- #1

- 23

- 1

## Main Question or Discussion Point

I've never seen a satisfactory explanation of the metrics used in a calculation of distance in Minkowski space. In Euclidean space, the distance is:

ds^2 = dx^2 + dy^2 + dz^2

But in Minkowski space, the distance is

ds^2 = (dt * c)^2 - dx^2 - dy^2 - dz^2

Why are the signs reversed? This implies that space (or time depending on your convention) is imaginary.

ds^2 = dx^2 + dy^2 + dz^2

But in Minkowski space, the distance is

ds^2 = (dt * c)^2 - dx^2 - dy^2 - dz^2

Why are the signs reversed? This implies that space (or time depending on your convention) is imaginary.