Meaning of Eötvös experiment

Eöt'vös exper'iment

Pronunciation: (ut'vush, et'- Hung. œt'vœsh), [key]
— Physics. Physics.
  1. an experiment to confirm that all materials respond equally to gravity and that gravitational mass and inertial mass are equivalent. Cf. equivalence principle.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.