In practice, a well-magnetized sample of NEO begins as a powder of many small crystallites. In a strong magnetic field, it is then heated (technically, sintered), which partially melts together the magnetized crystallites. For a sample prepared in this way, if there is a defect site at ...
Practice Key Terms 2 Read also: Magnetic force on a current-carrying conductor Online Chapter Magnetic fields and lines Online Chapter University physics volume 2 Online Course Get Jobilize Job Search Mobile App in your pocket Now! 100% Free Mobile Applications Receive real-time j...
In principle the resulting charge density should be the same, however, in practice they can dis- agree, especially in regions with strong gradients. It is impor- tant to stress two points about the charge densities shown in Figs. 9 and 10. First, they are located in the region (in ...
The magnetic force between parallel uncharged current-carrying wires is derived by considering the forces on a boosted electron in the presence of a current-carrying wire. The magnetic force is seen to be caused by Lorentz contraction, which is extraordinarily tiny for typical lab demonstrations. ...
(shown as dashed lines) and produces the cross-polar cap potential. In principle, the cross-polar cap potential should be related to the length of the X-line or lines at the magnetopause. However, in practice, it is difficult to link the two quantities because of variations of the ...
Of course, such surgery would be very intrusive, and outside the bounds of ethical practice. The anencephalic's intact functions may be a case of accommodation, not unlike what we see in recovery from open-head injuries and following the surgical removal of brain tissue, as in brain cancer...
In current obstetric practice, preterm labour is mainly diagnosed by the presence of regular painful uterine contractions accompanied by cervical dilatation or effacement before 37 weeks of gestation. However, the sen- sitivity and specificity of these signs are low in most cases, and this can ...
The first is related to sufficient penetrating force (normal force), which is prepared by a magnet (permanent or electromagnet); the other is related to the cutting force (tangent force), which is generated by the relative motion between the nano-particles and the mural clot surface and is ...
In practice, the magnetic recording layer is in reality replaced by a stack of layers to ensure uniformly sized and well-oriented magnetic grains with out-of-plane magnetization. In addition, a soft-magnetic underlayer is introduced to channel the magnetic flux of the write head back into the ...
(magnetic) pressure exerted by the magnetic field. In practice, to avoid the appearance of instabilities, kinetic pressure must be much less than magnetic pressure (a factor of 10). Therefore, for a given magnetic field and temperature, this places a limit on density. With standard temperature...