Gravitation
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2007
...large, for ordinary calculations a value of 9.8 m/sec 2 , or 32 ft/sec 2 , is commonly used. Bibliography See A. S. Eddington, Space, Time and Gravitation (1920); J. A. Wheeler, A Journey into Gravity and Spacetime (1990); M. Bartusiak...