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 addition to and already being operated by the Falangists) to the Spanish Legion (Legión Española or Tercio de Extranjeros). "Galileo Galilei" was one of the four boats chosen for the transfer. On 26 September 1937 "Galileo Galilei" arrived at Soller on Mallorca. She was placed under the direct command of Spanish admiral Francisco Moreno, was renamed "General Mola II" and assigned pennant number L1. However, "Galileo Galilei" retained her commander (captain Mario Ricci), senior officers and Italian crew, but they had to wear Spanish uniforms and insignia. The other three Italian submarines transferred to Tercio were ("Aguilar Tablada"), ("Gonzalez Lopez")