Latitude ( or ). It is measured in degrees, minutes and seconds or decimal degrees, north or south of the equator. The precise measurement of latitude requires an understanding of the gravitational field of the Earth, either to set up theodolites or to determine GPS satellite orbits. The study of the figure of the Earth together with its gravitational field is the science of geodesy. This article relates to coordinate systems for the Earth: it may be extended to cover the Moon, planets and other celestial objects by a simple change of nomenclature. The graticule is formed by the lines of
Dell Latitude Dell Latitude Latitude is Dell's business laptop brand, designed and manufactured mainly by Compal and Quanta. The Latitude competes with the ThinkPad series from Lenovo (formerly IBM), the EliteBook series from HP and Travelmate series from Acer. The "Rugged (Extreme)", "XFR" and "ATG" models compete primarily with Panasonic's Toughbook line of rugged computers. The Dell Latitude is a laptop family from Dell Computers, intended for business use. By contrast, the Dell Inspiron is aimed at the consumer market and its specifications change regularly. Whereas Inspiron may change vendors or components several times over the course of a single model, the