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Null Cones in Lorentz-Covariant General Relativity
bimetric causality principle null cones
2008/4/15
The oft-neglected issue of the causal structure in the flat spacetime approach to Einstein's theory of gravity is considered. Consistency requires that the flat metric's null cone be respected, but th...
Einstein’s Investigations of Galilean Covariant Electrodynamics prior to 1905
Covariant nvestigations
2008/4/11
Einstein learned from the magnet and conductor thought experiments how to use field transformation laws to extend the covariance to Maxwell’s electrodynamics. If he persisted in his use of this device...