Dr. Wolfgang Kessel
Dr.rer.nat. Wolfgang Kessel was employed by the national metrology institute of Germany (Physikalisch-Technische Bundesanstalt) (PTB) as a scientist. He was working for the project 2.020 "uncertainty of measurement in industrial and legal metrology" in his last years at the PTB.
Dr. Wolfgang Kessel died January 11th 2009, far too early, because of cancer.