Theory and Practice of Pendulum Observations at Sea

Delft: Waltman, 1929. First Edition.. Original publisher's cloth.. Very good.. Royal 8vo, viii, [1] - 95 pp. + 9 inserted half-tone photographic plates of the pendulum mechanism and optical recording device as well as numerous text illustrations.

Vening Meinesz is best known for his work in geophysics. The book offered here is the explanation of the testing and development of his ingenious apparatus for determining the differences in the acceleration of gravity. He is famous for this set of experiments and the discovery of gravitational anomalies that now bear his name. DSB XIII, 605-611.