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image of Nuncius

title RIASSUNTO /title

Vengono qui descritti due orologi Italiani del Rinascimento in cui utilizzato un rarissimo congegno equalizzatore della forza della molla motrice, il cosiddetto 'stackfreed verticale', fratello maggiore del ben noto stackfreed orizzontale, comune negli orologi da persona tedeschi dopo il 1540 circa. L'invenzione di entrambi risale al XV secolo. Sorprendentemente chiara e concorde la documentazione, che qui viene messa in luce, di eminenti testimoni oculari quali Leonardo da Vinci, Girolamo Cardano e Taqi al Din a proposito di questo poco noto ma significativo sviluppo.

Affiliations: 1: Museo Poldi Pezzoli, Milano; 2: British Museum, London


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