Eötvös experiment

[ uht-vuhsh, et-; Hungarian œt-vœsh ]
/ ˈʌt vʌʃ, ˈɛt-; Hungarian ˈœt vœʃ /

noun Physics.

an experiment to confirm that all materials respond equally to gravity and that gravitational mass and inertial mass are equivalent.

Origin of Eötvös experiment

named after Roland Eötvös (1848–1919), Hungarian physicist, who first performed the experiment