Latitude exact relationship of parallels and meridians with horizontal and vertical: both are complicated curves. On the sphere the normal passes through the centre and the latitude () is therefore equal to the angle subtended at the centre by the meridian arc from the equator to the point concerned. If the meridian distance is denoted by then where denotes the mean radius of the Earth. is equal to . No higher accuracy is appropriate for since higher-precision results necessitate an ellipsoid model. With this value for the meridian length of 1 degree of latitude on the sphere is (60.0 nautical miles).
How Many Miles to Babylon? (novel) How Many Miles to Babylon? (novel) How Many Miles to Babylon? is a novel by Irish writer Jennifer Johnston, first published in 1974. The novel explores the relationship of two men, an Anglo-Irish aristocrat, Alexander Moore, and a lower class son of a labourer on his lands, Jerry, as they experience the First World War. The story is the complex tale of a friendship between two boys in Ireland prior to and during World War I. Alec, the son of Anglo-Irish parents grows up lonely and friendless on his parents' estate in Wicklow during the early years of the 20th