unit vector field造句
例句與造句
- The dual covector field of the timelike unit vector field in any frame field represents infinitesimal spatial hyperslices.
- The Reeb vector field at the Sasakian manifold at unit radius is a unit vector field and tangential to the embedding.
- Their theory contains less information than that of Gasperini, instead of a scalar field giving a universal time it contains only a unit vector field which gives the direction of time.
- Suppose the strong energy condition holds in some region of our spacetime, and let \ vec { X } be a timelike " geodesic " unit vector field with " vanishing vorticity ", or equivalently, which is hypersurface orthogonal.
- In general relativity, Fermi Walker derivatives of the spacelike unit vector fields in a frame field, taken with respect to the timelike unit vector field in the frame field, are used to define non-inertial but nonspinning frames, by stipulating that the Fermi Walker derivatives should vanish.
- It's difficult to find unit vector field in a sentence. 用unit vector field造句挺難的
- In general relativity, Fermi Walker derivatives of the spacelike unit vector fields in a frame field, taken with respect to the timelike unit vector field in the frame field, are used to define non-inertial but nonspinning frames, by stipulating that the Fermi Walker derivatives should vanish.
- TeVeS is constructed from a local Lagrangian ( and hence respects conservation laws ), and employs a unit vector field, a dynamical and non-dynamical scalar field, a free function and a non-Einsteinian metric in order to yield AQUAL in the non-relativistic limit ( low speeds and weak gravity ).
- where and are smooth real-valued functions on, is the volume form compatible with the metric, d \ widetilde { V } is the induced volume form on the boundary of, is oriented unit vector field normal to the boundary, and div ( grad " u " ) } } is the Laplacian.
- This theory is written in terms of a Lagrangian that contains, in addition to the Einstein Hilbert action for the metric field g _ { \ mu \ nu }, terms pertaining to a unit vector field u ^ \ alpha and two scalar fields \ sigma and \ phi, of which only \ phi is dynamical.
- Frame fields always correspond to a family of ideal observers immersed in the given spacetime; the integral curves of the timelike unit vector field are the worldlines of these observers, and at each event along a given worldline, the three spacelike unit vector fields specify the "'spatial triad "'carried by the observer.
- Frame fields always correspond to a family of ideal observers immersed in the given spacetime; the integral curves of the timelike unit vector field are the worldlines of these observers, and at each event along a given worldline, the three spacelike unit vector fields specify the "'spatial triad "'carried by the observer.
- Computing the kinematic decomposition of the timelike congruence defined by the timelike unit vector field \ scriptstyle \ vec { f } _ 0, we find that the expansion and vorticity again vanishes, and in addition the acceleration vector vanishes, \ scriptstyle \ nabla _ { \ vec { f } _ 0 } \ vec { f } _ 0 \; = \; 0.