(Original post by polthegael)
Can anyone expalin two things to me about time, please?
1) Are there more than one temporal dimensions? If so, can anyone have a stab at explaining that in a way a fool like myself can understand?
2) It has been claimed (by Feynman) that antimatter is just ordinary matter but travelling the other way through time. How does that work?
This is incredebly advance stuff to be discussed in a forum like this.
The answer, on the other hand, is simple:"we're not quite sure, but we have many good theories."
1. I, being a fan of the string theory, would argue yes. It is hard to explain in a jiffy, but string theory predicts "branes", which is kind of like multidimensional pancakes (really!)
. These branes exists in many dimensions, up to (what was it again...?) 26 space dimensions and (probaby) 13 time dimensions. It is incredably hard to imagine more dimensions than that of which we live in, but try to think that you are a 2D cartoon. You wouldn't be able to notice the third room dimension would you? And the funny thing is that the safest safe in the whole 2D would could without effort be breached by a 3-dimensional being. In the same way can a 4D- being cross right through our world without us noticing.
2. The thing about antimatter travelling backwards in time sounds fishy. I'm not a specialist in the area, but i would argue that they are just regular particles with the opposite charge. Just because one mathematically deducts that a positron is equivalent to a electron travelling backwards in time, doesn't mean that they always do. And the spin thingy is about quarks, not leptons, in the sense of antimatter, I presume.
Don't kill me if I'm wrong, just wanted to play along with you gyus.