Galileo Galilei to the biography by Vincenzo Viviani) that these began by watching the swings of the bronze chandelier in the cathedral of Pisa, using his pulse as a timer. Later experiments are described in his "Two New Sciences". Galileo claimed that a simple pendulum is isochronous, i.e. that its swings always take the same amount of time, independently of the amplitude. In fact, this is only approximately true, as was discovered by Christiaan Huygens. Galileo also found that the square of the period varies directly with the length of the pendulum. Galileo's son, Vincenzo, sketched a clock based on his father's
Italian submarine Galileo Galilei scene and Mazucchi, as the most senior on board the submarine, ordered "Galileo Galilei" to stop shooting and surrender. The submarine had lost 16 men: commander Nardi, four other officers, seven NCOs and four sailors. The submarine was then towed into Aden by "Kandahar". Though the British side claimed that the submarine's codebooks and operational documents were captured intact by the Royal Navy, and revealed the exact position of other Italian naval units, Italian survivors (including Ensign Mazzucchi) reported that every document was destroyed before surrender, and that no written operational orders were issued to Italian units, only an oral