Contributions from 

 The Museum of History and Technology: 



Paper 44 



Development of Gravity Pendulums in the 19th Century 

 Victor F. Lenten and Robert P. Multbauj 



GALILEO, HUYCENS, AM) NEWTON ^>1 



1 K.I RE OF THE EARTH 306 



EARLY TYPES OF PENDULUMS ?09 



kater's CONVERTIBLE AND INVARIABLE PENDULI Ms JI4 



REPSOLD-BESSEL REVERSIBLE PENDULUM 320 



PEIRCE AND DEFFORGES INVARIABLE REVERSIBL] PENDULI Ms J27 



VON STERNECK AND MENDENHALL PENDULI Ms J3I 



ABSOLUTE VALUE OF GRAVITY AT POTSDAM Ms 



APPLICATION OF GRAVITY SURVEYS J42 



SUMMARY 346 



