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.