 Towards the end of 1889 he was called to the University of Bologna, his home city, where he worked for the rest of his life on subjects such as the Zeeman effect, 'Roentgen rays', magnetism and the results of Michelson's experiments.Righi was the first person to generate microwaves, and opened a whole new area of the electromagnetic spectrum to research and subsequent applications.His work "L'ottica delle oscillazioni elettriche" (1897), which summarised his results, is considered a classic of experimental electromagnetism.