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 affair Galileo and the Galileo affair, there have also been several treatments in historical plays and films. The Museo Galileo has posted a listing of several of the plays. A listing centered on the films was presented in a 2010 article by Cristina Olivotto and Antonella Testa. Galileo affair The Galileo affair () was a sequence of events, beginning around 1610, culminating with the trial and condemnation of Galileo Galilei by the Roman Catholic Inquisition in 1633 for his support of heliocentrism. In 1610, Galileo published his "Sidereus Nuncius" ("Starry Messenger"), describing the surprising observations that he had made with the