Example image of eyePlorer eyePlorer map for 'Theoretical motivation for general relativity': Circular orbit Dynamics (physics) Einstein field equations Geodesic Special relativity A priori and a posteriori Curvature General relativity Matter Spacetime Principle of least action World line Inertial frame of reference Minkowski space Speed of light Lorentz scalar Fermi–Walker transport Kronecker delta Earth Polar orbit Ricci curvature Scalar curvature Simple harmonic motion Trajectory Covariant derivative Classical mechanics Lagrangian mechanics Newton's laws of motion Lagrangian Stress-energy tensor Gravitational constant Newton's law of universal gravitation Volume Christoffel symbols Vacuum solution (general relativity) Schwarzschild metric Exact solutions in general relativity Boundary value problem Covariant formulation of classical electromagnetism Maxwell's equations Electromagnetic tensor Four-current Levi-Civita symbol Einstein notation Ampère's circuital law Gauss's law Faraday's law of induction Gauss's law for magnetism Electromagnetic four-potential Lorenz gauge condition