I studied technical chemistry. After that I worked for 3 years at a shipyard, 2 years in dairy research and 3 years in the plastics industry. The last 32 years I worked for the Hamburg University of Applied Sciences (Germany). I worked in the process engineering laboratory for 14 years and in the ergonomics laboratory for 18 years. I taught the students how to do the laboratory experiments, always trying out new ideas in order to optimize my teaching style. Now I am retired.