ToolHub

General Relativity

Explore geodesic dynamics, black-hole length scales, and gravitational-wave estimates with interactive charts and stepwise outputs.

Use Cases

  • - Compare characteristic black-hole radii for given mass scales
  • - Estimate orbital periods in compact-object scenarios
  • - Quick strain/frequency back-of-envelope wave checks
  • - Educational walkthrough for GR approximations

Core Relations

  • r_s = 2GM / c^2
  • r_photon = 3GM / c^2
  • f ~ sqrt(G(M1+M2)) / (pi*a^(3/2))
  • h ~ 4(GMc)^(5/3)(pi f)^(2/3) / (c^4 d)
Calculation History