timospring
timospring
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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In astronomy, geography, geometry and related sciences and contexts, a direction passing by a given point is said to be vertical if it is locally aligned with the gradient of the gravity field, i.e., with the direction of the gravitational force (per unit mass, i.e. gravitational acceleration vector) at that point. In general, something that is vertical can be drawn from up to down (or down to up), such as the y-axis in the Cartesian coordinate system.
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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timospring · 11 years ago
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