Unhappy with his job , Georg began writing an elementary textbook on geometry as a way to prove his abilities .
The Bavarian government offered him a post as a teacher of mathematics and physics at a poor quality school in Bamberg which Ohm accepted in January 1813 .
Unhappy with Ohm 's job Ohm Georg began writing an elementary textbook on geometry as a way to prove his abilities .
The Bavarian government offered him a post as a teacher of mathematics and physics at a poor quality school in Bamberg which Ohm accepted in January 1813 .