A detail from the frontispiece of Cassini’s book La meridiana del tempio di S. Petronio, showing the sun shining into San Petronio and onto the meridian line. INTERNET ARCHIVE/PUBLIC DOMAIN
A detail from the frontispiece of Cassini’s book La meridiana del tempio di S. Petronio, showing the sun shining into San Petronio and onto the meridian line. INTERNET ARCHIVE/PUBLIC DOMAIN
