Posted: Mar 01, 2011 2:04 pm
by twistor59
hackenslash wrote:It might be worth explaining why '-'dx2, etc, in other words explaining why the minus solution is employed rather than the plus. That makes the math more understandable, I reckon. It's how I got how Minkowski spacetime works.

Since all my d(spatial coordinate) 's vanished, I didn't bother !