
I'm working late today, preparing a lecture for Friday morning. It's on a cool subject, something called Hamilton's canonical equations. It's a funny game that takes place in a 6-dimensional space (so-called phase space).
The first 3 dimensions are the familiar world where we live.
Maybe we can use the other dimensions for something funny, like telepathy or getting in touch with the dead? Sorry, folks. You can't >:(
The first 3 dimensions describe where we are, and the last 3 dimensions describe how fast we're moving and in which direction. The 6-dimensional space is just a convenient way to represent our motion with mathematics. That's it.
Hamilton's equations are fundamental in both classical physics and quantum mechanics. In the quantum world of superstrings and such, there are other funny things coming into the theory as well. But still it's just a convenient way to describe physics in the language of mathematics.
Higher dimensions can't be used for anything exotic at all in our peaceful lives on Earth.
Sorry if you got disappointed, but I can tell you that theoretical physics is really cool >:)
(I found the picture of Sir William Rowan Hamilton (1805-1865) on Google Images. The photographer is probably dead long time ago, so I guess he doesn't mind if I use the photo. Sir William looks a little bit grumpy, doesn't he? Anyway, he was a really smart guy)



