Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Scientists Say Time is Slowing Down

  1. Jan 21, 2008 #1


    User Avatar

    Spanish scientists have come up with a new hypothesis on to explain the rate of expansion of the universe: time is - literally - slowing down!


    As if that’s not mind-boggling enough, another scientist had proposed that time is actually two-dimensional:

    Time is no longer a simple line from the past to the future, in a four dimensional world consisting of three dimensions of space and one of time. Instead, the physicist envisages the passage of history as curves embedded in a six dimensions, with four of space and two of time.

  2. jcsd
  3. Jan 21, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper

    That's a nice article.

    Do you mind me being skeptical?
    At least, until they also manage to explain why all the theories we have up until now can describe and predict experiments to arbitrary precision while neglecting an entire dimension; how there can be four space dimensions while any experiment we do tells us there are actually three; and how we could ever measure the slowing down of time (it makes me think of the situation where you go to bed, and the next morning when you wake up the whole universe has scaled down by a factor of 100).

    Anyway, I admire his persistence to work on this for over a decade.
  4. Jan 31, 2008 #3
    If we indeed live in a 4 dimensional universe, then I would certainly entertain a look at a 2dimensional time explanation. I would question the alternative if it weren't for so many nifty equations that match experiments. Three independent spatial dimensions is not really consistent with the fact that information travels at a certain speed, and therefore one could not simultaneaously know about spheres of different radii if one were standing at the center. Time, one the other hand is the one true mystery - always has been. It is irrational in that we say it has no beginning and no end (continuous) yet it is also an interval (discreet). And all the equations do not rule out forward and reverse time, so if someone wants to take another stab at our concept of time, I'm all for it!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook