Remarks on Gravitational Relativity¹

Abstract

WHEN we come to the more general theory, which attends to the acceleration and not merely the velocity of the observer, I find myself in disaccord on some points with many eminent exponents, chiefly in connection with their abolition of the idea of “force,” and the consequent replacement of gravitation by a modified geometry; as if the earth's natural motion was in a hypocycloidal sort of spiral, and was not under compulsion by any deflecting force.