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Quotation from Galileo: The Starry Messenger, Letter to the Grand Duchess Christina, and Two New Sciences (First Day) by Galileo Galilei
“Aristotle says that "an iron ball of one hundred pounds falling from a height of one hundred cubits reaches the ground before a one-pound ball has fallen a single cubit." I say that they arrive at the same time.”
Galileo: The Starry Messenger, Letter to the Grand Duchess Christina, and Two New Sciences (First Day), Two New Sciences, First Day (pp. 64-65 of the 1914 edition), trans. Henry Crew and Alfonso de Salvio (1914)
Salviati answers Simplicio's doubt that a bird-shot falls as fast as a cannon ball.
Citation: "Aristotle says that "an iron ball of one hundred pounds falling from a height of one hundred cubits reaches the ground before a one-pound ball has fallen a single cubit." I say that they arrive at the same time." — Galileo Galilei, Galileo: The Starry Messenger, Letter to the Grand Duchess Christina, and Two New Sciences (First Day), Two New Sciences, First Day (pp. 64-65 of the 1914 edition), trans. Henry Crew and Alfonso de Salvio (1914). (id galileo-selected-writings-q7)
Portrait: Galileo.arp.300pix, Justus Sustermans, Public domain.
