By James Clerk Maxwell
An unabridged, unaltered variation in seven components, to incorporate: Introductory - On Electromagnetic Induction - basic Equations of the Electromagnetic box - Mechanical activities within the box - concept of Condensers - Electromagnetic conception of sunshine - Calculation of the Coefficients of Electromagnetic Induction
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An unabridged, unaltered version in seven components, to incorporate: Introductory - On Electromagnetic Induction - common Equations of the Electromagnetic box - Mechanical activities within the box - concept of Condensers - Electromagnetic concept of sunshine - Calculation of the Coefficients of Electromagnetic Induction
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Additional resources for A Dynamical Theory of the Electromagnetic Field
Cohen-Tannoudji, B. Diu, F. Lalo¨e: Quantum Mechanics (Wiley, New York 1987) 2 9. E. C. Stoner, E. P. Wohlfarth: A mechanism of magnetic hysteresis in heterogeneous alloys, Philos. Trans. A240, 599 (1948) 9 10. L. R. Walker: (unpublished) J. F. : Domains and domain walls, in G. T. Rado, H. ): A Treatise on Magnetism III (Academic, New York 1963) pp. 415–464 N. L. Schryer, L. R. Walker: The motion of 180◦ domain walls in uniform dc magnetic ﬁelds, J. Appl. Phys. 45, 5406 (1974) 9 11. M. Bauer, R.
Hasselbach, A. Benoit, B. Barbara, N. Demoncy, A. Loiseau, H. Pascard, D. Mailly: Experimental evidence of the N´eelBrown model of magnetization reversal, Phys. Rev. Lett. 78, 1791 (1997) 1 7. E. Beaurepaire, J. C. Merle, A. -Y. Bigot: Ultrafast spin dynamics in ferromagnetic nickel, Phys. Rev. Lett. 76, 4250 (1996) G. P. Zhang, W. H¨ ubner, E. -Y. , this volume 1 8. C. Cohen-Tannoudji, B. Diu, F. Lalo¨e: Quantum Mechanics (Wiley, New York 1987) 2 9. E. C. Stoner, E. P. Wohlfarth: A mechanism of magnetic hysteresis in heterogeneous alloys, Philos.
The external ﬁeld H and the magnetization are expressed in units of frequency: ωH = γH, ωM = γ4πMz ≈ γ4πM0 , with Mz the magnitude of the z component of the static magnetization and M0 the saturation magnetization in the medium when no waves are excited. The matrix element F describes the dipole–dipole interaction in (11). It is determined by the expression [3,6] F (ky , kz ) = 1 + P (k) [1 − P (k)] ky2 k2 ωM ωH − P (k) kz2 k2 (13) with P (k) = 1 − 1 − exp(−kL) . kL (14) It is clear from (1–4), that the spectrum of dipolar spinwaves in a tangentially magnetized ﬁlm is anisotropic and that the dispersion properties of waves depend signiﬁcantly on the angle of propagation ϕ.
A Dynamical Theory of the Electromagnetic Field by James Clerk Maxwell