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Notes: Spring 2016
These notes will be updated regularly.
As a way to warm up, and to review elements of the last
semester, work out these problems: Pretest
Treat this as a test.
Work independently. You may use any notes from this page, but no other
resources.
Review of electrostatics and magnetostatics, and the general
solution of the Poisson equation
Overview
of electrostatics and magnetostatics
For more detail, see the archival notes for 3600.
Green
functions: formal developments
Time
dependent Green function for the Maxwell fields and potentials
Mathematical
note: Complex analysis
Reflection
and refraction of plane waves at an interface
Frequency
dependence of the permittivity
Waves
in plasma with a magnetic field
Superpositions
of plane waves. Group velocity.
Time
evolution of a Gaussian wave packet
Waveguides
and cavities (updated, 2/26, 7:30 pm)
Midterm exam: Friday, March 4
Optional: Formal
development of Lorentz transformations
Relativistic
unification of Newtonian mechanics and electrodynamics
Lorentz
transformation of electromagnetic fields
Thomas
precession and the BMT equation
Motion
of relativistic charged particles in constant fields
Invariants
of the electromagnetic field
Motion
of charges in non-uniform magnetic fields
Final exam: Monday, March 2, 2:00 PM
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Archival Notes
For your convenience, I include below my
Notes from the most recent versions of E&M I have taught. These may be
helpful for review or for a slightly different approach to some problems.
Electrodynamics I, Fall 2011 (level of
Jackson, Physics 6110)
Electromagnetism I, Fall 2015 (level of
Griffiths, Physics 3600)
Electrodynamics II, Fall 2011 (level of
Jackson, Physics 6120)
Electrodynamics I, Physics 6110, Fall, 2011
Notes from the 2011 version of Electrodynamics I
(incomplete, but see 3600 below for some comparable material).
Notes on
Introduction and Chapter 1
Notes
Magnetic field of a current loop
Electromagnetism I, Physics 3600, Fall, 2015
Notes from the 2015 version of Electromagnetism I.
Mathematical background
I. Vectors
A. Definition
B. Dot product
C. Cross product
D. Rotations
E. Exercises (required)
II. Derivatives of vectors and vector identities
A.
Curves
B.
Gradient
C.
Divergence
D.
Curl
E.
Combining derivatives
F.
The Levi-Civita tensor (optional)
G.
Exercises
III. Integral
theorems
A.
Integral of the gradient
B.
The divergence theorem
C.
StokesÕ theorem
D.
Exercises
IV. Additional mathematical tools: Summary
A.
Cylindrical coordinates
B.
Spherical coordinates
C.
Rotations
D.
Dirac delta function
E.
Helmholz theorem
F.
Exercises
G.
Additional mathematical tools: Detail (optional)
Electrostatics
Techniques for computing time independent electric fields from a variety
of sources.
A. CoulombÕs law and the electric field
B. The continuum limit
C. Exercises
D. Math
reminder: Taylor series
II. Gauss's
law
A. The integral form of GaussÕs law
B. Examples using the integral form of
Gauss's law
C. Exercises
III. MaxwellÕs equations for electrostatics
A. The differential form of GaussÕs law
B. The curl of the electric field
C. MaxwellÕs equations for
electrostatics and the electric potential
D. Boundary conditions
E. Examples
F. Exercises
A. Conservation of energy in the
presence of electrostatic forces
B. The energy of a charge configuration
C. Force on a charged surface
D. Capacitance
E. Examples
F. Exercises
Solution techniques for electrostatics
A. Planes
B. Spheres
C. Exercises
II. Separation of variables in Cartesian coordinates
A. Separation of variables
B. Satisfying the boundary conditions
C. Exercise
II. Separation of variables in spherical coordinates
A. Separation of variables
B. Satisfying the boundary conditions.
These examples show some of the range of applications solvable using the
spherical expansion. However, you will only be required to do problems similar to the exercises.
C. Exercises
III. Multipole expansion
A. The multipole expansion
B. Monopole
C. Dipole
D. Quadrupole (optional)
E. Exercises
Electric fields in matter
A. Polarization of molecules
B. The potential produced by polarized materials
C. Electric displacement
D. Boundary conditions
E. The Laplace equation in cylindrical coordinates
F. Examples
Magnetism
I. The Lorentz force law and the magnetic field
A. The Lorentz force law
B. Current density
C. The Biot-Savart law
II. Amp¸re's law
A.
Amp¸reÕs law
B.
Examples
III. The vector potential and the laws of magnetostatics
A.
Divergence of the magnetic field
B.
Magnetostatics and the vector potential
C.
Multipole expansion of the vector potential
D.
Summary of the equations of magnetostatics
IV. Problems in magnetostatics
Electrodynamics II, Physics 6120, Spring, 2014
Notes from the 2014 version of Electrodynamics II, for your
convenience.
Electromagnetic
energy and momentum
Rotations,
Parity and Time Reversal Symmetries
Reflection
and refraction of plane waves at an interface
Dispersion:
frequency dependence of the dielectric constant
Propagation
of waves in the ionosphere
A
brief note on magnetohydrodynamics
Dispersion:
Evolution of a Gaussian wave packet
Waveguides
and resonant cavities
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