Magnet Academy: Roland Eotvos

Vasarosnamenyi Baro Eotvos Lorand, better known as Roland Eotvos or Lorand Eotvos throughout much of the world, was a Hungarian physicist who is most recognized for his extensive experimental work involving gravity, but who also made significant studies of capillarity and magnetism. He employed an instrument of his own design commonly referred to as the Eotvos balance to make extensive measurements, ultimately demonstrating to a much higher degree of accuracy than had been ever achieved before that gravitational mass and inertial mass are equivalent.