* Galileo Galilei - Collected Works (19 books)

GALILEO GALILEI (1564–1642) was an Italian astronomer, physicist and engineer widely regarded as the father of observational astronomy, modern-era classical physics, the scientific method, and modern science. He pioneered the use of experimentation and telescopic observation to revolutionize the study of motion and celestial mechanics, providing fundamental evidence that supported the Copernican heliocentric model of the solar system.

Galileo studied speed and velocity, gravity and free fall, the principle of relativity, inertia, projectile motion and also worked in applied science and technology, describing the properties of the pendulum and "hydrostatic balances". He was one of the earliest Renaissance developers of the thermoscope and the inventor of various military compasses. With an improved telescope he built, he observed the stars of the Milky Way, the phases of Venus, the four largest satellites of Jupiter, Saturn's rings, lunar craters and sunspots. He also built an early microscope.

His early works on dynamics, the science of motion and mechanics were his On MOTION (De Motu, c. 1590) and ON MECHANICS (Paduan Le Meccaniche, c. 1600). THE STARRY MESSENGER (Sidereus Nuncius, 1610) was the first scientific treatise to be published based on observations made through a telescope. Galileo published a description of sunspots in 1613 entitled LETTERS ON SUNSPOTS suggesting the Sun and heavens are corruptible.

Galileo's championing of Copernican heliocentrism was met with opposition from within the Catholic Church and from some astronomers. He was tried by the Roman Inquisition in 1615, found "vehemently suspect of heresy", and forced to recant. Galileo later defended his views in DIALOGUE CONCERNING THE TWO CHIEF WORLD SYSTEMS (1632), which appeared to attack and ridicule Pope Urban VIII, thus alienating both the Pope and the Jesuits, who had both strongly supported Galileo until this point. He spent the rest of his life under house arrest. During this time, he wrote TWO NEW SCIENCES (1638), primarily concerning kinematics and the strength of materials.

According to Stephen Hawking, Galileo probably bears more of the responsibility for the birth of modern science than anybody else, and Albert Einstein called him the father of modern science: "The leitmotif I recognize in Galileo's work is the passionate fight against any kind of dogma based on authority. Only experience and careful reflection are accepted by him as criteria of truth."


The following books are in ePUB and/or PDF format as noted:

* Cause, Experiment, and Science: A Galileon Dialogue [tr. Drake] (Chicago, 1981) – PDF
* Collected Works (Delphi Classics, 2017) – ePUB
* Dialogue Concerning the Two Chief World Systems [tr. Drake, 2e] (Modern Library, 2001) – PDF
* Dialogue on the Two Greatest World Systems [tr. Davie] (Oxford, 2022) – ePUB
* Discoveries and Opinions of Galileo [ed. Drake] (Anchor, 1957) – PDF
* Essential Galileo [ed. Finocchiaro] (Hackett, 2008) – ePUB + PDF
* Galileo on the World Systems [abridged] [tr. Finocchiaro] (California, 1997) – PDF
* The Galileo Affair: A Documentary History [ed. Finocchiaro] (California, 1989) – PDF
* Galileo's Early Notebooks [tr. Wallace] (Notre Dame, 1977) – PDF
* Galileo's Logical Treatises [tr. Wallace] (Springer, 1992) – PDF
* On Motion, and On Mechanics [tr. Drabkin & Drake] (Wisconsin, 1960) – PDF
* On Sunspots [tr. Reeves & Van Helden] (Chicago, 2010) – ePUB + PDF
* Selected Writings [tr. Shea & Davie] (Oxford, 2012) – ePUB
* Sidereus Nuncius, or A Sidereal Message [tr. Shea] (Science History, 2009) – PDF
* Sidereus Nuncius, or The Sidereal Messenger [tr. Van Helden, 2e] (Chicago, 2015) – ePUB
* Telescopes, Tides, and Tactics: A Galilean Dialogue [tr. Drake] (Chicago, 1983) – PDF
* Thus Spoke Galileo [ed. Frova & Marenzana] (Oxford, 2006) – PDF
* Two New Sciences [tr. Drake, 2e] (Wall & Emerson, 1989) – PDF
* Two New Sciences: for Modern Readers [tr. De Angelis] (Springer, 2021) – PDF


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