kinda hard but funny and wants to help

Fun and nice. Very helpful. Great demonstrations end engaging lectures.

Geller is an awesome teacher. The tests were really straight forward. Some multiple choice and a few write out probs. Usually 1 prob. to weed ppl out. makes lectures interesting & aplicable. the only complaint is that he does very few actual examples probs. in class, & more conceptual stuff. Would recommend.

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really great if you can get through some painful learning. hard as hell tests unless ur a natural at physics. also, take it just to watch in class demos...he's awesome and always enthused. i really enjoy that he brings life to a sometimes dull subject.

funny hair and great examples in class

Cant teach the material, goofy, hard tests, cant teach, not a good teacher, dosn't teach well, dosen't know how to teach.

The best physics professor, shown by his class being FULL every single quarter.