Clocks and Chronogeometry: Rotating Spacetimes and the Relativistic Null Hypothesis

Tushar Menon, Niels Linnemann, James Read
2018 British Journal for the Philosophy of Science  
Recent work in the physics literature demonstrates that, in particular classes of rotating spacetimes, physical light rays in general do not traverse null geodesics. Having presented this result, we discuss its philosophical significance, both for the clock hypothesis (and, in particular, a recent purported proof thereof for light clocks), and for the operational meaning of the metric field.
doi:10.1093/bjps/axy055 fatcat:owfum7rexfakrdfoetwunk34xu