Preemptive Video Feedback

Hello Students.  I am in the process of looking at A BUNCH of your videos.  Here are some general notes.  I am posting these here so that I don’t have to put them in every email.

  • There is a good chance I will just reply with a score.  If you want a higher score, feel free to submit another video (but don’t wait too long).
  • Why didn’t you get a higher score?  Here are some options:
    • Your problem was too simple
    • There was an error in your solution
    • Your previous score was quite low (or you missed the in-class assessment)
  • Remember, I put a lot of weight on the actual problem that you solve.  Picking a good problem is a sign that you understand the material.  But that also means that I can’t tell you want problem to do.
  • When in doubt, do a bunch of problems.

Quick Notes

Here are some quick reminders and notes:

  • Dr. Parkinson will be covering class Monday – Wednesday.
  • I will send the Chapter 22 assessment with him to return to you on Monday.
  • I will give everyone full credit for Chapter 23 homework – don’t turn it in though, since I won’t be here.  You still need to do the homework though.
  • Dr. Parkinson will give the in-class assessment (chapter 23) on Wednesday – just like it says on the schedule.
  • I posted some old tests on Moodle – you can use those as practice.
  • Don’t forget that all resubmitted videos are due by July 29 for any video that you first submitted before the initial deadline.
  • I will send you your chapter 22 grades when I have graded them.
  • My plan is to catch up on video grades tomorrow.
  • If you have questions while I’m gone – just email me.

Impossibly Short Summary of Chapter 22

Really, this is mostly for me.  But these are the primary topics for chapter 22.

  • Maxwell’s equations.  I don’t think I would actually ask you an assessment problem about this.
  • Electromagnetic spectrum.  Don’t memorize the different wavelengths and frequencies—but just know that different wavelengths interact differently with matter.
  • Wave properties.  Understand this: v = \lambda f . Also, know what amplitude means for a wave.  Oh, and that the speed of light is constant c = 3 \times 10^8 \text{ m/s}.
  • Index of refraction. The apparent speed of light in a material changes.  The index of refraction is n = \frac{c}{v}.
  • Intensity of light.
  • Polarization.
  • I’m not going to give any questions on the doppler effect.

Equation test

$\vec{F} = \frac{d\vec{p}}{dt}$