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- Null_hypersurface abstract "In relativity, a null surface is a 3-surface whose normal vector is everywhere null (zero length with respect to the local Lorentz metric), but the vector is not identically zero. For example, light cones are null surfaces.An alternative characterization is that the tangent space at any point contains vectors that are all space-like except in one direction, in which vectors have a null "length". The metric applied to such a vector and any other vector in the tangent space (including the vector itself) is null. Another way of saying this is that the pullback of the metric onto the tangent space is degenerate.Physically, the tangent space at a given point on a null surface is space-like except that it contains one line corresponding to the world-line of a particle moving at the speed of light. For example, a light cone is a null hypersurface. Another example is a Killing horizon or the event horizon of a black hole.".
- Null_hypersurface wikiPageID "37663646".
- Null_hypersurface wikiPageLength "1467".
- Null_hypersurface wikiPageOutDegree "13".
- Null_hypersurface wikiPageRevisionID "672571147".
- Null_hypersurface wikiPageWikiLink Black_hole.
- Null_hypersurface wikiPageWikiLink Category:General_relativity.
- Null_hypersurface wikiPageWikiLink Category:Lorentzian_manifolds.
- Null_hypersurface wikiPageWikiLink Event_horizon.
- Null_hypersurface wikiPageWikiLink Killing_horizon.
- Null_hypersurface wikiPageWikiLink Light_cone.
- Null_hypersurface wikiPageWikiLink Lorentz_metric.
- Null_hypersurface wikiPageWikiLink Normal_(geometry).
- Null_hypersurface wikiPageWikiLink Normal_vector.
- Null_hypersurface wikiPageWikiLink Pseudo-Riemannian_manifold.
- Null_hypersurface wikiPageWikiLink Pullback_(differential_geometry).
- Null_hypersurface wikiPageWikiLink Tangent_space.
- Null_hypersurface wikiPageWikiLink Theory_of_relativity.
- Null_hypersurface wikiPageWikiLink World-line.
- Null_hypersurface wikiPageWikiLink World_line.
- Null_hypersurface wikiPageWikiLinkText "Null hypersurface".
- Null_hypersurface wikiPageWikiLinkText "null hypersurface".
- Null_hypersurface wikiPageWikiLinkText "null surface".
- Null_hypersurface hasPhotoCollection Null_hypersurface.
- Null_hypersurface wikiPageUsesTemplate Template:Citation.
- Null_hypersurface subject Category:General_relativity.
- Null_hypersurface subject Category:Lorentzian_manifolds.
- Null_hypersurface hypernym Surface.
- Null_hypersurface type Bone.
- Null_hypersurface type Physic.
- Null_hypersurface comment "In relativity, a null surface is a 3-surface whose normal vector is everywhere null (zero length with respect to the local Lorentz metric), but the vector is not identically zero. For example, light cones are null surfaces.An alternative characterization is that the tangent space at any point contains vectors that are all space-like except in one direction, in which vectors have a null "length".".
- Null_hypersurface label "Null hypersurface".
- Null_hypersurface sameAs m.0ndhrzy.
- Null_hypersurface sameAs Q16977871.
- Null_hypersurface sameAs Q16977871.
- Null_hypersurface wasDerivedFrom Null_hypersurface?oldid=672571147.
- Null_hypersurface isPrimaryTopicOf Null_hypersurface.