| 词汇 | example_english_magnetic-field |
| 释义 | Examples of magnetic fieldThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. The normal component of the magneticfield is continuous across the boundary. A nonlinear thermal instability in a layer of electrically conducting fluid in the presence of a magneticfield is discussed. A strong magneticfield applied across an electrically conducting fluid has a significant effect on thermal instability. Insertion of a metal clip in or near the aortic wall at operation can result in localized artifact due to distortion of the magneticfield. The magneticfield is discretized by means of edge elements. Our aim is to perturb the neutral solution (3.3)in order to find the stability when the magneticfield is weak. For small wave-numbers it is found that the magneticfield increaaes the instability. The analysis of the jet reveals the surprising result that the magneticfield makes inviscid long-wave disturbances more unstable. In addition to the influence of the magneticfield (strength and direction), we study the effect of the wall conductance ratio on the flow. The hydromagnetic stability of a basic two-dimensional parallel flow of an incompressible conducting fluid in a uniform magneticfield parallel to the flow is considered. Figure 2 shows the effect of the magneticfield on the velocity. The velocity gradients, and hence the viscous drag, are reduced by the magneticfield. The velocity, pressure, and magneticfield will be found by iteration in the following way. To observe the transition to two-dimensionality one can consider the y -component of the velocity parallel to the magneticfield at fixed parameters. Instead of just assuming that the magneticfield was weakly perturbed, the full equations were retained and the usual boundary-layer approximations made. Scientific measurements show that the strength of the magneticfield has decreased over the centuries. Besides other parameters, the ripple dynamics and magneticfield play a significant role for scattered power. So, the columns are z-axis cylinders, and neither the magneticfield nor the velocity has a radial component. Ignoring collisions, the basic interaction between cosmic rays and the thermal plasma is mediated by the embedded magneticfield. Instead of binary collisions, microscopic non-ideal effects can violate the frozen-in condition of a magneticfield and cause collisionless magnetic reconnection in these systems. The application of an axial magneticfield is the well-known method for stabilizing plasma z-pinch implosions. The axial magneticfield was created by two magnetic coils. Imposing of the initial axial magneticfield causes the liner rotation. The axial magneticfield lines are thus compressed and will conserve their flux throughout the implosion. However, azimuthal velocity increases, and this, in our opinion, should strengthen the process of turbulent mixing, and hence the dissipation of the axial magneticfield. Therefore, it is desirable to find more efficient alternatives for creating an axial magneticfield. An analysis of electron trajectories in a helical magnetic wiggler with a uniform ion channel and a uniform axial magneticfield is presented. This can be overcome by using an axial magneticfield. Results have demonstrated that the magneticfield configuration creates an electron trap in front of the target surface along the axial direction. The electric field which accompanies the time change in the axial magneticfield also decreases from the outside to the inside. The growth rates of the self-generated magneticfield in our simulation are in good agreement with the results of our theoretical calculations. This inequality (50) will allow us to discuss the influence of the horizontal magneticfield. This is a signature of large-scale dynamo action: the magneticfield at large scales is fed by the small-scale velocity field. Entropy waves are also pressure-balance structures in which there are no gas pressure and magnetic field perturbations, but the entropy and density perturbations are non-zero. Once the magneticfield generated by the rising current becomes large enough, the low-density corona begins to self-pinch onto the core. The magneticfield was set at outer radial boundary using an experimental current waveform. In this paper, we have explored, on the basis of laboratory experiments, the creation of a flux tube with twisted magneticfield lines. We examine the effect of a vertical magneticfield on long gravity waves in a shallow, inviscid, electrically conducting liquid. Knowing this one finds immediately that the inertial correction to the electric potential has a parabolic behaviour along magneticfield lines. Its synthesis was strongly associated to the absence of magneticfield. Therefore, any decrease in background emission in the presence of a magneticfield indicates a fast decrease in the plasma temperature. During the saturation, emission intensity was found less in the presence of the magneticfield in comparison to its absence. A cusp magneticfield has been installed to improve radial confinement and reduce the field strength on the beam axis. In this regime the damping is expected to be collisional and the weak solenoid magneticfield is expected to effect the skin depth. The electron beam parameters and the guide magneticfield strength remained unchanged. Characterization of laser plasma in a pulsed magneticfield, spatially resolved emission studies. Increasing the magneticfield causes an increase in oscillation frequency and a decrease in modulation degree. In the case of a krypton pinch, the role of the magneticfield is not limited to implosion stabilization. Current assignment for the beam-generated magneticfield calculation is per formed during orbit integrations at the same time as space-charge assignment. We also restrict our attention to propagation perpendicular to the magneticfield. Problems associated with shock heating of liquid jets in a strong magneticfield are analyzed in this study. They do not contribute to the magneticfield solution. The plasma flow slows down near r 0.75 mm due to interaction with the magneticfield of the discharge. However, it is questionable whether this high magneticfield may be obtained with superintense laser pulses. The density gradient is higher there so the magneticfield in this region reaches the maximum value. The plasma pressed by the magneticfield to the internal electrode is unstable because of an unfavorable curvature of the magneticfield lines. The temperature profile is determinated by such magneticfield distribution. In this model the liner is treated as an infinitely thin superconductive shell imploded under the pressure of the self magneticfield. The total magneticfield pressure at the anode edge of the constriction is higher than at the cathode edge. Because the magneticfield lines resist "bending," such azimuthal asymmetries are not expected to grow and become unstable. In the limit that the frequency approaches zero, physically the magneticfield penetrates the plume slab. The beam moves in a strong guiding magneticfield and has large energy and angle spreads after it passes through a generator. The effect of the magneticfield is clearly observed in this drawing. Stabilization of the light liner has been achieved by means of an extrinsic magneticfield. Effects of the magneticfield on hot electron propagation are assumed to be negligible. The electron with trajectory shown as a solid line is trapped by the magneticfield until it is finally scattered and absorbed. The magneticfield, including the diamagnetic field of the beam, does not contribute to the flux of the z-component of the momentum. The electron spatial distribution in such a magneticfield looks like a ring. These induced moments will in turn interact with the magneticfield. Transport of energetic charged particles in a radial magneticfield. A time sequence of a ring beam evolving in a radial magneticfield (t l 0.1, 1, 2.5, 5) using the f approximation. In a magnetized plasma, we have a natural symmetry axis along the direction of the magneticfield lines. For strong magneticfield cases, we confirm that the gravitational instability develops gradually on a time scale characteristic of ambipolar diffusion. The one-dimensional approximation means that the cloud structure depends only on the direction of this background magneticfield (z-direction). To derive the microscopic expression for the self-consistent magneticfield potential, one needs to take into account the motion of the particles. This collapse time scale depends strongly upon the size of the cloud and the strength of the magneticfield at its surface. The effect of self-generated magneticfield has not been taken into account. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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