causality. On the other hand, traveling to the future is somewhat feasible according to Relativity, as demonstrated by the concept of time dilation. However, there is no known way to return to the present after traveling to the future.
  • #1
ritwik06
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Can we ever create a time machine?:!)
 
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  • #2
Travelling back in time, in theory, requires exotic inputs - like imaginary [mathematically speaking] matter and energy. Given evidence of their existence has not been observed, it appears to be an unphysical consequence of GR. From a more philosophical / logical persective, I think reverse time travel would eternally preclude a 'chrononaut' from returning to his/her original time line. This would be necessary to preserve causality, IMO.
 
  • #3
Travelling forward in time, however, is sort of feasible based on Relativity. Just travel really fast for a while (like on a spaceship) and when you return, you'll see that time on Earth will have moved faster than it did for you. The faster you go, the farther into the future you can visit. No way to return though.
 

Related to Creating a Time Machine: Can it be Done?

1. What is a time machine?

A time machine is a hypothetical device that would allow an individual to travel through time, either to the past or the future.

2. Is it possible to create a time machine?

At this point in time, there is no scientific evidence or technology that supports the existence of a time machine. While there are theories and ideas about time travel, they are purely speculative and have not been proven to be possible.

3. What are some of the challenges in creating a time machine?

One of the main challenges is the concept of causality, which states that an event cannot occur before its cause. Time travel could potentially create paradoxes and disrupt the natural flow of time. Additionally, the energy and technology required to manipulate time on such a scale is currently beyond our capabilities.

4. Are there any real-life examples or evidence of time travel?

No, there is currently no scientific evidence or real-life examples of time travel. Some people have claimed to have traveled through time, but these claims have not been scientifically proven.

5. What are some potential implications of time travel?

If time travel were possible, it could have significant consequences on our understanding of the universe and our place in it. It could also raise ethical and moral questions about altering the past and potentially changing the course of history. Additionally, it could have a major impact on the concept of free will and the idea of a predetermined fate.

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