english:glossary:ellipsoid
Différences
Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentesRévision précédenteProchaine révision | Révision précédente | ||
english:glossary:ellipsoid [//24/10/2018 12:58//] – thomas | english:glossary:ellipsoid [//27/11/2018 09:43//] (Version actuelle) – thomas | ||
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===Ellipsoid=== | ===Ellipsoid=== | ||
- | The planet isn't a perfect sphere but presents a bumpy aspect with numerous irregularities. | + | The planet isn't a perfect sphere but presents a bumpy aspect with numerous irregularities.The notion ahead to address |
{{ : | {{ : | ||
+ | |||
+ | This one still does not smooth enough the irregularities of the Earth, the scientifics introduce ellipsoids:" | ||
+ | The ellipsoids are tangent to the surface of the globe and have two parameters: a parameter a (equatorial axis) and a parameter b (axis of the poles). There is not one but several ellipsoids. Each country has put one that best represents its territory: Ellipsoid of Clarke 1986 (North America), Ellipsoid International (Europe), Clarke 1880 (France). | ||
(sources Géoconfluences, | (sources Géoconfluences, | ||
Ligne 10: | Ligne 13: | ||
\\ See : [[english: | \\ See : [[english: | ||
+ | FIXME : Difference between Geoid and Ellipsoid |
english/glossary/ellipsoid.1540378718.txt.gz · Dernière modification : //24/10/2018 12:58// de thomas