PYSICS Electricity & Magnetism Tuesday and Thursday 12:30-1:45 At DeBartolo, Room 119 By Prof. S. Frauendorf 125 NSH

Office hours: Tuesday and Thursday 10:30-11:30 Homework: Every week, due on Tuesdays by 16:00. Will be provided as MS doc file in the course space. Late homework policy: Turned in within the week of the deadline: 75% within the following week: 50% later: 0% Graded HW back after 2 weeks.

Midterm Exam 30% Final Exam40% Homework30% Grade Grades available on WebCT Teaching assistant: Sun Jie(Jason), room 120 tel.:

Style Combination of Powerpoint slides containing the most important results available in the course space phys I:\coursefa.06\phys\phys and handwritten notes derivations, explanations, …

Syllabus Text: Introduction to Electrodynamics, David J. Griffiths, (3 rd ed ), Chapters Vector Analysis 2.Electrostatics 3.Special Techniques 4.Electric Fields in Matter 5.Magnetostatics 6.Magnetic Fields in Matter 7.Electrodynamics

Advertisment What is electrodynamics, and how does it fit into the general scheme of physics?

Natural phenomena are governed by the electromagnetic interaction.

It governs our man-made world as well.

It keeps the molecules together.

Even where you do not expect it, the electromagnetic interaction is at work.

Mechanics tells us the reaction of a body to a force. Forces are given.

Electromagnetism is the theory two types of forces: Electric force Magnetic force

Classical Mechanics Newton Quantum Field Theory Dirac, Pauli, Feynman, Schwinger, …. Quantum Mechanics Bohr, Heisenberg, Schrödinger, … small Special Relativity Einstein fast

Electric Charge (q, Q) 1.Charge exists as +q and –q. At the same point: +q-q=0 2.Charge is conserved (locally). 3.Charge is quantized. +q =n (+e), -q = m (-e), m, n, integer electron: –e, positron: +e, proton: +e, C-nucleus: 6(+e) Charge conservation in the micro world: p + e -> n (electron capture) Macro world: q ~e Quantization is unimportant. Imagine charge as some kind of jelly.

The Field Formulation qq F E q v = c Light wave

Four kinds of forces - interactions 1.Strong Keeps nuclei and nucleons together. 2.ElectromagneticMost common phenomena. 3.Weakβ-decay n->p+e+ν 4.GravitationalKeeps the Universe together. Unification electric + magneticelectromagnetic electrodynamic + weakelectroweak electromagnetic + optic electrodynamic

In Quantum Field theory the difference between particles and forces becomes rather diffuse. Two types of quantum particles: Fermions and Bosons.

SI-Units Systeme Internationale Mechanics length:meter (m) mass:kilogram (kg) time:second (s) force:newton ( work:joule (J = N m) Power: watt (W = J/s) Electromagnetism current: ampere (A) charge: coulomb (C = As) voltage: volt (V ) work: (W s = V A s) power: watt (W = V A) The equations of EM contain