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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
“Having observed this I came to the conclusion that in a medium totally devoid of resistance all bodies would fall with the same speed.”
Galileo: The Starry Messenger, Letter to the Grand Duchess Christina, and Two New Sciences (First Day), Two New Sciences, First Day (p. 72 of the 1914 edition), trans. Henry Crew and Alfonso de Salvio (1914)
After comparing the fall of balls of different metals through water and air, Salviati states the principle that resistance alone separates them.
Citation: "Having observed this I came to the conclusion that in a medium totally devoid of resistance all bodies would fall with the same speed." — Galileo Galilei, Galileo: The Starry Messenger, Letter to the Grand Duchess Christina, and Two New Sciences (First Day), Two New Sciences, First Day (p. 72 of the 1914 edition), trans. Henry Crew and Alfonso de Salvio (1914). (id galileo-selected-writings-q8)
Portrait: Galileo.arp.300pix, Justus Sustermans, Public domain.
