Regan is a little unconventional. I really enjoyed the class though. We started off with some things that were quite confusing (some stuff combining special relativity and quantum mechanics, including a very complex lecture on deriving E&M from local gauge invariance) but everything was mostly explained by the end and it connected together pretty well. The homework is long and hard, so go to office hours (which are really helpful, also he sometimes covers interesting additional content not in the class). The tests were actually not that bad; they're almost identical to the practice midterm (and one question on midterm 2 was copied word-for-word from midterm 1). Lectures are both on zoom and recorded, but I'd recommend going in person. I'm looking forward to taking Physics 17 with him in the fall.

P.S. he hates ħ, ε, μ, and c. And Ben Franklin.

Great professor. And this was the first course he taught!

Lectures were clear and there was always a clear purpose to what he was lecturing about - something that not all Physics professors are good at. He writes the relevant Maxwell equations down at the beginning of every class to get us oriented, then goes on with the lecture at a good pace: neither too fast nor too slow.

Tests (save the second midterm) were hard enough to be challenging, though not so hard as to be impossible. Homework is all from the book, and mostly doable: my only complaint is that the math got pretty ridiculous a few times, and there was no reason to make it that way - the Physics could still be understood with simpler integrals.

He also had a good sense of humor before the tests, which let off some of the stress.