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Title: Theory and practice of pendulum observations at sea.
Description: Delft, Technische Boekhandel en drukkerij Waltman Jr., 1929. 4to. W. 9 pls. Some diagrs. in the text. Original green publ. cloth. (VII, 95, I (Blank) pp.). (Laid in a letterpress compliment card 'Aangeboden door de Rijkscommissie voor Graadmeting en Waterpassing' / 'Envoi de la commission Géodésique Néerlandaise'). First part. A second volume was published in 1941. DSB vol. XIII, pp. 605 - 611: Vening Meinesz' first measurement of gravity in the Netherlands confronted him with what appeared to be an insurmountable obstacle. At many stations it proved impossible to find stable support for the pendulums; the continuous vibration of the peaty subsoil would lead to unaccdeptable errors in the results. Vening Meinesz' efforts to overcome this difficulty were typical of the manner in which he confronted a problem. ..., he started with a thorough theoretical investigation embodied in his doctoral dissertation 'Bijdragen tot de theorie der slingerwaarnemingen (1915)...While working to solve the problems of unstable support, V.M. was tempted to direct his efforts more boldly to the apparently overambitious plan of measuring gravity at sea. In his 'Theory and practice of Pendulum Observations at sea', he again began with the first equations of motion for two pendulums affected by the same horizontal accelerations....A shipboard attempt proved a complet failure...The first voyage to measure gravity at sea, from the Netherlands to Java in 1923, ...a cruise from Holland to Egypt to test the new apparatus (1925) gave satisfactory results...': A very good copy.

Keywords: physics Zeewezen gravitation navigation Toon geodesy geophysics

Price: EUR 240.00 = appr. US$ 260.84 Seller: Antiquariaat B.M.Israel B.V.
- Book number: 440