Phys 4303.001 (Fall 2017)http://www.physics.umn.edu/classes/2017/fall/Phys%204303.001/Electrodynamics and Waves2017-11-21T13:35:19ZXML::Atom::SimpleFeed2017-11-16T05:42:08Z<ul>
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<small><i>posted 19-Nov-2017 at 11:13PM</i></small>
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</ul>2017-11-20T05:13:59ZMengxing Yecid:63832.eid:473492.updated:2017-11-19 23:13:59HW9 solution (Updated)2017-11-10T05:51:34Z<p>Update from TA: For P5, a note (in red) is added to show 2.5hr in the space ship frame is obtained without applying time dilation directly (some of you got 1.6hr instead).</p>
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<small><i>posted 12-Nov-2017 at 10:41PM</i></small>
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</ul>2017-11-13T04:44:06ZMengxing Yecid:63832.eid:472432.updated:2017-11-12 22:44:06HW8 solution (Updated)2017-11-03T06:02:52Z<ul>
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<small><i>posted 3-Nov-2017 at 1:03AM</i></small>
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</ul>2017-11-03T06:03:43ZMengxing Yecid:63832.eid:470752.updated:2017-11-03 01:03:43HW7 solution (Updated)2017-10-26T05:38:16Z<ul>
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<small><i>posted 26-Oct-2017 at 12:40AM</i></small>
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</ul>2017-10-26T05:40:17ZMengxing Yecid:63832.eid:468882.updated:2017-10-26 00:40:17HW6 solution (Updated)2017-06-21T17:08:53Z<p><strong>Bold Text</strong>SYLLABUS PHYS-4303 FALL 2017</p>
<p>GENERAL</p>
<p>Physics 4303 provides students with<br />
a broader knowledge of electromagnetism, going beyond 4202, including electromagnetic<br />
wave propagation and related Special Relativity. <br />
This course has recently been made mandatory for Physics majors<br />
on the "graduate school" track, and is recommended for all<br />
other majors. However, it is not yet mandatory for students<br />
who began their major before this requirement was added. </p>
<p>This Syllabus includes important information about the course: students<br />
are responsible for knowing its contents and should read it thoroughly.</p>
<p>PREREQUISITES</p>
<p>PHYS 4202 or its equivalent is obviously a prerequisite. Knowledge <br />
of elementary Special Relativity at the level of PHYS 2503 is<br />
also expected. It is desirable that students be familiar with Classical<br />
and Quantum Mechanics at the 4-level, but this is not required. <br />
Knowledge of mathematical techniques at the usual level<br />
for an upper division Physics student is expected, including<br />
Calculus, Linear Algebra and simple differential equations. Knowledge<br />
of Fourier analysis would be very useful. Some more<br />
advanced mathematics may be introduced in the course itself. Some<br />
knowledge of programming (C++, Fortran) or symbolic (Mathlab, Mathematica...) <br />
languages will be useful, but no sophistication in these things is expected.</p>
<p>Students contemplating taking the course who are not sure<br />
they have the background, or who formally are lacking any<br />
prerequisite should consult with the Instructor. Special permissions will be <br />
very liberally granted to all willing to do some extra work.</p>
<p>HOMEWORK AND PROBLEM SOLVING</p>
<p>The homework is the fundamental tool you have to learn the problem solving<br />
skills that you need to really understand Electromagnetism. Nobody ever learned Physics by talking about it. Basically<br />
all of your grade (as you will see below) will be assigned based on <br />
problem solving. If you think you understand the book and the lectures but <br />
cannot solve the problems, then you do not really understand the material. <br />
On the other hand, attempting to solve the problems will help you a lot <br />
in reaching a true understanding of the material. </p>
<p>Homework will be assigned weekly every Monday, and be due one week after. <br />
No late homework will be ever accepted. .<br />
If illness or other valid reason prevents you from doing a set, an adjustment <br />
will be made in the denominator of your homework percentage. <br />
Sample solutions will be posted at the course <br />
web site (see below). Homework will be graded. </p>
<p>You should feel free to work with other people on the homework, as an <br />
informal group. You must hand in your own individual <br />
solutions however, reflecting your own understanding of the problem, correct or not.<br />
In group situations, make absolutely sure that you pull your<br />
own weight and that you understand everything on your own terms. By the<br />
same token, be ruthless to expel any freeloaders from the group, if there<br />
should be any: you'll be doing them a favor in the long run. Remember that<br />
ultimately your grade basically depends on your ability to solve problems<br />
individually.</p>
<p>Attempting all the homework is so important that the grade formula for <br />
the course, as explained below, makes it essentially mandatory. "Attempting"<br />
is not at all the same as "solving correctly": it means trying to.</p>
<p>Handing in solutions copied from another person, or found in the web, would,<br />
be, besides cheating, evidence of lack of interest<br />
in learning, and of inability to keep minimum professional standards:<br />
it would be dealt with accordingly with great severity. </p>
<p>The assigned homework is the minimum amount of practice exercises students<br />
should do. All are encouraged to solve as many additional problems (from<br />
the book or other sources) as possible.</p>
<p>LECTURES AND OFFICE HOURS</p>
<p>Lectures are MWF at 13:25 in room Tate B55. Attendance is recommended.<br />
There are instructor office hours in Tate 130-25 on MW 2:15 to 3:15<br />
and TA (Menxing Ye) office hours at the same time on Fridays, room Tate 201-03 </p>
<p>TEXTBOOK AND OTHER BOOKS</p>
<p>The official textbook for the course is Griffiths, "Introduction<br />
to Electrodynamics", fourth edition. You probably own a copy from 4202. <br />
If you do not, buy one. If you are broke find a<br />
used copy of a previous edition (but note that numbering of equations and<br />
problems may be inconsistent). You should count on keeping this book<br />
after the course, do not resell it: workers do not sell their good tools. </p>
<p>The textbook is deceptively thin: many steps are skipped (some of those<br />
will be covered in the lectures) and students are expected to work them out on <br />
their own: do so. You may find this difficult at first, but in the long run <br />
it'll be good for you. The textbook will be followed relatively<br />
closely, but not slavishly so. Examples as in the book, or <br />
similar ones, will be discussed in class. </p>
<p>If you can, buy also another book for extra reference. No specific 'second<br />
book' can be recommended for everybody. The rule is:<br />
if you find yourself always borrowing the same book from a friend, or<br />
the Library, because you like the explanations in that book better than<br />
Griffith's, then you should buy your own copy. <br />
There are many other Electromagnetism books; just do a google<br />
search. They are of various levels<br />
of difficulty. Jackson and Panofsky&Philips are graduate level. Saslow's<br />
is more elementary than Griffiths and has many interesting insights.<br />
Keep also handy your 2503 book in case you have to review<br />
anything. The same goes for your math books. Also, you need to look<br />
up integrals, series, or special function properties. Do not waste time<br />
doing computations for which you can look up the answer. If you have access to<br />
a symbolic package such as Mathematica, these are built-in. In hard copy, the <br />
Gradshtein-Ryzhik "Tables" and the Abramowitz-Stegun "Handbook of special <br />
functions" are the holy writ.</p>
<p>MATERIAL COVERED</p>
<p>We will cover Electromagnetism, Electromagnetic<br />
wave propagation beyond PHYS 4002 and Special Relativity beyond 2503:<br />
basically, the textbook after Chapter 7. We will do relativity earlier<br />
than its place in the book. There will be a little more emphasis<br />
than in the book on the properties of actual materials as opposed to<br />
'in vacuum' electromagnetism.</p>
<p>Always read, before a lecture, the material in the book that you expect<br />
will be covered in that lecture. You should expect to find some parts<br />
too difficult to understand on your own: that's where you must pay<br />
extra attention, and ask questions, during the next lecture. Take notes<br />
in class and read and edit them within 24 hours: this transfers information<br />
from your short-term memory to long-term. </p>
<p>Attending the lectures is not mandatory, but you are responsible for<br />
all material covered in them, whether or not it is in the book.</p>
<p>EXAMS</p>
<p>There will be a one-hour midterm, now set for Wednesday Nov 1,<br />
and a three-hour final on Dec 18, 8:30-11:30, a date and time <br />
mandated by the University. A make up final will be given only in <br />
the cases where it is strictly required by University rules. There will be no <br />
midterm make up: students having a legitimate excuse as per University rules<br />
will have the denominators of their exam percentage adjusted properly.</p>
<p>All exam questions will be problems, with a range of difficulty and<br />
scope similar to that in the homework.</p>
<p>GRADES</p>
<p>The grades will be determined by two factors: </p>
<p>The regular portion of the grade, R, will be composed of: successful homework<br />
solutions (30% weight), the midterm (30% weight) and the final (40%<br />
weight). R is expressed as a percentage.</p>
<p>The second, participation, P, grade will be computed as<br />
follows: 80% from the number of homework problems you have seriously<br />
attempted (seriously attempted means you have handed in<br />
a solution showing substantial work, even if your solution was 100% wrong) <br />
and 20% from your class participation (asking questions etc) as judged by the<br />
instructor. A diligent student should find it rather easy to get<br />
a P near 100%. </p>
<p>The overall grade T is determined by the square root of P times R. <br />
T=sqrt(R*P). This means for example, that a student getting P=1 (100%) which <br />
is quite doable, and a regular "exams and homework" grade of 64% (a C <br />
according to the formula below) would have<br />
it transformed into 80% (a B/B+). Students<br />
not attempting any homework are guaranteed an F.</p>
<p>Letter grades will be based on overall grade T with 5% intervals corresponding<br />
to +/- increments, that is 15% increments corresponding to every letter. <br />
Thus, you need 40% to get a D-, 55% to get C-, 70% to get B-, 85% to get A-.<br />
This scheme awards A+ to students getting 95% or higher. The University, for<br />
some bizarre reason, does not recognize the A+ grade, students earning one will<br />
have a plain A in their official transcripts, but will receive a<br />
congratulatory email from<br />
the Instructor (which they can frame if they wish). Students<br />
taking the course on an S/F basis must earn at least a C-, a D level grade<br />
is not satisfactory.</p>
<p>INFORMATION</p>
<p>The web site of the course is at: <br />
<a href="http://www.physics.umn.edu/courses/2017/fall/Phys">http://www.physics.umn.edu/courses/2017/fall/Phys</a> 4303.001/index.html<br />
Brief solutions to each homework set will be posted at the web site.<br />
Other information about the course will be posted<br />
there.</p>
<p>Students should periodically check the site, as they are responsible<br />
for knowing the course announcements and other information posted.<br />
</p>
<p>OFFICIAL WARNING</p>
<p>No cheating or other unprofessional behavior will be tolerated. The minimum<br />
penalty for cheating is an automatic F for the course. All cases will be<br />
considered for whatever maximum the Supreme Court allows.</p>
<p>OTHER STUFF (LEGAL):</p>
<p>For anything not covered above, all relevant University Policies will be <br />
followed. A very comprehensive index of such policies is at <br />
<a href="http://www.policy.umn.edu">http://www.policy.umn.edu</a></p>
<p> </p>2017-10-25T14:31:30ZOriol T. Vallscid:63832.eid:450602.updated:2017-10-25 09:31:30Syllabus (Updated)2017-10-23T13:00:39Z<i>This item is restricted: please visit the website to view it.</i>2017-10-23T13:00:39ZOriol T. Vallscid:63832.eid:467902Birefringence2017-10-19T05:58:21Z<ul>
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<small><i>posted 19-Oct-2017 at 12:59AM</i></small>
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</ul>2017-10-19T05:59:10ZMengxing Yecid:63832.eid:466922.updated:2017-10-19 00:59:10HW5 solution (Updated)2017-10-12T15:24:06Z<p>Note from the grader: In problem 1, please note that you should keep the field E and B, which are physical, real.</p>
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<small><i>posted 12-Oct-2017 at 10:24AM</i></small>
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</ul>2017-10-16T06:25:30ZMengxing Yecid:63832.eid:465502.updated:2017-10-16 01:25:30HW4 solution (Updated)2017-10-05T00:38:36Z<ul>
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<small><i>posted 6-Oct-2017 at 2:14PM</i></small>
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</ul>2017-10-06T19:14:16ZMengxing Yecid:63832.eid:463832.updated:2017-10-06 14:14:16HW3 solution (Updated)2017-09-29T22:23:51Z<p>Additional note on problem 2: this problem has many solutions. A good discussion of the issues is on pages 405-407 of the book by Saslow (see syllabus). Note than inside a thin slab one always has H=-M because of geometric demagnetization effects, and hence B=0. This is unrelated to superconductivity.</p>
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<small><i>posted 29-Sep-2017 at 5:24PM</i></small>
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</ul>2017-10-01T15:58:51ZOriol T. Vallscid:63832.eid:462772.updated:2017-10-01 10:58:51HW2 solution (Updated)2017-09-07T21:12:34Z<p>Office Hours by the Prof. will be on Mo and We after class (2:15 to 3:15) in room Tate 130-25 </p>
<p>To find Tate 130-25 go to the first floor and use the misspelled signs to find the door to the Men's room. Across from it there is a door marked: "Fire alarm panel". <br />
Go through it and you will find a hallway. Follow it to the end and you will find 130-25</p>
<p>Office hours by the TA (Mengxing Ye) will be on Fr, same time, but in room Tate 201-03. To find it, go up to the second floor and through the doors marked "Authorized personnel only." Room 201-03 is the first one to your right.</p>
<p>Students for whom these times are impossible should request an appointment.</p>
<p>Any comments or complaints about Tate signs should be directed to Kevin Ross kmr@umn.edu</p>
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<small><i>posted 20-Sep-2017 at 9:12PM</i></small>
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</ul>2017-09-27T17:14:22ZOriol T. Vallscid:63832.eid:457012.updated:2017-09-27 12:14:22Office Hours (Updated)2017-09-21T02:18:50Z<PRE>
Note from the instructor: The 'tricky point' in problem 5 of set 1 is related to footnote 25 on page 381 of the book. Those interested can optionally follow up on the footnote.
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<small><i>posted 20-Sep-2017 at 9:19PM</i></small>
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</ul>2017-09-21T16:26:26ZOriol T. Vallscid:63832.eid:460182.updated:2017-09-21 11:26:26HW1 solution (Updated)