Word Origin and History for nexus Expand. n. 1660s, bond, link, means of communication, from Latin nexus that which ties or binds together, past participle of nectere to bind, from PIE root *ned- to bind, tie (see net (n.)).
Latitude is an angle (defined below) which ranges from 0Â° at the Equator to 90Â° (North or South) at the poles. Lines of constant latitude, or parallels, run east-west as circles parallel to the equator. Latitude is used together with longitude to specify the precise location of features on the surface of the Earth.he reduced or parametric latitude, Î², is defined by the radius drawn from the centre of the ellipsoid to that point Q on the surrounding sphere (of radius a) which is the projection parallel to the Earth's axis of a point P on the ellipsoid at latitude.
The equator is zero degrees, the North Pole is 90 degrees north, and the South Pole is 90 degrees south, and in between is in between. Parallels, otherwise known as latitude lines, are lines that run across the Earth from east to west at a constant latitude. Everywhere on a parallel must have the same latitude. Your latitude can be calculated by measuring the angle of the sun. At the middle of the day on the equinox (when day and night are the same length) the angle of the sun below an upright line (a line straight up above your head) tells you your latitude.