bn:12663300n
Noun Concept
Categories: Geodesy
EN
horizontal plane  geographic plane  horizontal
EN
In physics, astronomy, geography, and related sciences, a plane is said to be horizontal at a given point if it is perpendicular to the gradient of the gravity field at that point – in other words, if apparent gravity makes a plumb bob hang perpendicular to the plane at that point. Wikipedia
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EN
In physics, astronomy, geography, and related sciences, a plane is said to be horizontal at a given point if it is perpendicular to the gradient of the gravity field at that point – in other words, if apparent gravity makes a plumb bob hang perpendicular to the plane at that point. Wikipedia
Plane perpendicular to the gradient of the gravity field Wikidata
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