17th cent.
Paper codex; ff. 283 (II + 281); 32x26,3 cm
Florence, Biblioteca Nazionale Centrale, Ms. Gal. 269, f. 51r

Autographed texts bearing witness to the experimental work of Viviani, "the last disciple" of Galileo, in different fields (mechanics, pneumatics, thermometry). The drawing on display summarizes the results of measurements relative to the number of oscillations performed at the same time by pendulums of different lengths.