n an invisible line drawn around a spherical object at a right angle to the object's axis of rotation
(1) The central line of latitude, or parallel of reference "0°" which divides the Earth in half (2) In a spherical coordinate system, the great circle of a sphere which is perpendicular to the polar axis
Line around the ball, perpendicular to the midplane and the midline covering the entire circumference of the ball
An imaginary great circle around the earth, equidistant from the two poles, and dividing earths surface into the northern and southern hemisphere
The imaginary plane through the Earth which divides the northern and southern hemispheres See also: celestial equator
The great circle of the celestial sphere, coincident with the plane of the earth's equator; - - so called because when the sun is in it, the days and nights are of equal length; hence called also the equinoctial, and on maps, globes, etc
An imaginary circle around the Earth halfway between the North Pole and the South Pole; The largest circumference of the Earth
The Latitude reference point for the Lat/Long grid system Other positions of latitude are referenced as degrees of North Latitude if they are north of the equator and degrees of South Latitude if they are south of the equator Also see Latitude
This is the imagionary line that circles around the center of the earth and divides it into the northern hemisphere and the southern hemisphere Return to Regional Temperature Effects
The imaginary great circle on the earth's surface, everywhere equally distant from the two poles, and dividing the earth's surface into two hemispheres
A similar great circle on any sphere, especially on a celestial body, or on other reasonably symmetrical three-dimensional body
the geographic circle at 0 degrees latitude on the Earth's surface It is an equal distance from the North and South Poles and divides the northern hemisphere from the southern hemisphere