Regan: cool funny guy
tests: crazy hard
homework: ALOT
hbar: stupid human constant
don: enlightened
the curve: GNARLY

fr fr tho, prof is super dope, funny and knowledgeable. He teaches QM with his own twist, which was weird at first but later it kind of grows on you.

Definitely a challenging course that demands a lot of effort and time. Lecture notes are very helpful. This class is rather unique in that we spend considerable time thinking about definition of momentum and questioning and parameterizing the framework of classical mechanics as well as the postulates of quantum mechanics. I enjoyed the historical view and the general freedom to question assumptions. However, there are considerable downsides: I really, really don't appreciate his attitude. The professor seems to lack the ability to read the room and comes off really poorly when it comes to explaining concepts or ideas you aren't familiar with. At least from what I was seeing, he contributes toward an unhealthy learning environment, not in terms of class content or fluidity of information, but an unspoken shame towards students who aren't quickly proficient and a suppression of basic, clarifying questions that some students may be afraid to ask. I would recommend utilizing a good teacher's assistant, tutor, or friends/other students in the class, especially with this particular professor. Thing is, he seems like a nice person, and doesn't necessarily intend to come off this way.

Regan is a cool dude and liked to joke around a lot. The tests in this class are pretty difficult and the homework often took forever to complete. Regan also likes to start the class off with special relativity which was surprising to say the least. In fact, the SR in this class is harder than what I did in 105B but it was admittedly more helpful than what was done in 105B. After that, though, the class was what you'd expect out of a QM class.
Also, the curve in this class is fucking great so that always helps.
Overall, the class was genuinely fun and I would recommend taking a class with Regan if you get the chance.

Regan's such a cool guy. He loves QM. He teaches you to appreciate a more elegant formalism of physics that used wavenumbers and frequencies instead of momentum and energy. Tests are moderately hard but generally exciting. Homework is long and generally not that fantastic. He also covers relativity in an abstract, linear algebra-heavy, but informative manner. It's hard but rewarding.

Take this class. You'll love it, and it's worth the work.

Regan is...interesting. He skips the Physics 17 review that's scheduled in the beginning of 115A and focuses on special relativity: his favorite. As you make your way through 115A with Regan, you'll see that he has a problem with h_bar, energy, momentum, mass, and Griffiths. Anyway...here's a longer breakdown:

1) He assigns a lot of homework. Problem sets are mostly from the textbook (which is good), but the Regan specials are a hit or miss. His lectures are not that helpful for the HW (as he kinda just talks about what he finds interesting), but once in a while (maybe the day before the HW is due), he will say some useful stuff for the HW. He expects you to read the textbook (without telling you to read the textbook), so read and do the HW.

2) His exams are...interesting. If he gives a question similar to the textbook, be sure to get full points on that. The Regan specials are hard to do. Most of the time, I'm not sure what he's asking on his questions. If you can reach him during the exam to get clarification, please do so. HIs questions aren't necessarily impossible, but they are just worded confusingly. If exams were in-person (or synchronous), I would've asked for clarification and scored better. His curve is nice though, so that's good.

Overall, Regan is a funny guy. He's very likeable and is happy to talk to you about almost anything during office hours. He loves physics and he wants you to love physics too. But, his exams weren't that good and he thinks we can work faster than we actually can. If you have to take Regan, it's not the end of the world (as his class was kinda fun), but be prepared to do some work.