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
Alessandro Galilei Roman artistic circles but was admired later in the century by French and British neoclassicists. Galilei also built the more conventionally Baroque façade for San Giovanni dei Fiorentini (1734), where the cornice between lower and upper stages breaks forward at center and ends, and niches between engaged Corinthian columns and sculptural detail all provide the Baroque light-and-shade. He died in Rome. Alessandro Galilei Alessandro Maria Gaetano Galilei (25 August 1691 – 21 December 1737) was an Italian mathematician, architect and theorist, a member of the same patrician family of Galileo. Born in Florence, he received architectural and engineering training from