In 1609, Galileo, then Professor of Mathematics at Padua, in the service of the Venetian Republic, heard from a correspondent at Paris of the invention of a telescope, and set to work to consider how such an instrument could be made. The result was his invention of the telescope known by his name, and identical in principle with the modern opera-glass. In a maritime and warlike State, the advantages to be expected from such an invention were immediately recognised, and Galileo was rewarded...

Galileo Galilei had seriously considered the priesthood as a young man, at his father's urging he instead enrolled at the University of Pisa for a medical degree. In 1581, when he was studying medicine, he noticed a swinging chandelier, which air currents shifted about to swing in larger and smaller arcs. It seemed, by comparison with his heartbeat, that the chandelier took the same amount of time to swing back and forth, no matter how far it was swinging. When he returned home, he set up ...

Galileo’s Dialogues Concerning Two New Sciences is one of the greatest works in western science. Written by Galileo in the last years of his life, (while under house arrest by the Inquisition for suspected heresy), the book had to be published abroad and eventually led to Galileo's censure.Written as a discussion between a master and two students, it sets forth a series of experiments and summarizes the conclusions Galileo drew in a brisk, direct style.This is Gali...

As to the first, the last discoveries of Saturn to be tricorporeall, and of the mutations of Figure in Venus, like to those that are seen in the Moon, together with the Consequents depending thereupon, have not so much occasioned the demur, as the investigation of the times of the Conversions of each of the Four Medicean Planets about Jupiter, which I lighted upon in April the year past, 1611, at my being in Rome; where, in the end, I assertained my selfe, that the first and neerest to Jup...

This book contains the following works with an Active Table of Contents -Great Astronomers: Tycho Brahe - Great Astronomers: Johannes Kepler - Great Astronomers: Isaac Newton - Great Astronomers: Nicolaus Copernicus - Great Astronomers: Galileo Galilei - Great Astronomers: John Flamsteed -Great Astronomers: Edmond Halley - Great Astronomers: James Bradley - Great Astronomers: William Herschel - Great Astronomers: Pierre-Simon Laplace - Great Astronomers: William Parsons - Great Astronomers...

The "revolutionary, scintillating book" in which Galileo revealed his wondrous astronomical discoveries, with accompanying notes and historical context (Metascience).Galileo Galilei's Sidereus Nuncius is arguably the most dramatic scientific book ever published. It announced new and unexpected phenomena in the heavens, "unheard of through the ages," revealed by a mysterious new instrument. Galileo had ingeniously improved the rudimentary "spyglasses" that appeared i...

Galileo's telescopic discoveries, and especially his observation of sunspots, caused great debate in an age when the heavens were thought to be perfect and unchanging. Christoph Scheiner, a Jesuit mathematician, argued that sunspots were planets or moons crossing in front of the Sun. Galileo, on the other hand, countered that the spots were on or near the surface of the Sun itself, and he supported his position with a series of meticulous observations and mathematical demonstrations that e...

"And a part of the preface to Kepler's Dioptrics". "Containing the original account of Galileo's astronomical discoveries." According to Wikipedia: "Sidereus Nuncius (usually Sidereal Messenger, also Starry Messenger or Sidereal Message) is a short astronomical treatise (or pamphlet) published in New Latin by Galileo Galilei in March 1610. It was the first published scientific work based on observations made through a telescope, and it contains the results of Galileo's early observations o...

"In this Discussion Kepler gives reasons for accepting Galileo’s observations—although he was not able to verify them from want of a telescope—and entirely supports Galileo’s views and conclusions, adducing his own previous speculations, or pointing out, as in the case of Galileo’s idea of earth-light on the moon, the previous conception of[ix] the same explanation of the phenomenon. He rejects, however, Galileo’s explanation of the copper colour of the moon in eclipses. Kepler ends by exp...

New to Penguin Classics, the astonishing story of the Copernican Revolution, told through the words of the ground-breaking scientists who brought it aboutIn the late fifteenth century, it was believed that the earth stood motionless at the centre of a small, ordered cosmos. Just over two centuries later, everything had changed. Not only was the sun the centre of creation, but the entire practice of science had been revolutionised. This is the story of that astonish...

What if everything you've been taught about time is backwards?Where Time Comes From isn't just a book - it's a handbook for humans navigating reality. Part philosophy, part science, and entirely transformational, this guide reveals how time is not a fixed force outside of us but a responsive, electromagnetic dynamic we participate in with every choice we make.Author Michael Galileo (inventor of the Real Time Earth Clock) shares a deeply original vi...

'The truth which we arrive at by means of mathematical proofs is the same truth that is known to divine wisdom.' Galileo's Dialogue on the Two Greatest World Systems, the most brilliant and persuasive defence of the Copernican theory that the Earth goes around the Sun to have been written in the seventeenth century, is one of the foundation texts of modern science. This new translation renders Galileo's lively Italian prose in clear modern English, making the whol...