- #1
pellman
- 683
- 6
A typical formulation of the Einstein equations is
R_{\mu\nu}-\frac{1}{2}Rg_{\mu\nu}+\Lambda g_{\mu\nu}=\frac{8\pi G}{c^4}T_{\mu\nu}
The \frac{G}{c^4} make the units work out. What about the 8*pi? Why is this necessary?
R_{\mu\nu}-\frac{1}{2}Rg_{\mu\nu}+\Lambda g_{\mu\nu}=\frac{8\pi G}{c^4}T_{\mu\nu}
The \frac{G}{c^4} make the units work out. What about the 8*pi? Why is this necessary?