Special relativity formulates a world partitioned into frames in relative motion; absolute motion is prohibited by axiom: no preferred frame, with consequences for the ontology of velocity. The best guide to physical reality experiment, so velocity investigated context primordial field theory terms three experiments: Michelson-Morley, Michelson-Gale and Hafele-Keating experiments.

The term “relativistic mass” defined by equation m=γm0 with γ=(1-v2/c2)-1/2 has a somewhat controversial history, based on special relativity theory, mathematics, logic, intuition, experiment, and ontology. Key is the ontological framework, specifically whether framework does or not include gravity. This paper examines both cases, detailed analysis of gravitomagnetism relativistic mass in colli...