ARISTOTLE ON UNIFORM CIRCULAR MOTION

Abstract

Uniform circular motion has an important role in Aristotle’s physical world. In this paper a correspondence is built up between: the unique state of being of necessary beings, which are ἀεί (eternally), outside time; the periodic sequence of identical states of uniform circular motion of the heavens, which are ἀεί (over and over again) moving in circle; the sequences of different states of change of sublunar bodies, which are ἀεί (always) changing, in time.