• Question: Do you believe in multi-dimension Theory?

    Asked by 346sptm39 to Angus, Christine, Guy, Hermine, Ollie on 6 Mar 2018.
    • Photo: Hermine Schnetler

      Hermine Schnetler answered on 6 Mar 2018:

      Not sure, however I think multi-dimension theory is worth pursuing.

    • Photo: Guy Rixon

      Guy Rixon answered on 6 Mar 2018:

      That’s deep. If you mean “do I believe that there are more than 3 dimensions of space”, the answer is “probably, but I don’t know”. Some of the fundamental theories of gravity (there are several different ones!) depend on there being more than 3 spatial dimensions: for example String Theory needs either 9 or 11, IIRC. If String Theory turns out to be the best description of the universe, then yes, I will believe in the extra dimensions. But that theory doesn’t make testable predictions (yet), so w’ve no idea if it’s a good theory or not.

    • Photo: Alexander Burke

      Alexander Burke answered on 6 Mar 2018:

      I’m not entirely sure what you mean by this question. If your question is: Do you believe that our universe has more than 3 dimensions then of course. An “event” that takes place in our universe has three spatial coordinates (where it happened) and a unique time coordinate (when it happened). Think about if you were to push a glass off a table, it physically will land on the floor at an associated time. This is an event in “spacetime” where “spacetime” is a model which glues together both space (3 dimensions) and time (1 dimension) together to give a 4-dimensional universe. In short, we live in a 4-dimensional universe. It doesn’t stop there though, the moment you start looking at “quantum theories of gravity” then people theorise that our universe is twenty-six dimensional! This is string theory. This is a really nice and fairly easy to understand article on string theory… have fun! http://www.nuclecu.unam.mx/~alberto/physics/string.html

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