This week we wrap up Ch. 5 (Vector potential, and magnetic dipoles) and head towards thinking about B-fields in matter. Just like E fields in matter (dielectrics) polarize the material, we will get very analogous effects with B fields - with a few new twists.

Special notes

• FCQ's are online, and open now. Please don't forget to do this, FCQ's are important to the physics department, and your feedback is important to me.
  You should have received an email from CU with instructions. If not, here's what they wrote to me:
  
  1) STUDENTS SHOULD CHECK THEIR EMAIL ACCOUNT'S SPAM FOLDER FOR THEIR ONLINE FCQ INVITATION, and/or
  2) students can go to https://fcq.colorado.edu/ucb_fcq.htm and follow its directions to submit their online FCQ
  
  
• Homework is HW 13 (Due Wed, Apr 17)
  
  
• Next homework is HW 14 (Due Wed, Apr 24) (I had the wrong link before, so if your browser pulls down HW13, try again. If it "caches" the link and you can't refresh it, go to the usual "Calendar" link and find HW14 near the bottom.
  
  
• Next preflight is up! (Good to do for Friday, but I won't collect it till Monday at 12 PM)
  
  
• Note: I originally made a small error in grade computation (I forgot that even without the extra credit, Exam 2 was out of 104 points, not 100 points, so I *slightly* overestimated your grades. D2L now has the corrected results.
  
  
• Please visit our piazza site. I give extra credit for participation there. (The more who do that, the more useful it becomes to the rest of us.)
  We also have a D2L (learn.colorado.edu) site - I post solutions there
  
• Video lectures:here.
  
  

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  OLDER Webpages: Week 1, Week 2, Week 3, Week 4, Week 5, Week 6, Week 7, Week 8, Week 9, Week 10, Week 11, Week 12,
  
  

I welcome your comments on the class and this website. Send them to steven.pollock at colorado.edu
(Thanks to Prof. Chuck Rogers for many of our home page image ideas!)