He was the author of some studies on the aurora borealis , comets , and the effects of lightning , as well as of an important but unpublished work on flat and spherical trigonometry .
He was a professor of mathematics and philosophy .
professor was the professor of some studies on the aurora borealis , comets , and the effects of lightning , as well as of an important but unpublished work on flat and spherical trigonometry .
He was a professor of mathematics and philosophy .