The New Encyclopaedia Britannica, Volumes 1-10Encyclopaedia Britannica, 1974 - Reference [1] Propaedia: outline of knowledge and guide to the Britannica.--[2]-[11] Micropaedia: ready reference and index.--[12]-[30] Macropaedia: knowledge in depth. |
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Page 291
... measurements that have been made are relative ; that is , they measure only the differences be- tween gravity -values at various places . In tribute to Galileo the unit gal ( equivalent to 1 cm / sec2 ) has been adopted as the unit of ...
... measurements that have been made are relative ; that is , they measure only the differences be- tween gravity -values at various places . In tribute to Galileo the unit gal ( equivalent to 1 cm / sec2 ) has been adopted as the unit of ...
Page 292
... measure of g . Modern gravity meters may have sensitivities greater than 0.005 mgal , the standard deviation of observations in exploration surveys being , in the best performance , of the order of 0.01-0.02 mgal . Differences in ...
... measure of g . Modern gravity meters may have sensitivities greater than 0.005 mgal , the standard deviation of observations in exploration surveys being , in the best performance , of the order of 0.01-0.02 mgal . Differences in ...
Page 293
... measuring G , though Michell died before the apparatus was completed . The first reliable measure- ment of G was carried out by Cavendish in 1798 with a torsion balance of the Michell type . Figure 1 shows schematically the method used ...
... measuring G , though Michell died before the apparatus was completed . The first reliable measure- ment of G was carried out by Cavendish in 1798 with a torsion balance of the Michell type . Figure 1 shows schematically the method used ...
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The New Encyclopaedia Britannica, Volumes 1-10 Encyclopaedia Britannica Publishers, Inc. Staff No preview available - 1974 |
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