I MENTIONED in NATURE of December 1, 1923, p. 788, that Dr. F. A. Vening Meinesz, on board the Submarine K II of the Royal Dutch Navy, left Suez on October 31 to carry on his pendulum observations at ...
IT is a well-known fact that, at different places on the earth's surface and at the same sea-level, pendulums change their rates of swing. The numerous observations of von Sterneck, made in the region ...