Re: Photons in other dimensions

[Larry Smith <larry.smith@SNOW.EDU>]

At 9:37 PM -0400 4/15/04, Hugh Logan wrote:

> The Kaluza-Klein theory was largely forgotten until the fairly recent
> advent of string theory, of which it was a predecessor. Earlier versions
> of string theory had something like 26 dimensions, but it was shown that
> 10 dimensions could do just as well.

My understanding (very limited) is that we need one more (total of 11) in
order to make the 5 versions of string theory unify into one M-theory.

> According to fairly recent developments in string theory, there are
> subspaces within the nine spatial dimensions of string theory caled
> branes, which can have dimensios 1, 2, ... up to 9. A one dimensional
> brane would be a point, a 2-d brane would be a membrane,

Wouldn't one dimensional be a line or string?

Larry