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.

cool guy, take him if u want to learn, don't if u just want it easy.

most importantly, what I like about this professor is that he teaches well. He tests the concepts he emphasises on, and it is relatively easy to get an A in his classes without obsessing over them like most try-hards do
(yeah I mean the Knudsers.. who spend all their day in the physics building)

He is easily readable. You can tell what he will test you on by how big his smile is when he teaches the concept. Focus on the topics that bring out his ( inspiring but lowkey cringy) enthusiasm .... and you ll get the A

cool guy, take him if u want to learn, don't if u just want it easy.

most importantly, what I like about this professor is that he teaches well. He tests the concepts he emphasises on, and it is relatively easy to get an A in his classes without obsessing over them like most try-hards do
(yeah I mean the Knudsers.. who spend all their day in the physics building)

He is easily readable. You can tell what he will test you on by how big his smile is when he teaches the concept. Focus on the topics that bring out his ( inspiring but lowkey cringy) enthusiasm .... and you ll get the A