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

Lemme tell you a thing or two about Chris Regan.

First of all, full disclosure I love Regan and the way he teaches this class. He probably teaches it the best out of what I've heard since I heard Paul Hamilton spent nearly half of the quarter on review in Fall. If Regan did that I think I would lose my mind. I will say, his homework was a lot, and his office hours seemed shitty since he would just go on rants. If you have homework questions, definitely find a friend or pray you have a good TA like we did.

If your goal is to do minimal work and get this class over with, maybe wait for someone other than Regan. However, if your goal is to learn and be excited to go to class then DEFINITELY TAKE IT WITH REGAN.

Some specifics:
- he spent one week on review (which I liked since I wanted to learn new shit).
- He baited us by teaching us geometric algebra, and it will seem wacky at first but its properties give INSANE intuition for Pauli spin algebra.
- He also taught way out of the book with the Dirac equation, which was fucking sick.
- lastly, his exams were super fair. Even if the homework might have been rough at times, he yoinked problems straight from the work and practice exams up to just legit changing numbers on some of em.
- most importantly, I was actually excited to go to class every day and I always felt like I was learning something new.

TLDR: teaches well, hw rough, but ez exam and curve make up for it.

Professor Regan knows his stuff, and that's an understatement. He clearly has an extraordinary grasp of quantum mechanics and does his best to impart that to students. There's two downsides to this, though. The first is that it makes it hard for him to realize that students may have some difficulty with the concepts. They might be second nature to him, but they're entirely new to us. Yet he assumes that we are as comfortable as he is, and races through topics like the goddamn Road Runner getting away from Wile E. Coyote. The other problem, though (and this is arguably the worse of the two), is that Regan's self-perceived mastery of physics makes him an insufferable asshole. Just absolutely so far up his own ass, he's basically wearing his head as a beret.

With that said, I will reiterate that Regan is very knowledgeable, and he does at least try to share that with his students. Sometimes he goes a bit too far and too fast, but it's clear he is making an effort, which I appreciate. And it works. I do feel like I have learned a good amount in this class, that I may not have if he had not focused on the fundamentals like he did. In addition, his exams are insanely difficult and nearly impossible to finish in the allotted time, but he seems to be fair about grading and curving them, so the end result isn't too bad. Moral of the story then: really smart guy, raging asshole, medium teacher overall.