The Naked Scientists

The Naked Scientists Forum

Author Topic: Time travel  (Read 1056 times)

Offline blyth courtney

  • First timers
  • *
  • Posts: 1
    • View Profile
Time travel
« on: 03/07/2015 12:51:56 »
The word time is a concept created by humans to allow a better understanding of how things work, this means that there is no such thing as time traveling back in time or forward in time but you can still travel to what we would call the past/or future this is because each individual thing we do creates a new universe, parallel universe, pocket universe. I can use the string theory for example, there is more than one universe creating a string of universes some could be parallel or pocket universes with there being a new pocket universe created every time anything happens allowing us to travel to that pocket universe which is our past, and if time itself is not relevant then there are already pocket universes which contain our future.


 

Offline PmbPhy

  • Neilep Level Member
  • ******
  • Posts: 2762
  • Thanked: 38 times
    • View Profile
Re: Time travel
« Reply #1 on: 03/07/2015 19:25:01 »
Quote from: blyth courtney
The word time is a concept created by humans to allow a better understanding of how things work, ...
That is quite incorrect. The word time was created by humans to give a name to a real physical phenomena. So that you have the correct understanding of what time really is, i.e. as used by physicists, see:
http://users.wfu.edu/brehme/time.htm

Quote from: blyth courtney
...this means that there is no such thing as time traveling back in time or forward in time
Wrong. It means no such thing.
 

Offline scotty stull

  • Jr. Member
  • **
  • Posts: 27
    • View Profile
Re: Time travel
« Reply #2 on: 24/07/2015 03:58:57 »
Time can not be reversed, with respect to our own size we have a time rate. Size and time continue through out infinity, time can be speeded up or slowed down via a change in size. If you were looking at a clock and the atoms in your body were becoming smaller would the time rate on that clock appear to be moving slower?
 

Offline PmbPhy

  • Neilep Level Member
  • ******
  • Posts: 2762
  • Thanked: 38 times
    • View Profile
Re: Time travel
« Reply #3 on: 24/07/2015 08:55:03 »
Quote from: scotty stull
Time can not be reversed, ...
There's no reason to assume that's true. The possibility of time travel is an open question at this point. Time travel is related to what's called Closed Timelike Curves. See: https://en.wikipedia.org/wiki/Closed_timelike_curve

Kip S. Thorne from Caltech wrote a paper on this. He's one of the leading experts in this area. See: http://www.its.caltech.edu/~kip/scripts/ClosedTimelikeCurves-II121.pdf

If Hawking is right and there's a chronology protection mechanism in place in the laws of nature then time travel is impossible.

Quote from: scotty stull
...with respect to our own size we have a time rate.
What does our size have to do with any of this?
 

Offline scotty stull

  • Jr. Member
  • **
  • Posts: 27
    • View Profile
Re: Time travel
« Reply #4 on: 28/07/2015 03:38:55 »
PmbPhy                                                                                          To answer your question " What does our size have to do with any of this"?                We perceive the size of a object as being different from our own size, that is if we can see a difference in size. If our size is the same size as another object this "same size object" can never be exactly the same size as our own size because of infinity. Size is of course a result of a measurement and so is time. In order to be able to measure a small difference between the size of two objects of the same size, you will need a tool that can measure this small difference, also measuring time is no different. Accuracy depends on how small the tool is able to break down a measurement. When measuring time, greater accuracy depends on how many cycles per second that can be detected. Now if you were to shrink your self small enough to stand on a electron and this electron was liken to the earth would you not be in a different time frame as "compared" to your original size? Lets say that when you are standing on that earth-like-electron and this electron is exactly like our earth and with all things being equal would time be the same? The difference between two different sized objects creates a measurable size differential and the volume of which is the inside of the object ( space time ). One of the different sized objects will see the out side of the other object in a different time frame ( size and time ). Also both objects will have a gravitational effect on each other, even if both objects are of the same mass. ( Newton's law of universal gravitation ).
 

The Naked Scientists Forum

Re: Time travel
« Reply #4 on: 28/07/2015 03:38:55 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums
 
Login
Login with username, password and session length