In the 2019/20 school year, from the collaboration between the "G. Giorgi" Professional Institute of Lucca and the Barsanti and Matteucci Foundation, a project arose that engaged the students of the 5th class guided by their teachers. The result of their work is this video, which tells, in simple words, the story of the invention that changed the world and of the two scientists from Lucca, who for a long time remained unrecognized.