Are the phrases "Linearized gravity", "Linearized Einstein Field Equations", "GEM (gravitoelectrodynamics)", all referring to mathematically equivalent approximations of Einstein's full non-linear field equations?(adsbygoogle = window.adsbygoogle || []).push({});

If not, could someone tell me what order (in some rough sense) these would be listed in order of "approximating away" more terms from the full equations?

And is there any experimental data yet that let's us verify "strong field" GR as opposed to just weak field tests (ie. distinguish between the linear approximations and the full non-linear field equations)?

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# Linearized gravity / Linearized Einstein Field Equations / GEM

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