Galileo Galilei to Einstein's special theory of relativity. A biography by Galileo's pupil Vincenzo Viviani stated that Galileo had dropped balls of the same material, but different masses, from the Leaning Tower of Pisa to demonstrate that their time of descent was independent of their mass. This was contrary to what Aristotle had taught: that heavy objects fall faster than lighter ones, in direct proportion to weight. While this story has been retold in popular accounts, there is no account by Galileo himself of such an experiment, and it is generally accepted by historians that it was at most a thought experiment
Italian submarine Galileo Galilei briefing between captains and the submarine command in Massawa before every mission. The claim was reported only to cover the British intelligence activities in Italian East Africa. After her capture, "Galileo Galilei" was berthed at Port Said and served as a generating station to charge the batteries of British submarines. She was commissioned into the Royal Navy in June 1942 as HMS "X2" (later changed to "P 711"), and was operated as a training boat in the East. She was scrapped on 1 January 1946. Italian submarine Galileo Galilei Galileo Galilei was an Italian "Archimede"-class submarine built for the Royal