PHYS 436 :: Physics Illinois :: University of Illinois at Urbana-Champaign

Schedule

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New Homework assignments will be published on this page on Friday.  They will be due on Fridays of the next week at 1159 pm.  You can submit your homework up to five days later (Wednesday night at 1159pm) for 75% credit if there is no exam scheduled that week; for such cases, only three more days will be given.  After that late deadline, no credit can be earned.  

To hand in HW assignments, we use Gradescope.  If you do your HW on paper, carefully scan your solution pages to produce a clean and legible pdf file.  If you use an electronic tablet for your work, use it to produce a pdf file.  Submitt your file to the Gradescope HW depository.  It is important that your file can actually be read and graded.  Illegible files will not be graded and will result in zero credit. Please create a Gradescope account if you do not have one already, and use code 3XKY6W to add PHYS 436.  

Please note that this webpage will be updated for links to the lecture notes and the discussion materials.

 

Date Lecture Reading (Griffiths Sections) Homework Discussion Exams
Monday 8/25/2025

Lecture 1
Review of PHYS 435 to Faraday's Law and Magnetic Field Energy

Lecture1.pdf

1.1 - 7.2
 
     
Tuesday
8/26/2025
      No Discussion  
Wednesday
8/27/2025
Lecture 2
Locality and Maxwell's Equations
Conservation Laws in Electrodynamics
Lecture2.pdf
7.3 - 8.1.1      
Friday
8/29/2025
Lecture 3
Poynting's Theorem
Lecture3.pdf
8.1.2, 8.2.1 Assign HW1
due Sep 5, 2025 23:59 for 100%
Sep 10, 2025 23:59
 for 75%
Solution

 
 
Monday
9/1/2025
No class (Labor Day)        
Tuesday 9/2/2025      

Discussion 1 pdf 

Solutions 1 pdf

 

Wednesday
9/3/2025

Lecture 4
Conservation of Momentum
Lecture4.pdf

8.2.2      
Friday
9/5/2025
Lecture 5
Maxwell Stress Tensor
Lecture5.pdf
8.2.3

Assign HW2
due Sep 12, 2025 23:59 for 100%
Sep 17, 2025 23:59
 for 75%
Solution

   
Monday
9/8/2025
Lecture 6
EM Angular Momentum Density
Lecture6.pdf
8.2.4  

 

 
Tuesday
9/9/2025
    -

Discussion 2 pdf

Solutions 2 pdf

 
Wednesday
9/10/2025
Lecture 7
Classical Wave Equation
Lecture7.pdf
9.1      
Friday
9/12/2025
Lecture 8
Electromagnetic Waves
Lecture8.pdf
9.2.1, 9.2.2 Assign HW3
due Sep 19, 2025 23:59 for 100%
Sep 24, 2025 23:59
 for 75%
Solution
   
Monday
9/15/2025
Lecture 9
Energy and Momentum of EM Waves
Lecture9.pdf
9.2.3  

 

 

 
Tuesday
9/16/2025
     

Discussion 3 pdf

Solutions 3 pdf

 
Wednesday
9/17/2023
Lecture 10
EM Waves in Isotropic Linear Media
Lecture10.pdf
9.3.1      
Friday
9/19/2023
Lecture 11
Normal Reflection and Transmission of EM Waves 
Lecture11.pdf
9.3.2

Assign HW4
due Sep 26, 2025 23:59 for 100%
Oct 1, 2025 23:59
 for 75%
HW4

Solution

   
Monday
9/22/2025
Lecture 12
Oblique Reflection and Transmission of EM Waves I
Lecture12-13.pdf
9.3.3  

 

 

 
Tuesday
9/23/2025
     

Discussion 4 pdf

Solutions 4 pdf

 
Wednesday
9/24/2025
Lecture 13
Oblique Reflection and Transmission of EM Waves II
9.3.3  

 

 
Friday
9/26/2025
Lecture 14
EM Waves in Conductors
Lecture14.pdf
9.4.1 Assign HW5
due Oct 3, 2025 23:59 for 100%
Oct 8, 2025 23:59
 for 75%
Solution
   

Monday
9/29/2025

Lecture 15
Optical Dispersion
Lecture15.pdf
9.4.2  

 

 
Tuesday
9/30/2025
     

Discussion 5 pdf

Solutions 5 pdf

 
Wednesday
10/1/2025
Lecture 16
Rectangular Wave Guides
Lecture16.pdf
9.5.2  

 

 
Friday
10/3/2025

Lecture 17
Wave Guide General
Lecture17.pdf

9.5.1      
Monday
10/6/2025
Lecture 18
Coaxial Cables
Lecture18.pdf
9.5.3  

 

 

 
Tuesday
10/7/2025
   

 

Discussion 6 pdf

Solutions 6 pdf

 
Wednesday
10/8/2025

Lecture 19
Resonant Cavity
Lecture19.pdf

       
Friday
10/10/2025
No Lecture
Formula sheet.pdf
       
Monday
10/13/2025
MidTerm 1        
Tuesday
10/14/2025
 

 

   

No Discussion

 
Wednesday
10/15/2025

Lecture 20
Potential Formulation of Electrodynamics
Lecture20.pdf

10.1.1      
Friday
10/17/2025

Lecture 21
Gauge Transformations
Lecture21.pdf 

10.1.2, 10.1.3

Assign
due Oct 24, 2025 23:59 for 100%
Oct 29, 2025 23:59
 for 75%
HW6

   
Monday
10/20/2025

Lecture 22
Retarded and Advanced Potentials
 

10.2      
Tuesday
10/21/2025

 
   

Discussion 7

Solutions 7

 
Wednesday
10/22/2025

Lecture 23
Liénard-Wiechert Potentials
 

10.3.1
 
   
Friday
10/24/2025

Lecture 24
E&M Field of a Moving Charge 1
 

10.3.2 Assign
due Oct 31, 2025 23:59 for 100%
Nov 5, 2025 23:59
 for 75%
HW7

 

 
Monday
10/27/2025
Lecture 25
E&M Field of a Moving Charge 2
 
10.3.2

 

 

 
Tuesday
10/28/2025

 

   

Discussion 7

Solutions 7

 
Wednesday
10/29/2025

Lecture 26
Electric Dipole Radiation and Antenna
 

11.1.1, 11.1.2  

 

 
Friday
10/31/2025
Lecture 27
Radiation from Arbitrary Charge / Current Distribution 1
 
11.1.4 Assign
due Nov 7, 2025 23:59 for 100%
Nov 12, 2025 23:59
 for 75%
HW8
   
Monday
11/3/2025

Lecture 28
Radiation from Arbitrary Charge / Current Distribution 2
 

11.1.4

 

   
Tuesday
11/4/2025

 

   

Discussion 8

Solutions 8

 
Wednesday
11/5/2025

Lecture 29
Magnetic Dipole Radiation
 

11.1.3      
Friday
11/7/2025

Lecture 30
Larmor Formula
 

11.2.1, 11.2.2  

 

 
Monday
11/10/2025
Lecture 31
Radiation Reaction
 
11.2.3      
Tuesday
11/11/2025

 

 
 
No Discussion


 

Wednesday
11/12/2025
No Lecture  

 

 

 
Friday
11/14/2025

Midterm 2

       
Monday
11/17/2025

Lecture 32
Special Relativity Review
 

12.1.1, 12.1.2  

 

 

Tuesday
11/18/2025
     

Discussion 9

Solutions 9

 
Wednesday
11/19/2025

Lecture 33
Lorentz Transformation
 

12.1.3, 12.1.4      
Friday
11/21/2025

Lecture 34
Relativistic Dynamics
 

12.2

Assign
due Dec 3, 2025 23:59 for 100%
Dec 8, 2025 23:59
 for 75%
HW9

 

 

 
Monday
11/24/2025

Fall Break (no class)

 

 

   
Tuesday
11/25/2025
  Fall Break (no section)

 

 

 
Wednesday
11/26/2025
Fall Break (no class)        
Friday
11/28/2025

Fall Break (no class)

 

 

   
Monday
12/1/2025
Lecture 35
Potential in covariant form
 
12.3.4, 12.3.5

 

 

 
Tuesday
12/2/2025

 

   

Discussion 10

Solutions 10

 
Wednesday
12/3/2025

Lecture 36
Lorentz transformation of E &B
 

12.3.1, 12.3.2, 12.3.3, Assign
due Dec 9, 2025 23:59 for 100%
Dec 11, 2025 23:59
 for 75%
HW10

 

 
Friday
12/5/2025
No lecture        
Monday
12/8/2025

Lecture 37
Electromagnetic Field Tensor
 

12.3.4, 12.3.5      
Tuesday
12/9/2025
     

 

Discussion 11

Solutions 11

 

 
Thursday
12/11/2025

Reading Day

       
Friday
12/12/2025

Exams Start

       
Monday
12/15/2023

Final Exam

8:00AM~11:00AM in Loomis 144