He is an interested and goo-natured professor. He is supportive of all students and he will reassure students that are struggling. I really appreciated that because I am not the best at physics. He had iClicker a few times and his tests were very similar to the Sapling assignments.

Professor Geller is awesome. The man is a genius and is a fantastic instructor. He is very reasonable when it comes to expectations of students, but he also loves to push them.

Professor Geller is great! He conducts his lectures at a steady pace, and he loves answering student questions. Attending lectures was necessary for comprehension, and CLAS helped a lot too, but overall class was fair. No surprises on tests.

Professor a fraud and un trustworthy beware

Geller has my respect above most professors. He is very understanding. He cares about his students truly wants them to do well. However, that does not mean his class is easy it is sometimes not that interesting either I am not a fan of physics, nor am I very good at it.. But he made it so worth it and this was by far my favorite physics class.

Though the material is not that hard, Prof. Geller makes the class annoyingly more difficult. He grades homework based on accuracy, which is somewhat annoying. The lectures are pretty helpful, and he doesn't assign insane amounts of homework, but the fact that he grades homework and uses iClicker means attendance is pretty much mandatory.

I thoroughly enjoyed Geller as a professor. I think he was one of my favorite professors at UCSB. There were some very challenging concepts, but Geller had a way of making them seem simple enough for me to understand for the test. He was very generous to us this quarter regarding the events that occurred. Also, homework and iClicker help a lot.

Professor Geller is great! He's a very kind person and makes lectures interesting by focusing on more interesting topics and frequently using demonstrations. Super fortunate to have him for Physics.

Super helpful and understanding professor. He makes the lectures interesting. Homework and exams are fair. You can tell he cares about his students a lot.

Geller is one of the best professors I've had at ucsb. I hate physics but he makes it as clear as possible and his exams are fair.

DONT LET THE NAME FOOL YOU. Its a really hard class and the Geller is just a horrible teacher. He speeds throughout the lecture and expects us to already understand the concepts without him really explaining them. He shows no interest in having his students succeed and his midterm was ridiculous. DO NOT TAKE THIS CLASS! NOT FUN!!!

Professor Geller is a great professor. He is so willing to answer questions that he would often stop lecture just so we could ask questions. For the midterm and final, really understand the CONCEPTS he teaches in class, and keep an ongoing list of equations, you get to use a cheat sheet for both tests. By far my favorite professor

Geller is a good professor but you will have to study for his tests. He provides plenty of demos to reinforce the general concepts of physics and as long as you can understand these principles, you should do well. The tests are difficult, but are manageable if you study both the book examples and the homework assignments, you should be fine.

There is no way to prepare for his midterm and final. The only reason why you need to go to lecture is for the iClicker because the rest of it is full of pointless demos. Do the mastering physics and understand it, and hopefully make some good guesses on the test and you will be okay. Just don't expect an A.

Geller is a nice person not a good teacher.I felt like I exhausted all my options with this class & still did not pass.I attended clas,did the homework & studied for the exams.The midterm and the final were very difficult,no way he prepares us for the exams.He does some cool demos but I mean I don't think I could've done anything else to do better.

He wastes his time on demos that don't even work. Class is useless, the textbook is useless because he gets the questions from the test out of NO WHERE. He expects you to just know everything, when he is inept at teaching crap. Don't take him unless you absolutely must. or if campagnari is your only other choice.LOL

Really interesting lectures but his tests are SUPER DIFFICULT. Homework is much more challenging than the lecture material and the tests are completely impossible. His advice is to do the book problems before the test so I would do everything and I still ended up with a bad grade. The class isn't really curved, there's just a grade bump to help..

while he may be a good physics lecturer he makes his tests extremely difficult. you can do all the homework and problems in the book but he throws a curve ball at you on the tests presenting you with problems that are 10 times more difficult than the ones in the book/hw.

Geller's lectures are very interesting and he is extremely good at clarifying difficult concepts. The course will be extremely easy if you are math oriented, but not impossible if you aren't. Weekly homework from the textbook, i-Clicker during lecture. 90% of test material is from lecture. I got an A without doing much textbook reading.

Geller's great! His lectures are clear, and he keeps astronomy pretty interesting/fun. The class isn't that difficult if you start the homework early and if you have some interest in science/space. Make sure you understand basic concepts before tests. I never went to section and still got an A-. Still wish he curved though!

Seemed like a nice guy and performed some interesting demos in class, but other than that his class was extremely boring. Class was also very hard. there were weekly hw assignments that took a long time to do. i assumed all this work would prepare me for the midterm and final but those were still extremely hard. DONT TAKE THIS CLASS!!!

BEWARE: Geller is a nice guy and is very helpful. However, if you're thinking about taking Astro for a GE, don't. The class is VERY challenging. Attendance is mandatory (for clarity on complex concepts and iclicker). He gives weekly HW assignments and CLAS is absolutely neccesary. Class average for midterm was a D-/C- and he didnt curve.

Geller is awesome. He's funny, teaches fairly well, and keeps the class light-hearted. The material may seem a bit daunting at first, but if you read the book and go to lecture, it's quite easy and interesting.

Geller is the man. He does a great job teaching the physics series for bio majors - there is a good balance between conceptual and quantitative analysis. Finals are generally harder than midterms, but still very fair - if you know the material you will do well.