Electromagnetism 2 - Spring 2021
This course is the second semester of electricity and magnetism at the undergraduate physics level. Time enters the theory of electromagnetic fields and we arrive at Maxwell's equations, the complete classical theory of electromagnetism. The arrival happens pretty early in the term, and the bulk of our work will be to study electromagnetic waves and radiation.
Recordings of classes and tablet are here.
A note about reflection at oblique incidence is here. In this note, the wave vector is denoted q. In class and the text it is k. These are two commonly used symbols for the same quantity.
Fourth homework is here. Due 10 pm Monday, March 1.
Third homework is here. Solutions are here. Grades are on Canvas.Details
Textbook and other reading:Text: Introduction to Electrodynamics, (Fourth Edition) by David J. Griffiths
Another useful text is Classical Electromagnetic Radiation, Jerry B. Marion (1965). There is a revised 3rd edition by Mark A. Heald and Jerry B. Marion. This book is at the same level (more or less) as Griffiths. I'll use it occasionally for lecture material. It appears that it can be downloaded as a pdf. Cheap used copies are available. In addition, reading Feynman's lectures is always valuable.
For a book about electromagnetic waves and optics, you cannot do better than the book Optics by Miles Klein, updated as a second edition by Klein and Thomas Furtak.
If you want to look at graduate-level texts, try Classical Electrodynamics, John D. Jackson (3rd edition 1999). This is the standard graduate text. Also The Classical Theory of Fields, Lev Landau and Evgeny Lifshitz (1951 and later; the 4th edition is revised substantially) and Electrodynamics of Continuous Media, Lev Landau, Evgeny Lifshitz, and L.P. Pitaevskii (1960 and later). The Landau and Lifshitz texts are at the graduate level, but are readable. You need both to cover all of E&M.Course Learning Goals:
At the end of the semester, you will know that electromagnetism is governed by the four Maxwell equations plus the Lorentz force law. You will be familiar with energy and momentum of the electromagnetic fields. You will understand electromagnetic waves in the vacuum and in matter and how these derive from Maxwell's equations. You will be familiar with the physics that governs optical effects in matter. You will learn about the potential and fields from time-dependent currents and from charges in motion.
Methods by which students will be evaluated and their grade determined:
There will be three in class exams (100 points each). The lowest grade on the three will be dropped and the other two will each make up 20% of your grade. The exam dates are 2/8, 3/12, and 4/2.
The final (7:30 to 9:30 am Friday, April 30) will be worth 200 points and makes up 25% of the total. If all three exam scores are good, one of them can replace half of the final score.
There will be homework (35%). The lowest-scored homework set will be dropped. The homework due dates are 1/22, 2/3, 2/15, 3/1, 3/10, 3/29, 4/12, and 4/21.
Class delivery and other information:The class will be delivered on Zoom. I’ll write on a tablet what in normal times would be written to the blackboard.
Our class sessions will be audio-visually recorded for students in the class to refer back and for enrolled students who are unable to attend live. Students who participate with their camera engaged or utilize a profile image are agreeing to have their video or image recorded. If you are unwilling to consent to have your profile or video image recorded, be sure to keep your camera off and do not use a profile image. Likewise, students who un-mute during class and participate verbally are agreeing to have their voices recorded.
If you are not willing to consent to have your voice recorded during class, you will need to keep your mute button activated and communicate exclusively using the "chat" feature, which allows students to type questions and comments live. The chat will not be recorded or shared. As in all courses, unauthorized recording and unauthorized sharing of recorded materials is prohibited.Recordings of the streamed videos from the fall of 2020 are at Mediasite.
Other course notes:
All students are required to abide by the Student Conduct & Honor Code of the University of Florida. See the syllabus for attendance. accomodatons, course evaluation, student counseling.
Links. (Send me any you find and like!)