Displacement vectors magnetic

H magnetic displacement vector (or magnetic induction, or indeed magnetic excitation - see Figure 1.3(a)) ... 

Table 3.1. Balance equations for a polarized reactive fluid medium. H magnetic displacement vector, D electrical displacement vector, B magnetic field, E electrical field, P = D-E E electrical polarization (p per unit mass), M = B-H magnetic polarization (m per unit mass), ( ) following the motion, (2) relative to the dipoles (section 3.1), Jok diffusion flux, q heat flux, i diffusion current, p pressure tensor, pi viscous pressure tensor, chemical production rode, fi distant forces other than those due to the electromagnetic field...

Table 4.1. Interfacial balance equations in a polarized reactive fluid medium. Interfacial quantities IT magnetic displacement vector D electric displacement vector Ba magnetic field Ea." electric field Pa = Da — Ea dectfical polarization (per unit mass) M = B - H ...

Electromagnetic radiation consists of an electric vector E directed atong the displacement direction of the wave. The associated magnetic field vector H, lies perpendicular to the electric vector and perpendicular to the direction of propagation. The oscillations of the two fields are given by... 

H is the magnetic field vector and D is called the electric induction or displacement field. This equation is known as the Ampere Oersted law and shows that a magnetic field will exist near an electric current density J. The displacement field, D, is necessary to propagate electromagnetic energy through space, /has units charge area-1 t-1... 

E and H being the electric and magnetic field strength vectors, D the electric displacement vector, B the magnetic induction vector, J the electric current density, and p, the electric charge density. 

Here, E and H are electric field vector and magnetic field vector, respectively. Vector J is the external current source vector. The symbols cr = a x, y, z) and y stand for conductivity function and magnetic permeability constant, respectively, y is assumed to be constant (y = 1). For simplicity only electric sources are considered and displacement currents are assumed to be negligible. 

Maxwell current density Mathematical curl of the magnetic field vector H, eqnal to the vector sum of all current densities, which in the atmosphere is usually limited to conduction, convection, diffusion, lightning, and displacement cnrrent terms. 

In regions free of charges and currents, the boundary conditions satisfied by the fields across an interface between media of differing refractive index are (i) continuity of the magnetic field and the component of the electric field tangential to the interface and (ii) continuity of the normal component of the displacement vector... 

To illustrate the use of the vector operators described in the previous section, consider the equations of Maxwell. In a vacuum they provide the basic description of an electromagnetic field in terms of the vector quantifies the electric field and 9C the magnetic field The definition of the field in a dielectric medium requires the introduction of two additional quantities, the electric displacement SH and the magnetic induction. The macroscopic electromagnetic properties of the medium are then determined by Maxwell s equations, viz. 

The complete displacement and magnetic field strength vectors in the... 

Two or more of these conditions can occur at the same time, resulting in asymmetric axial, radial and tangential velocity vectors. Some flowmeters are more sensitive than others to particular types of flow distortion, e.g. orifice meters are affected by pure swirl more than venturi meters are magnetic flowmeters are unaffected by changes in the radial velocity component whereas ultrasonic time-of-flight meters are highly susceptible thereto swirl and asymmetry have the least effect on positive displacement meters and the greatest effect on variable area meters. 

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