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 (opera) aged Galileo, blinded from having looked at the sun too often and ends with him as a child. This is related to his invention of the telescope, which works by reversing images with lenses. Much of the staging in this production is representative of Galileo's theories and follows the patterns of the discoveries, planets, and constellations that his inventions made known to the world. "Opening Song" In the final days of his life, the now blind Galileo Galilei remembers the things in his life that he can no longer see. "Recantation" The officials of the Catholic Church rebuke the scientist