Physics 514, the second course in graduate electrodynamics

Lectures are Wednesdays and Fridays 11:00-12:20 in the Physics & Astronomy Building (A-wing), room A114

Textbook: J.D. Jackson, "Classical Electrodynamics," third edition

Prof. Leslie J Rosenberg

Email: ljrosenberg@phys.washington.edu

Office: Physics & Astronomy Building, room C503

Office Hours: Physics & Astronomy Building, C503, Wednesdays: 12:30am or by appointment

Telephone: (206) 221-5856

Alexander Ditter (head grader) ditte014@uw.edu

Chang Sun sunch610@uw.edu

- Readings, Lectures and Exams
- Special Lectures Special lecture 1: Magnetic monopoles: calculation of the Dirac electric-charge quantization condition
- Homework Homework 1 (Due January 18)
- Midterm-exam information. The exam is Friday February 15 at the
usual class time. The exam is closed-book.
An equation sheet [draft 14feb19] is provided with the exam
and you can ask for most any equation in Jackson. (A draft equation sheet is posted.)
All material, including lectures, homework, and text material through chapter 7
may appear in the exam
There are three problems: a total-internal-reflection problem, a problem involving reflection from a conductor,
and a problem involving dipole radiation with the polarization-vector formalism.
One problem asks for numerical answer; you may use a calculator for it.
You will write your solutions directly on the exam.
You may bring scratch paper, but nothing on scratch paper will
be graded.

Here is a practice exam.

Exam solutions.

mean 65.6, st.dev 13.1, exam-score distribution.

- Final-exam information. The exam is Wednesday March 20 at 2:30pm. The exam is closed-book.
An equation sheet [draft 12mar19] is provided with the exam
and you can ask for most any equation in Jackson. (A draft equation sheet is posted; caveat, it may change before the exam.)
All material, including lectures, homework, and text material through chapter 9, section 4
may appear in the exam.

You will write your solutions directly on the exam. You may bring scratch paper, but nothing on scratch paper will be graded.

FAQs:

"What material will be on the exam?". See the description just above. The exam will emphazize more recent material. The exam has three problems: a waveguide problem emphasizing energy flow, a waveguide problem emphasizing the mode structure. and a radiation problem. Caveat, this may change before the exam.

"Last year's exam had a problem in cavity perturbations, will this be on the exam?" We didn't cover cavity or waveguide perturbation theory this quarter, so it won't be on the exam. (N.B., The final homework has a problem in perturbation theory, which is the jumping-off point for this class of problem.)

"The syllabus has diffraction theory. Will this be on the exam?" We're moving the topic of diffraction theory to next quarter, so it won't be on the exam.

"Will all the equations I'll need be on the equation sheet?" Not necessarily. If you want an equation not on the sheet, raise your hand and if the request is reasonable we'll look it up in Jackson.

Homework 1 solutions

Homework 2 (Due January 25)

Homework 2 solutions

Homework 3 (Due February 1)

Homework 3 solutions

Homework 4 (Now due February 13)

Homework 4 solutions

Homework 5 (Due February 22) . Note on homework 5: we didn't finish the discussion of TE, TM and TEM solutions in class today, Feb 20. So problem 4 on homework 5 will be due with homework 6.

Homework 5 solutions

Homework 6 (Due March 1)

Homework 6 solutions

Homework 7 (Now due March 13)

Homework 7 solutions

Homework 8 (Not graded)

- [20feb19 13:30] Note on homework 5: we didn't finish the discussion of TE, TM and TEM solutions in class today, Feb 20. So problem 4 on homework 5 will be due with homework 6.
- [07feb19 18:35] The due-date of homework #4 is extended to Wednesday, February 13. Unless the snow starts earlier than expected, there will be a lecture on Friday, February 8.
- [06jan19 10:00] Classes are Wednesdays & Fridays. The first class is Wednesday, January 9.

Welcome to Physics 514, the second of a three-quarter sequence of graduate classical electrodynamics. I hope you find this course challenging and stimulating. The topic of electrodynamics is crucial for understanding the underpinnings of the physical and biological sciences. It's also crucial for modern technology. You will need a familiarity with Jackson chapters 1-16 in order to converse sensibly with your colleagues.

Regarding the course: We will use Jackson's text "Classical Electrodynamics". You might want more details than found in Jackson, or perhaps you'd like an alternative approach. In which case you might want to look at Panofsky and Phillips "Classical Electricity and Magnetism". Two very good, very readable, books for some slightly more formal aspects of the classical field theory are Landau and Lifshitz "The Classical Theory of Fields" and "Electrodynamics of Continuous Media". Another nice thing about Landau and Lifshitz is halfway through "Theory of Fields" you're on to General Relativity rather seamlessly. A slightly more elementary alternate text is Slater and Frank "Electromagnetism". Most homework problems, and indeed the problems in most texts, are adapted from Smythe "Static and Dynamic Electricity", a challenging text with an unusual notation. There is no perfect text, and every text has gems scattered throughout.

Mathematical methods are interspersed throughout the course as needed. For a math refresher, you could refer to Dennery and Krzywicki "Mathematics for Physicists".

That said, this quarter we will follow Jackson's text somewhat closely.

SyllabusThe syllabus for 514 starts with the end of chapter 5 in Jackson. We'll then follow the text in more or less the text ordering. We will supplement Jackson's presentation with added material. See above for the readings and lectures. You should try to read the relevant text and added material before class; this will take time but there's a big payoff in your understanding.

Grading40% of your grade is assigned to the midterm exam, 40% to the comprehensive final exam / MRE, 20% to the homework.

Midterm and final exams: There will be one midterm exam and a final / MRE exam. Calculators are permitted, but text storage and graphics functionality must not be used. Exams are to be your own work; you are not permitted to collaborate with any other person. The Physics Department reserves the right to ask for valid identification from any student during examinations.Note that there are no make-up exams or make-up homework. Students with outside professional, service, or career commitments (i.e. military service, professional conference presentation, etc.) conflicting exactly with the exam dates must contact the instructorearly in the quarterto establish alternate procedures. Students who miss an exam or homework due to illness should contact the instructor as soon as you are reasonably able to discuss alternate procedures. Except for debilitating illness, students who miss an exam or homework without making prior arrangements with the lecture instructor will get a zero for that score. Except for illness and circumstances noted above, a final grade of 0.0 may be assigned to any student who misses a midterm exam and a final grade of 0.0 will be assigned to any student who misses the final exam.Re-grades: If you believe that points on an exam or homework were incorrectly totaled or if there's a gross error in the grading, you may submit an exam or homework for regrading. To do so, you must resubmit the exam or homework to the instructor no later than at the beginning of the lecture following the one in which it was returned. You must write a brief note on a separate piece of paper explaining the possible error in the grading, and staple this note to the front of the exam or homework pages when you submit them for re-grading. Do not make *any* changes or marks on any pages of the exam or homework. A request for a regrade may result in re-grading of the entire exam or homework. Therefore your total score may increase or decrease.Lecture homework will generally be assigned and collected weekly. You'll usually turn in homework on the due-day at the beginning of class. You may also leave the homework in the instructor's mailbox in the Physics Department Main office by 10:45am on the due-day. Late homework receives zero points. Note that not all the homework problems will be graded. If you start working on the homework the day before it's due, you will not finish on time, the submitted work will be poor, and you won't receive much benefit from the problems. The graders will consider neatness and logic of presentation, points will be deducted for lack of either. Words help in explaining your solution. I strongly encourage you to work collaboratively, but your submitted work must be your own. Homework:

The lecture instructor and graders will ignore re-grading requests that are not reported promptly. For administrative issues, it's best to contact me via email. But, for physics questions, please don't use email (unless they are of the "yes/no" variety). Physics is best discussed at my office hours. You are welcome to come by outside my office hours, but please don't be offended if I'm too busy to talk. Communication: