What are meridians
Meridianwhen it works like nouncan refer to the imaginary line that passes through the two poles of the Earth, forming a circle that runs through the entire Earth’s sphere. Likewise, they are also called meridian each of the semicircles that go from one pole to the other of the globe.
As such, in the area of Geography, the functions that the meridians fulfill are several. On the one hand, they serve to calculate the different time zones in the planet. On the other hand, they allow determining the geographic longitude from every place on Earth, making it possible to calculate the location of anything on the planet.
In Geometrya meridian It can be defined as the line of intersection that passes through the axis of a spherical surface of revolution.
Finally, meridianwhen it works like adjective, refers to that belonging to or relating to noon: “Meridian time”. Likewise, it can be used to designate something that is considered very clear or very luminous: “He told me with clear frankness.” The word, as such, comes from Latin meridianuswhich means ‘relative to noon’.
See also Time zone.
Greenwich Meridian
In Geography, it is called Greenwich Meridian, or base meridian, zero meridian or first meridian, the one from which the degrees of geographical longitude of each place on the planet are counted on the Equator. Its name is due to the fact that the imaginary line of the 0° meridian that passes through the two poles of the Earth passes through the English town of Greenwich.
See also Longitude and Latitude.
Meridian 180
As 180th meridian or antimeridian is called one that forms, in relation to the Greenwich meridian, an angle of 180°. As such, the 180th meridian is used as the basis for determining the international date line.
See also Greenwich Meridian.
Meridian and parallel
The meridians and parallels They are the imaginary lines that serve to determine the degrees of geographical latitude and longitude. They differ in that the meridians are the circumferences that pass through both poles of the terrestrial globe, while the parallels are the smaller circles that are parallel to the equator line, and that serve as a basis for determining latitude.
See also Ecuador.
Meridian in astrology
In AstrologyOn the other hand, a meridian It is an imaginary line that passes through each of the poles of the planet, as well as the zenith and nadir of the reference point, tracing a circle that goes around the Earth’s sphere.