The coordinate speed of light relative to its speed at infinity is calculated as (1-2M/r)c (at infinity) yes??(adsbygoogle = window.adsbygoogle || []).push({});

SO it makes sense that local measurements made with local rulers and clocks which are contracted and dilated respectively would still be c for radial measurements.

But how does that work with tangential measurements where the clocks are dilated but the distance ruler is not???

Thanks

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# Local c in Sc coordinates.

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