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 but science in general, with a particular slant towards young people. Asteroid 697 Galilea is named in his honour. Galileo is mentioned several times in the "opera" section of the Queen song, "Bohemian Rhapsody". He features prominently in the song "Galileo" performed by the Indigo Girls and Amy Grant's "Galileo" on her "Heart in Motion" album. Twentieth-century plays have been written on Galileo's life, including "Life of Galileo" (1943) by the German playwright Bertolt Brecht, with a film adaptation (1975) of it, and "Lamp At Midnight" (1947) by Barrie Stavis, as well as the 2008 play "Galileo Galilei". Kim Stanley