enow.com Web Search

  1. Ad

    related to: map of the prime meridian
  2. bedbathandbeyond.com has been visited by 100K+ users in the past month

Search results

  1. Results from the WOW.Com Content Network
  2. Prime meridian - Wikipedia

    en.wikipedia.org/wiki/Prime_meridian

    A prime meridian is an arbitrarily -chosen meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great circle. This great circle divides a spheroid, like Earth, into two hemispheres: the Eastern ...

  3. Prime meridian (Greenwich) - Wikipedia

    en.wikipedia.org/wiki/Prime_meridian_(Greenwich)

    The Greenwich meridian is a prime meridian, a geographical reference line that passes through the Royal Observatory, Greenwich, in London, England. [ 1] From 1884 to 1974, the Greenwich meridian was the international standard prime meridian, used worldwide for timekeeping and navigation. The modern standard, the IERS Reference Meridian, is ...

  4. List of principal and guide meridians and base lines of the ...

    en.wikipedia.org/wiki/List_of_principal_and...

    Figure 1. This BLM map depicts the principal meridians and baselines used for surveying states (colored) in the PLSS.. The following are the principal and guide meridians and base lines of the United States, with the year established and a brief summary of what areas' land surveys are based on each.

  5. Meridian (geography) - Wikipedia

    en.wikipedia.org/wiki/Meridian_(geography)

    Meridian (geography) Meridians run between the North and South poles. In geography and geodesy, a meridian is the locus connecting points of equal longitude, which is the angle (in degrees or other units) east or west of a given prime meridian (currently, the IERS Reference Meridian ). [ 1] In other words, it is a line of longitude.

  6. Royal Observatory, Greenwich - Wikipedia

    en.wikipedia.org/wiki/Royal_Observatory,_Greenwich

    This old astronomical prime meridian has been replaced by a more precise prime meridian. When Greenwich was an active observatory, geographical coordinates were referred to a local oblate spheroid called a datum known as a geoid, whose surface closely matched local mean sea level. Several datums were in use around the world, all using different ...

  7. Meridian (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Meridian_(astronomy)

    Meridian (astronomy) The meridian on the celestial sphere. An observer's upper meridian, a semicircle contains their zenith and both celestial poles; the observer's local meridian is the semicircle that passes through their zenith and the north and south points of their horizon. In astronomy, the meridian is the great circle passing through the ...

  8. Hemispheres of Earth - Wikipedia

    en.wikipedia.org/wiki/Hemispheres_of_Earth

    The division of Earth by the Equator and the prime meridian Map roughly depicting the Eastern and Western hemispheres. In geography and cartography, hemispheres of Earth are any division of the globe into two equal halves (hemispheres), typically divided into northern and southern halves by the Equator and into western and eastern halves by the Prime meridian.

  9. History of longitude - Wikipedia

    en.wikipedia.org/wiki/History_of_longitude

    Eratosthenes in the 3rd century BC first proposed a system of latitude and longitude for a map of the world. His prime meridian (line of longitude) passed through Alexandria and Rhodes, while his parallels (lines of latitude) were not regularly spaced, but passed through known locations, often at the expense of being straight lines. [1]

  1. Ad

    related to: map of the prime meridian