User:Elauminri/l/TiST0/02

Free style notes, loosely based on black holic musings of Leonard Susskind about string theory. Surrounding material can be found on the index page.

Special Relativity
Teh usual... most import part is that light moves in a frame where proper time dτ2=0 i.e. (cdt)2=dx2+dy2+dz2

General Relativity
Teh usual... space varying in space, doh[tm]. And the same rule ds2=0 for light.

It's the invariance which is import not the size of c.

Black hole metric

 * polar coordinates