Electromagnetism II (spring term 2020) Lecture 1 Static electric and magnetic fields E Goudzovski
[email protected] http://epweb2.ph.bham.ac.uk/user/goudzovski/Y2-EM2 Practical details The course homepage (linked to Canvas): http://epweb2.ph.bham.ac.uk/user/goudzovski/Y2-EM2 Notes for each lecture preliminary version: before each lecture; final version: within 24 hours after each lecture. References (from basic to more advanced): I.S. Grant and W.R. Phillips, Electromagnetism, 2nd ed. (Wiley) D.J. Griffiths, Introduction to Electrodynamics, 4th ed. (Cambridge) J.D. Jackson, Classical Electrodynamics, 3rd ed. (Wiley) Lectures, problem sheets, continuous assessment: Twenty-two lectures: Mondays at 5pm and Fridays at 4pm. Assessed problem sheets: weeks 2, 4, 6, 8, 10. Non-assessed problems will be available. 1 Introduction Outline of the course Revision of the EM1 course: electric and magnetic fields. Physics of dielectric materials and magnetism. Maxwell’s equations. Electromagnetic waves: properties; polarisation; energy flux; propagation in dielectrics (dispersion, reflection, refraction) and conductors; wave guides. Motion of charged particles in static fields. System of units The SI system is used in this course. Fundamental drawbacks of SI wrt the Gaussian system: Need conversion factors: the electric and magnetic constants 12 6 2 0 8.9×10 C/(Vm) and 0 1.3×10 N/A . Different units of E, D, B, H fields (V/m, C/m2, T, A/m), though the electric vs magnetic field distinction is relative. 2 This lecture Lecture 1: