He's not a very clear lecturer because he has an accent but after taking other physics professors, I actually thunk he's the best physics professor at UCSB. Nicknamed Mr. Diis... go to lecture and you'll see why! His demos were the best part of lecture and he really makes the class fun. Take CLAS for sure if you want to get an A though.

He was a cool funny old guy. His experiments in class were funny. but in terms of his teaching, all he does is derive equations. Also, his grading is 25% for each of the 2 midterms and 50% final. There is no buffer with homework or anything but he does curve down to an 85% for an A.

He is a precious older man and will make you laugh, but his teaching is simply not helpful. He proves standard equations true but hardly does any practice problems to put the information into context. In order to pull of a B- I had to hire a private tutor, because the CLAS guy wasnt helpful (to me) at all.

Incredible professor! He is hilarious to watch and is incredibly knowledgeable. He made physics fun and knows how to explain everything. You have to be an active learner and ask him questions or else he'll blast through the material. Easily the best professor I've had at UCSB

Very smart, definitely knows what he's talking about. He's funny and his questions make you think. I could see his classes being difficult for somebody who doesn't like physics, however. I've had him as a teacher for 3 classes now and would choose him over most other physics professors here.

Worst professor in my 4 quarters at UCSB. He made me dislike physics with a passion because of his lack of knowledge, messy hand writing, and useless lectures where he taught nothing and just wrote formulas on the board. I was lucky to get an A because his tests are not easy, even if you study the practice exams he gives you. Avoid at all costs.

I don't know why people think he's a good professor. He's a nice guy and acts like a cute grandpa, but all he does is derive equations on the overhead. I don't understand anything he is saying and he doesn't teach us how to do any of the material. I had to teach myself everything. I went to every lecture and took notes and it still didn't help.

Roig is such a funny professor, he will make your day! Does a demonstration every lecture. Midterms are easy to study for- just do the practice midterms. For final, you need a bit more practice and it's worth 50% of your grade. Course gets harder as you go on. Take Roig! 8/10

I went to all the lectures because CLAS suck but if there is a good CLAS teacher then going to lecture is unnecessary. Just don't make stupid mistakes and you will be fine.

Great professor, the material was hard, but that's the material. Otherwise, he's one of the few researchers that really tries to teach, and he does a pretty good job at it. Just watch out for his pretty bad handwriting.

I totally bombed the final (50%) but got (85%) on the midterms and I still got a B- He grades high, if you have an 80% its actually a B+. You only have to get an 85% to get an A-. The midterms are exactly the same as practice exams, final too. Definately an easy class. I never studied and I got a B-. There wasnt any homework either, dont need it

I have no idea why people like him, he made me hate physics, you just don't get what he says, he writes down formulas and thats it, no explanation, I did not learn anything.