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ASTRONOMIC HORIZON [1 record]

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Record 1 1977-09-06

English

Subject field(s)
  • Astronomy
OBS

[The astronomic horizon is] A great circle on the celestial sphere formed by the intersection of the celestial sphere and a plane passing through any point (such as the eye of the observer) and perpendicular to the zenith-nadir line; the plane that passes through the observer's eye and is perpendicular to the zenith at that point.

French

Domaine(s)
  • Astronomie
OBS

Le grand cercle de la sphère céleste (...) dont le plan est perpendiculaire à la verticale s'appelle "horizon astronomique" ou "rationnel".

Spanish

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