In questa prolusione commemorativa, Ignazio Galli traccia un ritratto affascinante e coinvolgente di Pangelo Secchi, celebre astronomo e fisico italiano del XIX secolo. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely...