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
SS Galileo Galilei the same year the Galileo Galilei was withdrawn from service and laid up again. In 1983, the vessel was purchased by Chandris Group. The ship was again rebuilt, this time with additional cabins on her forward deck, and her name shortened to "Galileo". In 1984 the Galileo began cruising on the Caribbean under Chandris' Fantasy Cruises brand. After the collapse of Home Lines in 1988 Chandris' executives decided to create a new upmarket brand to take over the market segment occupied by Home Lines. With this in mind the Galileo sent to a multimillion-dollar refit at Lloyd Werft, Bremerhaven, Germany