High School Nalini Joshi's Time Travel Ideas

[Tomwh98]

Hi everyone I'm a mild physics enthusiast but I wonder if people thought time travel was technically possible? And if Nalini's thoughts were sound on a scientific basis.

 

[PeroK]

That video isn't a valid basis for discussion. Closed timelike curves (CTC) (which would essentially allow a particle to return to a point in its past light cone) are not impossible. But, a lot of things aren't impossible, theoretically. So, until you have a realistic idea of how you might create a CTC, there's not much basis for discussion.

That said, there are some serious scientific articles on CTC's.

 

[Nugatory]

@PeroK is right, both that this video is not a good source under the forum rules and that there is more serious scientific discussion of CTCs. This thread is closed, but new threads based on those discussions (Googling for “closed timelike curves and the references in the Wikipedia article could be a good start) are welcome.