## The physics of space and time III: Classification of space-time experiments and the twin paradox

Field, J. H.
##### Description
A nomenclature for inertial frames and a notation for space and time coordinates is proposed to give an unambigous description of space-time experiments in special relativity. Of particular importance are the concepts of base' and travelling' frames and primary' and reciprocal' experiments. A detailed discussion of the twin paradox is presented. The physical basis of the differential aging effect is found to be a relativistic relative-velocity transformation relation, not, as hitherto supposed, the spurious `length contraction' effect.
Comment: 60 pages, 18 figures, 2 tables. v2 velocity notation in Sect. 3 and 4 and figures improved. References updated
##### Keywords
Physics - General Physics