November

November

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lecture 17

Bar magnets, electromagnetism and conservation of energy, electromagnetic energy density, Poynting vector, conservation of momentum
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MIDTERM EXAM 11:25am-1:25pm in Dewey 2110E
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5 6 7
lecture 18

Maxwell stress tensor, force on a conducting surface, capacitance matrix, inductance matrix

supplement

Force, torque, and interaction energy for electric and magnetic dipoles in an external field - we did not go over this in lecture.
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lecture 19

Electromagnetic waves in a vacuum, energy and momentum in electromagntic waves, frequency dependent atomic polarizability
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lecture 20

Complex frequency dependent dielectric function, electromagnetic waves in a dielectric, dispersion relation, phase velocity, group velocity, normal and anomalous dispersion

make-up lecture 11:25am-12:40pm in Dewey 2110E
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12 13 14
lecture 21

Electromagnetic waves in a dielectric: transparent propagation, resonant absorption, total reflection, electromagnetic waves in conductors: frequency dependent conductivity

HW #5 due, in lecture
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lecture 22

Electromagnetic waves in conductors: low frequency "good" conductors, skin depth, high frequencies, longitudinal modes and plasma oscillations; polarization of transverse waves
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lecture 23

Linear, circular and elliptical polarization, waves at interfaces, angles of incidence, reflection and transmission, Snell's law, total internal reflection

make-up lecture 11:25am-12:40pm in Dewey 2110E
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19 20 21
lecture 24

Snell's law for dissipative media, coefficient of reflection, total reflection, Brewster's angle
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HW #6 due by noon in homework locker

Thanksgiving
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Thanksgiving
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Thanksgiving
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Thanksgiving

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Thanksgiving
27 28
lecture 25

Kramers-Kronig relation, Green's function for the wave equation, Lienard-Weichert potentials for a moving charged particle
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lecture 26

Potentials from a point charged particle moving with constant velocity, radiation from a source oscillating with simple harmonic motion, electric dipole, magnetic dipole, and electric quadrupole radiation