Ph.D. in Physics (cosmic rays), retired from the Swedish Radiation Safety Authority. I worked with the Swedish high level waste standard. I also took pleasure in philosophical work such as editing the Nordic project on information conservation, about informing future societies about waste repositories (for 100 000 years or more) related to the so called future human intrusion scenario (see the movie Into Eternity, google “Mikael Jensen radioactive” or “Mikael Jensen waste NKS study”).
I am a dedicated mathematics amateur, with an interest in classical number theory and logic. My sloppiness (or dyslexia light?) prevented me from more advanced math studies (any conclusions about experimental physics?) but thanks to Wolfram Alpha I can now manage complicated expressions (with more than two terms) without losing half the components.