Radial velocity is the change in distance with respect to 'time'. But is this the time of light emission (at the star) or light reception (at the observer)? The former seems natural if radial velocity is considered a 'property' of the star, while the latter is more natural for the ...
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Simple saying, we the window, the text frame, the button which founds in VB and so on all are the object, their condition indicated with the data, becomes the object the attribute.The object behavior realizes with the procedure code, becomes the object the method.But the event is can the...
(i) (Axial symmetry without swirl) The velocity field is assumed to take the form for some functions of the cylindrical radial variable and the vertical coordinate . As a consequence, the vorticity field takes the form where is the field (ii) (Odd symmetry) We assume that and , so ...
Our approach is based on Agmon’s methods, which we interpret as a double commutator method, and in particular relying on exploiting the negative definiteness of certain double commutator operators. In the case of Schrödinger operators , this negative definiteness is provided by the identity for...
In summary, my professor said that the moment of inertia of a system is equal to the sum of the moment of inertia of each of its masses. However, I don't see why we can use R here rather than the distance from the center of the pulley to the mass. Isn't the moment of inertia...
Thus, to actually verify essential self-adjointness of a differential operator, one typically has to first solve a PDE (such as the wave, Schrödinger, heat, or Helmholtz equation) by some non-spectral method (e.g. by a contraction mapping argument, or a perturbation argument based on an...
The global energy is intense, enhances the electric appliance the efficiency is the effective method.Lighting electricity occupies the global 21% total electricity consumption, if can enhance the illumination uses the efficiency, may alleviate the energy to be anxious effectively.How enhances the li[tr...
What is claimed is: 1. In an apparatus for recording and reproducing a time-series digital data set to and from a disk recording media via a buffer, a method for coping with a data loss caused by each of seek operations in a... R Yasukohchi,A Uesugi,M Sato,... 被引量: 19发表...