Graphical labs · Discrete lab (diagnostics on screen)
Schwarzschild orbits
Timelike geodesic + precession
d²u/dφ² + u = M/L² + 3Mu² (u=1/r) · G=c=1 · timelike, equatorial
Periapsis a(1−e) must stay > 2M. Precession is the GR 3Mu² term.
- r / M
- 16.8000
- φ (rad)
- 0
- L
- 4.00000
- V²(r)
- 0.930893
- Δω_analytic / rev
- 1.87000
Finite-difference / Monte Carlo / RK scheme at teaching resolution. Conserved quantities are diagnostics. FrameCalc is an educational workbench. It is not for medical, nuclear-safety, radiation-protection, or engineering sign-off. Fusion and IEC estimates are models, not device predictions. Accuracy · Legal