Dialogues Concerning Two New Sciences (trans. Henry Crew & Alfonso de Salvio)dialogue · 1638 (trans. 1914)DirectVerified quotation — claim 01“I greatly doubt that Aristotle ever tested by experiment whether it be true that two stones, one weighing ten times as much as the other, if allowed to fall, at the same instant, from a height of, say, 100 cubits, would so differ in speed that when the heavier had reached the ground, the other would not have fallen more than 10 cubits.” — Galileo Galilei · trans. Henry Crew & Alfonso de Salvio, 1914Verified quotation — claim 01“But I, Simplicio, who have made the test can assure you that a cannon ball weighing one or two hundred pounds, or even more, will not reach the ground by as much as a span ahead of a musket ball weighing only half a pound, provided both are dropped from a height of 200 cubits.” — Galileo Galilei · trans. Henry Crew & Alfonso de Salvio, 1914Verified quotation — claim 01“the principles, once established by well-chosen experiments, become the foundations of the entire superstructure” — Galileo Galilei · trans. Henry Crew & Alfonso de Salvio, 1914Verified quotation — claim 01“My purpose is to set forth a very new science dealing with a very ancient subject. There is, in nature, perhaps nothing older than motion, concerning which the books written by philosophers are neither few nor small; nevertheless I have discovered by experiment some properties of it which are worth knowing.” — Galileo Galilei · trans. Henry Crew & Alfonso de Salvio, 1914
Sources supporting claim 01
The Sidereal Messenger (Sidereus Nuncius, trans. Edward Stafford Carlos)writing · 1610 (trans. 1880)DirectNo passage is mapped to this claim. Sources are listed for provenance; a quotation appears only when it has been verified for the specific claim.
Discourse Concerning the Natation of Bodies (Floating Bodies, trans. Thomas Salusbury)writing · 1612 (trans. 1663)DirectNo passage is mapped to this claim. Sources are listed for provenance; a quotation appears only when it has been verified for the specific claim.