Gravitation By Charles W. Misner Kip S.: Thorne And John Archibald Wheeler

Darwin is the open source operating system from Apple that forms the base for macOS. PureDarwin is a community project that fills in the gaps to make Darwin usable.

Gravitation By Charles W. Misner Kip S.: Thorne And John Archibald Wheeler

Classic material: photon sphere, event horizon, Eddington–Finkelstein coordinates. Their discussion of “river model” of black holes is unique.

Quadrupole formula, TT gauge, energy flux. Still a benchmark.

The core: Riemann tensor, Bianchi identities, Einstein equation. Pay special attention to Box 14.5 (derivation from action principle).

Test Build

The PD-17.4 Test Build is a minimal system, unlike previous versions like PureDarwin Xmas with a graphical interface. It’s distributed as a virtual machine disk (VMDK) and runs via software like QEMU.

Due to the lack of proprietary macOS components, the community must develop alternatives, leaving elements like network drivers and hardware support incomplete. This build is intended for developers and open-source enthusiasts to explore Darwin development outside of macOS.

Based on Darwin 17, which corresponds to macOS High Sierra (10.13.x).

PD-17.4 Test Build

gravitation by charles w. misner kip s. thorne and john archibald wheeler

Classic material: photon sphere, event horizon, Eddington–Finkelstein coordinates. Their discussion of “river model” of black holes is unique.

Quadrupole formula, TT gauge, energy flux. Still a benchmark.

The core: Riemann tensor, Bianchi identities, Einstein equation. Pay special attention to Box 14.5 (derivation from action principle).