Here is a lab for today's class, a last bit of optics before we move on.
Our next topic will be quantum physics. I do not, as yet, have notes for this topic. Don't fear: if you've had a chemistry course or two, I doubt you will need any. I'll discuss this more in class.
After about a week of quantum physics, we are on to atomic physics, and finally we will end with nuclear physics. Time flies, we are nearly done.
Well, well, you are more clever than I thought you were :-)
The class average - including the bonus question - was 88.0%, with a standard deviation of 11.7.
Without the bonus question, those numbers are 83.6% and 11.3, respectively. I consider this to be a better measure of how you all did (the bonus question is just free points, basically). Well done, many of you raised your grade significantly. The bonus point, on average, added 2.7 points to your score ... for what basically required you to remember a demo I did in class, or read the notes.
Here are some pretty plots to tide you over until I pass back your individual exams ... tomorrow in class. Click for a larger image.
Some comments: numbers 4 and 8 were not popular, nor were the scores very high. For the former, I blame this on not covering the quantitative aspects of filters enough. For the latter ... it was simply a tricky problem. Number 2 also had a slightly lower average. Much of that was due to not realizing you had to add the field from both wires (HINT for homework), but the problem did involve several different steps.
Sources of some of the problems:
2 - related to examples in the notes, loosely
3 - nearly identical to example in the notes, ch. 7
4 - essentially identical to a HW 8 #2
5 - you hadn't seen an LC filter before ... good work.
6 - related to HW 9 and notes problems
7 - just geometry, nothing more
8 - a question on the first lenses lab ...
Here is the exam you took today.
Your homework, due Mon 14 April at 5pm, is to solve the two problems you did not attempt on the exam.
After finishing proofreading the exam and making a formula sheet, I quickly took the exam myself. Solving the exam, fixing typos/errors, and checking that the formula sheet had everything you needed took me 32 minutes.
I expect you can do the exam in an hour if you don't need to use the formula sheet, since you only have to do 75% of the problems, and don't have to proofread per se ...
I think you are well prepared for the exam. Read all the problems first, and choose your 6 wisely. Solve the ones you really know the best first, and work your way down. Time management is crucial, so don't get stuck anywhere - carefully read all the problems first, it will save you time in the end. There will be heavy partial credit, like on the homework, so show all your work - demonstrating you know what you are doing even with a numerically wrong answer is worth a lot of points.
And, for the night owls (or early risers I suppose), your formula sheet is here. You're better off reading homework solutions at this late hour though.
So far I only have solutions for the first two problems. Over the next hours I will be updating the solutions ... hopefully all or most of them will be posted by 10pm.
Here is what I have so far. Check it every hour or so starting at 8pm ... I'll update this post when they are complete.
Exam-wise: study the quiz and homework solutions, and you will be fine.
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UPDATE 10pm: rough solutions are finished for 1-3, 7-9. I have to finish writing the exam now, so problems 4-6 will have to wait until at least 11:30 ...
