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Table of Contents
ОглавлениеSMITHSONIAN INSTITUTION UNITED STATES NATIONAL MUSEUM BULLETIN 240
DEVELOPMENT OF GRAVITY PENDULUMS IN THE 19th CENTURY
Kater’s Convertible and Invariable Pendulums
Repsold-Bessel Reversible Pendulum
Peirce and Defforges Invariable, Reversible Pendulums
Von Sterneck and Mendenhall Pendulums
Absolute Value of Gravity at Potsdam