Dal tramonto all'alba. Breve ricognizione sulla fisica italiana nel primo trentennio del XIX secolo

This paper presents an overview of the state of scientific research in physics in the Italian peninsula for the first thirty years of XIX century. In doing so, we focus geographically on the Kingdom of Sardinia and the Lombardo - Veneto territories, because of the role played in the development of Italian physics and the political future of the peninsula; we line out a quantitative analysis of the scientific community using basic tool of graph theory; we somehow try to avoid the major personalities of the century (e.g. Volta, Avogadro, Lagrange) to highlight the development of the local communities. The language of the paper is Italian.