Tuesday, 21 February 2017

quantum mechanics - Why can't we break the speed of light in vacuum?



I was wondering what could be a possible reason/reasons because of which we cannot break the speed of light barrier. I was reading this where they stated that, Quantum Action Is 10,000 Times Faster Than Light.
I am not from a physics background, but if quantum particles interact faster than speed of light, why dont they go back in time?
(i had read it that if we can travel faster than the speed of light, we go back in time)


so my two questions are



  1. Why cant we break the speed barrier, is there a reason, or its just a fact that we have to accept?


  2. if quantum particles move faster than light, then why dont they travel back in time?


PS: i have read the possible duplicates, but i did not understand the possible reason for not being able to break the speed barrier.




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