| 11. | There is also the concept of space curves of constant width, whose widths are defined by tangent planes.
|
| 12. | These, for planes sufficiently close to the tangent plane, intersect the surface to make convex plane curves.
|
| 13. | In turn the geodesic curvature determines how vectors in the tangent planes along the curve should rotate during parallel transport.
|
| 14. | The North, East, Down ( NED ) coordinates allow this as an alternative to the ENU local tangent plane.
|
| 15. | Conversely, given a curve on " S ", the tangent plane can be rolled along that curve.
|
| 16. | Thus tangent planes along a curve can be identified using the intrinsic geometry, even when the surface itself is not parallelizable.
|
| 17. | Hence " as straight as possible " can only mean " is a straight line " ( in the tangent plane ).
|
| 18. | The tangent plane for the black hole is also now the tangent plane between the most upper point on the down quark.
|
| 19. | The tangent plane for the black hole is also now the tangent plane between the most upper point on the down quark.
|
| 20. | If a surface does not have a tangent plane at a point, it does not have a normal at that point either.
|
