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
Galileo Galilei Institute for Theoretical Physics Scientific and Advisory Committees. The appointed members of the Launching Committee were David Gross, Giuseppe Marchesini, Alfred Mueller, Giorgio Parisi and Gabriele Veneziano (chair). Galileo Galilei Institute for Theoretical Physics The Galileo Galilei Institute for Theoretical Physics (GGI) is a research institute near Florence, Italy. It "organizes and hosts small-size advanced workshops in theoretical particle physics in its broadest sense." Each workshop is devoted to a specific topic at the forefront of current research. During its typical duration of 2–3 months it hosts about 10 to 30 participants selected among those most active in the field within the international community.