derivation of the steady magnetic field laws
CHAPTER 8: THE STEADY MAGNETIC FIELDAt pps
Ngày tải lên :
07/08/2014, 20:23
... acceptance of the laws a little easier; the proof of the laws does exist and is available for the disbelievers or the more advanced student 8.1 BIOT-SAVART LAW The source of the steady magnetic field ... streamlines of the magnetic field correspond exactly to the equipotentials of the electric field, and the unnamed (and undrawn) perpendicular family of lines in the magnetic field corresponds to the ... counterpart in other fields of science and long ago received the name of curl The curl of any vector is a vector, and any component of the curl is given by the limit of the quotient of the closed...
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Báo cáo hóa học: " Electron-Spin Precession in Dependence of the Orientation of the External Magnetic Field" docx
Ngày tải lên :
22/06/2014, 00:20
... shows the dependence of the initial oscillation amplitude on the angle between the magnetic field and the direction of observation The changes in the amplitude of the oscillations in oblique magnetic ... that the theoretic curve agrees well with the experimental data The dependence of the oscillation decay rate on the orientation of the magnetic field is shown in Fig As can be seen, the change of ... field Htot: a vector sum of the magnetic (H) and exchange (hex) fields The direction of hex is parallel to the growth axis of the heterostructure The instantaneous value of the fluctuating exchange...
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IMPACT OF THE EXTERNAL MAGNETIC FIELD AND THE CONFINEMENT OF PHONONS ON THE NONLINEAR ABSORPTION COEFFICIENT OF a STRONG ELECTROMAGNETIC WAVE BY CONFINED ELECTRONS IN COMPOSITIONAL SUPERLATTICES
Ngày tải lên :
31/10/2015, 10:40
... is the smaller But in the case of absence of an external magnetic field, there are only two maxima of nonlinear absorption coefficient Another point is that the absorption coefficient in the ... greater and the value of absorption coefficients is higher than in case IMPACT OF THE EXTERNAL MAGNETIC FIELD Fig The dependence of α on Ω in case of confined phonons 119 Fig The dependence of α on ... electromagnetic wave and the cyclotron frequency ΩB for the case of an external magnetic field has one main maximum and several neighboring secondary maxima The further away from the main maximum, the...
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báo cáo khoa học:" Histological analysis of the effects of a static magnetic field on bone healing process in rat femurs" pptx
Ngày tải lên :
11/08/2014, 23:22
... Distribution of screws and washers, outlining the borders of the surgical bone cavity A distance of 1.3 mm separates the washers over the surgical cavity, corresponding to the area where the magnetic field ... histological analysis The objective of the present study is to contribute to the understanding of processes involved in the response of bone to electromagnetic fields, by evaluation of cortical and ... the osteotomized border, one of them proximal and the other one distal to the surgical bone cavity The washers were attached to the bone structure with titanium screws (Figure 1) A magnetic field...
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THE ACOUSTOMAGNETOELECTRIC CURRENT OF a RECT ANGULAR QUANTUM WIRE WITH AN INFINITE POTENTIAL IN THE PRESENCE OF AN EXTERNAL MAGNETIC FIELD
Ngày tải lên :
30/10/2015, 20:58
... Eq.(5), the first term is the expression of the density of the acoustoelectric current and the second term is the expression of the density of the AME current If the external magnetic field does ... being the mass of free electron In the figure 1, we show the dependence of the AME current on the acoustic wave number qz with the area of cross-sectional a = b = 100˚ A, the intensity of the magnetic ... area of the RQW The curve of the AME current I strongly increases when the low temperature and the large value range of the acoustic wave number qz The value of the AME current I is zero (the...
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Báo cáo toán học: " A Combinatorial Derivation of the PASEP Stationary Stat" pps
Ngày tải lên :
07/08/2014, 13:21
... address the issues of existence and uniqueness of solutions to the above equations by finding explicit examples of basic weights for certain values of the parameters of the model The main result of ... S, so the language is restricted to {N, S, E, E} Definition Let Pn be the set of bicoloured Motzkin paths of length n The weight of the path in P0 is and the weight of any other path is the product ... showing that the the weight of the paths obeys the same equations as the weight of the basic configurations We may specialise the above result to get the corollary: Corollary 14 If α = β = the paths...
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The intellectual structure and substance of the knowledge utilization field: A longitudinal author co-citation analysis, 1945 to 2004 pdf
Ngày tải lên :
11/08/2014, 05:21
... branched off to become the intellectual center of their new fields In other words, new fields branch off from the original field of innovation diffusion, and at the core of each of these new fields ... This journal is the core journal in the field for the next two decades In 1985 to 1994 the Journal of the American Medical Association enters the field of core journals, and in the next decade ... 'fading' of the diffusion paradigm Our citation maps show that there is not a shift away from the diffusion paradigm; rather, there is a spread of the paradigm to other fields and areas of specialization...
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báo cáo khoa học: " The intellectual structure and substance of the knowledge utilization field: A longitudinal author co-citation analysis, 1945 to 2004" potx
Ngày tải lên :
11/08/2014, 16:21
... branched off to become the intellectual center of their new fields In other words, new fields branch off from the original field of innovation diffusion, and at the core of each of these new fields ... This journal is the core journal in the field for the next two decades In 1985 to 1994 the Journal of the American Medical Association enters the field of core journals, and in the next decade ... 'fading' of the diffusion paradigm Our citation maps show that there is not a shift away from the diffusion paradigm; rather, there is a spread of the paradigm to other fields and areas of specialization...
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on the galois groups of the 2-class field towers of some imaginary quadratic fields
Ngày tải lên :
13/11/2014, 09:08
... QUADRATIC FIELDS by Aliza Steurer Dissertation submitted to the Faculty of the Graduate School of the University of Maryland, College Park in partial fulfillment of the requirements for the degree of ... 128 elements of order eight Suppose we could compute the cyclic subfields of k nr,2 /k of degree 32 over k (there are either 16 or 32 of them) The candidate having the correct number of such elements ... Regardless, both groups have the same number of elements of order 16 Another distinction occurs with the set of conjugacy classes of subgroups of each candidate The subgroup posets of the two candidates...
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Experimental determination of the nuclear magnetic octupole moment of 137ba
Ngày tải lên :
09/09/2015, 11:20
... trap The idea of the experiment is to measure the hyperfine intervals to a high precision This then allows the extraction of the hyperfine constants, one of which, (C), can be related to the nuclear ... experiments, one measuring the hyperfine intervals of the 5D3/2 manifold and the other measuring the intervals of the 5D5/2 manifold These two measurements rely on the same procedures, which are ... nuclear magnetic octupole moment Hence, the observation of the hyperfine (C) constant constitutes observation of the octupole moment The first experiment involved measuring the hyperfine intervals of...
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báo cáo hóa học: " Topological confinement in an antisymmetric potential in bilayer graphene in the presence of a magnetic field" pptx
Ngày tải lên :
21/06/2014, 02:20
... by the magnetic field However, for a larger value of the wavevector, the wavefunctions are only weakly affected by the field, due to the strong localization of the states Figure displays the ... presents the oscillator strength as function of magnetic field for several values of ky The presence of an external magnetic field decreases the oscillator strength at large momentum whereas the ... T (b) The results show a shift of the four mid-gap energy branches as the magnetic field increases In addition, the continuum of free states at zero magnetic field is replaced by a set of Landau...
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báo cáo hóa học: " The investigation of frequency response for the magnetic nanoparticulate assembly induced by time-varied magnetic field" ppt
Ngày tải lên :
21/06/2014, 02:20
... on the field periods and the colloidal relaxation time If the relaxation time is above the period of field, the assembly can occur If the relaxation time is below the period of field, there is ... period of field is the reciprocal of frequency) Then, the magnetic moments of cluster have greater possibility to be perfectly anti-parallel (the angle between two moments is 180°) so that the magnetic ... to overwhelm the disturbances According to the abovementioned analysis, when the frequency of external field is low enough, the field will be incapable of inducing the assembly of magnetic Figure...
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Báo cáo hóa học: " Influence of Landau level mixing on the properties of elementary excitations in graphene in strong magnetic field" docx
Ngày tải lên :
22/06/2014, 00:20
... in magnetic field there exists a conserving 2D vector of magnetic momentum, equal in our gauge to P = p1 + p2 − e [H × (r1 − r2 )] 2c (8) and playing the role of a center -of- mass momentum The magnetic ... eigenvalues of the full Hamiltonian of relative motion ′ H ′ = H0 + V ′ in the basis of the bare magnetoexcitonic states (11) As discussed in the Introduction, a relative strength of the Coulomb ... at rs = (Figure 2c,f) Since convergency of the inverse-square-root function is very slow, even the mixing of rather large (of the order of tens) number of Landau levels is not sufficient to obtain...
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báo cáo khoa học: "The permeability of SPION over an artificial three-layer membrane is enhanced by external magnetic field" pptx
Ngày tải lên :
11/08/2014, 00:22
... dependent on the magnetic properties of the particle and the surrounding medium, the size and shape of the particles and the product of the magnetic flux density and the field gradient Deafness due to ... magnetization vector of the SPION and force the individual dipole moments of the SPION to align along the flux lines The magnetic force along the direction of the z-axis forces the SPION to move ... across the RWM model Due to the fact that the external magnetic field applied to the RWM model to pull the SPION is large enough to overcome the other forces acting on the SPION (like the gravitational...
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báo cáo khoa học: " Histological evaluation of the influence of magnetic field application in autogenous bone grafts in rats" doc
Ngày tải lên :
11/08/2014, 20:20
... tissue repair are hampered by the scarcity of reports in the literature and lack of consensus on the intensity of the magnetic fields to be tested The intensity of magnetic fields used in different ... [15] Most of the studies in this field investigate the influence of electromagnetic fields on bone healing pseudoarthrosis or delayed healing [6,8,12] In most of them, the magnetic fields are ... source of electricity during application of the electromagnetic field [12] The pioneering work by Puricelli et al and Ulbrich in 2003 [14,15] introduced the concept of static magnetic fields...
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ON THE HALL EFFECT IN PARABOLIC QUANTUM WELLS WITH AN IN PLANE MAGNETIC FIELD IN THE PRESENCE OF a STRONG ELECTROMAGNETIC WAVE (LASER RADIATION)
Ngày tải lên :
31/10/2015, 10:41
... obtain the expressions of the Hall conductivity as well as the HC The influence of EMW is interpreted by the dependence of the Hall conductivity and the HC on the amplitude E0 and the frequency Ω of ... GaAs/AlGaAs to show clearly the dependence of HC on the external fields and parameters of system The dependence of the HC on the magnetic field shows the ωc2 + ωz2 = Ω The HC depends nonlinearly ... Evidently, when the confinement frequency ωz increases, the value of ωc (the magnetic field) satisfying this condition decreases So the peak shifts to the left (the region of small magnetic field) as...
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THE INFLUENCE OF ELECTROMAGNETIC WAVE ON THE RELATIVE MAGNETORESISTANCE IN QUANTUM WELLS WITH PARABOLIC POTENTIAL IN THE PRESENCE OF MAGNETIC FIELD
Ngày tải lên :
31/10/2015, 10:43
... on the electromagnetic wave frequency Looking at the graph, we see that the RMR gets the negative values The more the electromagnetic wave frequency and the magnetic field increase, the more the ... the case of the RMR in the bulk semiconductor when the confinement frequency (ωo ) reaches to zero The Eq.(23) shows the dependence of the RMR on the external fields, including the EMW In the next ... RMR in the quantum well We see that the RMR in this case depends on some parameters such as : the intensity of electromagnetic waves, the magnetic field B, the frequency of the radiation, the relaxation...
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Geophysics lecture chapter 3 the magnetic field of the earth
Ngày tải lên :
04/12/2015, 00:25
... of the dipole field From the numbers in CHAPTER THE MAGNETIC FIELD OF THE EARTH 98 Table 7.1 of Stacey and eq (3.43) we deduce that the relaxation time of the dipole is about 1000 years; in other ... (3.65) CHAPTER THE MAGNETIC FIELD OF THE EARTH 104 with δ= ωσµ0 (3.66) the skin depth, the depth at which the amplitude of the field has decreased to 1/e of the original value The skin depth is ... pairs so that the net effect of 110 CHAPTER THE MAGNETIC FIELD OF THE EARTH the magnetic dipoles is zero However, if the number of orbital electrons is odd there is a small net magnetic moment...
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