I was educated up to PhD as an experimental physicist, but most of the time I spend as a lecturer of classical physics to undergraduate students of engineering. Therefore, I am getting help at TeX forum in order to prepare materials for students, and giving help at physics forum due to my experience as a lecturer. Consequently, my answers are oriented on students and explaining basic physical knowledge, which means that I am much less concerned about deep theoretical questions on principles, which are prevalent on StackExchange. Cheers!