714 



TABLES 802-807.— GRAVITATION * 



TABLE 802.— ACCELERATION OF GRAVITY 



For sea-level and different latitudes. Calculated from the International Gravity Formuia : 

 g — 978.0490 [1 + 0.0052884 sin 2 <t> — 0.0000059 sin 2 2 <t>] 



TABLE 803.— FREE-AIR CORRECTION OF ACCELERATION OF GRAVITY 



FOR ALTITUDE 



To reduce log g (cm per sec per sec) to log g (ft per sec per sec) add log 0.03280833 = 

 8.5159842— 10. 



The standard value of gravity, used in barometer reductions, etc., is 980.665. It was 

 adopted by the International Committee on Weights and Measures in 1901. It corresponds 

 nearly to latitude 45° sea-level. 



— 0.0003086 cm sec" 2 m" 1 when altitude is in meters. 

 —0.000003086 ft sec' 2 fr 1 when altitude is in feet. 



* Prepared under the direction of K. T. Adams, U. S. Coast and Geodetic Survey. 

 SMITHSONIAN PHYSICAL TABLES 



