Question
This approach was first described in 1893 by Heaviside, who used it to show that gravity is consistent if it propagates at finite speed. For 10 points each:
[10h] Name this formalism of linearized general relativity. This formalism parameterizes the metric perturbation h in terms of the gravitational potential and a vector quantity proportional to h-sub-zero-i.
ANSWER: gravitoelectromagnetism [or gravitoelectromagnetic theory or GEM] (The vector quantity is the gravitational vector potential.)
[10m] Gravitoelectromagnetism analogizes this effect to Larmor precession. This effect is a result of frame-dragging from a rotating mass.
ANSWER: Lense–Thirring precession
[10e] An analogy to the Lorentz force gives the namesake equations for these paths in gravitoelectromagnetism. The world lines of free-falling objects follow these extremal paths in curved spacetime.
ANSWER: geodesics [accept geodesic equation]
<SH, Physics>
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