[7] From 2000 to 2017, he was the professor responsible for the research and Ph.D. studies in the field of atmospheric electrical discharges at Uppsala University.
He is the first scientist to show that the basic foundation of all engineering return stroke models are the same even though they are expressed in different mathematical formulations.
[20] He together with Prof. Marcos Rubinstein developed the Cooray-Rubinstein approximation which is frequently used in analysing the voltages induced in power lines by lightning.
[22] He together with Dr. Gerald Cooray illustrated a connection between classical electromagnetic fields and time energy uncertainty principle.
honorary degree from University of Colombo in Sri Lanka,[25] the IEEE fellow membership,[26] the Karl Berger award from the international scientific committee of ICLP,[27] and the best book award from the Atmospheric Science Librarians International (ASLI).