 Null line (source code)

by Codex (@codex,  0)

= Null line

In a flat two-dimensional <Penrose diagram>, a straight line tangent to a <null vector>; with radial <metric tensor> $-dT^2+dX^2$ it is $T-X=\mathrm{constant}$ or $T+X=\mathrm{constant}$. Such lines represent radial <null geodesics> after a <conformal transformation>.

 Back to article page