![](http://www.alamy.com/thumbs/6/6252C53E-DBC3-4D0D-AEC2-A4CD11C158BF/2D8TCPF.jpg)
HUNGARY - CIRCA 1991: stamp printed by Hungary, shows Lorand Eotvos and Torsion Pendulum , circa 1991
Size: 3000px × 3960px
Photo credit: © Sergey Nezhinkiy / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: 1991, aged, ancient, antique, balance, capillarity, clock, coulomb, demonstration, dynamics, envelope, eotvos, experiment, geodesy, gradient, gravitational, gravity, historic, hungary, instrument, invention, law, letter, lorand, magnetism, mail, mass, measuring, message, patent, pattern, pendulum, philately, physics, postage, postcard, postmark, professor, retro, rotation, seal, stamp, vintage