| 1. | Or any other orthogonal coordinates, or even general curvilinear coordinates.
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| 2. | Orthogonal coordinates never have off-diagonal terms in their metric tensor.
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| 3. | In 3D orthogonal coordinate systems are 3 : spherical.
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| 4. | In orthogonal coordinates in three dimensions it is represented as the 3x3 matrix:
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| 5. | For illustration, several examples in orthogonal coordinates are worked in the next sections.
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| 6. | :: So is it because of the orthogonal coordinate system that makes rectangles simpler?
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| 7. | In orthogonal coordinates is the angle the tangent to the geodesic makes with the-axis
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| 8. | In an orthogonal coordinate system the lengths of the basis vectors are known as scale factors.
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| 9. | The grid is rectangular, with a set number of orthogonal coordinates ( usually latitude and longitude ).
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| 10. | For the gradient in other orthogonal coordinate systems, see Orthogonal coordinates ( Differential operators in three dimensions ).
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