Galilei is a surname, and may refer to:

Two craters have been named for Galileo Galilei, with a different spelling;

See also

And yet it moves

"And yet it moves" or "Albeit it does move" (Italian: E pur si muove or Eppur si muove [epˈpur si ˈmwɔːve]) is a phrase attributed to the Italian mathematician, physicist and philosopher Galileo Galilei (1564–1642) in 1633 after being forced to recant his claims that the Earth moves around the immovable Sun rather than the converse during the Galileo affair.In this context, the implication of the phrase is: despite his recantation, the Church's proclamations to the contrary, or any other conviction or doctrine of men, the Earth does, in fact, move (around the Sun, and not vice versa). As such, the phrase is used today as a sort of pithy retort implying that "it doesn't matter what you believe; these are the facts."

Galilean invariance

Galilean invariance or Galilean relativity states that the laws of motion are the same in all inertial frames. Galileo Galilei first described this principle in 1632 in his Dialogue Concerning the Two Chief World Systems using the example of a ship travelling at constant velocity, without rocking, on a smooth sea; any observer below the deck would not be able to tell whether the ship was moving or stationary.

Galilean transformation

In physics, a Galilean transformation is used to transform between the coordinates of two reference frames which differ only by constant relative motion within the constructs of Newtonian physics. These transformations together with spatial rotations and translations in space and time form the inhomogeneous Galilean group (assumed throughout below). Without the translations in space and time the group is the homogeneous Galilean group. The Galilean group is the group of motions of Galilean relativity acting on the four dimensions of space and time, forming the Galilean geometry. This is the passive transformation point of view. The equations below, although apparently obvious, are valid only at speeds much less than the speed of light. In special relativity the Galilean transformations are replaced by Poincaré transformations; conversely, the group contraction in the classical limit c → ∞ of Poincaré transformations yields Galilean transformations.

Galileo formulated these concepts in his description of uniform motion.

The topic was motivated by his description of the motion of a ball rolling down a ramp, by which he measured the numerical value for the acceleration of gravity near the surface of the Earth.

Galilei Donna

Galilei Donna: Storia di tre sorelle a caccia di un mistero (ガリレイドンナ, Garireidonna, lit. Galilei Donna: the story of three sisters in the search of a mystery) is an original anime television series produced by A-1 Pictures and directed by Yasuomi Umetsu. Episode 1 was previewed at a screening in Tokyo on October 5, 2013. Regular broadcasting began on October 10, 2013.

Galilei number

In fluid dynamics, the Galilei number (Ga), sometimes also referred to as Galileo number (see discussion), is a dimensionless number named after Italian scientist Galileo Galilei (1564-1642).

It may be regarded as proportional to gravity forces divided by viscous forces. The Galilei number is used in viscous flow and thermal expansion calculations, for example to describe fluid film flow over walls. These flows apply to condensers or chemical columns.

Galileo's Leaning Tower of Pisa experiment

Between 1589–92, the Italian scientist Galileo Galilei (then professor of mathematics at the University of Pisa) is said to have dropped two spheres of different masses from the Leaning Tower of Pisa to demonstrate that their time of descent was independent of their mass, according to a biography by Galileo's pupil Vincenzo Viviani, composed in 1654 and published in 1717.According to the story, Galileo discovered through this experiment that the objects fell with the same acceleration, proving his prediction true, while at the same time disproving Aristotle's theory of gravity (which states that objects fall at speed proportional to their mass). Most historians consider it to have been a thought experiment rather than a physical test.

Galileo (1968 film)

Galileo (also known as Galileo Galilei) is a 1968 Italian-Bulgarian biographical drama film directed by Liliana Cavani. It depicts the life of Galileo Galilei and particularly his clash with the Catholic Church regarding the interpretation of his astronomical observations with the newly invented telescope.

Galileo Galilei

Galileo Galilei (Italian: [ɡaliˈlɛːo ɡaliˈlɛi]; 15 February 1564 – 8 January 1642) was an Italian astronomer, physicist and engineer, sometimes described as a polymath. Galileo has been called the "father of observational astronomy", the "father of modern physics", the "father of the scientific method", and the "father of modern science".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 pendulums and "hydrostatic balances", inventing the thermoscope and various military compasses, and using the telescope for scientific observations of celestial objects. His contributions to observational astronomy include the telescopic confirmation of the phases of Venus, the observation of the four largest satellites of Jupiter, the observation of Saturn and the analysis of sunspots.

Galileo's championing of heliocentrism and Copernicanism was controversial during his lifetime, when most subscribed to either geocentrism or the Tychonic system. He met with opposition from astronomers, who doubted heliocentrism because of the absence of an observed stellar parallax. The matter was investigated by the Roman Inquisition in 1615, which concluded that heliocentrism was "foolish and absurd in philosophy, and formally heretical since it explicitly contradicts in many places the sense of Holy Scripture." Galileo later defended his views in Dialogue Concerning the Two Chief World Systems (1632), which appeared to attack Pope Urban VIII and thus alienated him and the Jesuits, who had both supported Galileo up until this point. He was tried by the Inquisition, found "vehemently suspect of heresy", and forced to recant. He spent the rest of his life under house arrest. While under house arrest, he wrote Two New Sciences, in which he summarized work he had done some forty years earlier on the two sciences now called kinematics and strength of materials.

Galileo Galilei (opera)

Galileo Galilei is an opera based on excerpts from the life of Galileo Galilei which premiered in 2002 at Chicago's Goodman Theatre, as well as subsequent presentations at the Brooklyn Academy of Music's New Wave Music Festival and London's Barbican Theatre. Music by Philip Glass, libretto and original direction by Mary Zimmerman and Arnold Weinstein. The piece is presented in one act consisting of ten scenes without break.

Galileo Galilei is Glass' 18th opera, and draws from letters of Galileo and his family, and various other documents, to retrospectively journey through Galileo's life. Opening with him as an old, blind man after the trial and Inquisition for his heresy, it explores his religiosity as well as his break with the church, and expands into the greater, oscillating relationship of science to both religion and art. It reaches its end with Galileo — as a young boy — watching an opera composed by his father, Vincenzo Galilei, who was a member of the Florentine Camerata, an association of artists who are credited with creating the art form that came to be known as opera. Ironically, his father's opera is about the motions of the celestial bodies.

The opera has been revived with new productions in 2012 by Madison Opera and Portland Opera. The Portland Opera production was recorded by Orange Mountain Music.

Galileo Galilei planetarium

The Galileo Galilei planetarium, commonly known as Planetario, is located in Parque Tres de Febrero in the Palermo district of Buenos Aires, Argentina.

Italian submarine Galileo Galilei

Galileo Galilei was an Italian Archimede-class submarine built for the Royal Italian Navy (Regia Marina) during the 1930s. She was named after a famous Italian scientist Galileo Galilei.

Liceo Italiano di Istanbul

The Liceo Italiano Statale Istanbul or the Istituti Medi Italiani (I.M.I.), popularly known as Liceo Italiano in Italian and İtalyan Lisesi in Turkish, is under legislation a private school which is situated in Istanbul, Turkey. Although considered a private school under Turkish law, the Liceo Italiano receives financial support and teachers from Italy.

It is owned by the Italian government.

Life of Galileo

Life of Galileo (German: Leben des Galilei), also known as Galileo, is a play by the twentieth-century German dramatist Bertolt Brecht with incidental music by Hanns Eisler. The play was written in 1938 and received its first theatrical production (in German) at the Zurich Schauspielhaus, opening on 9 September 1943. This production was directed by Leonard Steckel, with set-design by Teo Otto. The cast included Steckel himself (as Galileo), Karl Paryla and Wolfgang Langhoff.

The second (or 'American') version was written in English between 1945–1947 in collaboration with Charles Laughton, and opened at the Coronet Theatre in Los Angeles on 30 July 1947. It was directed by Joseph Losey and Brecht, with musical direction by Serge Hovey and set-design by Robert Davison. Laughton played Galileo, with Hugo Haas as Barberini and Frances Heflin as Virginia. This production opened at the Maxine Elliott's Theatre in New York on 7 December of the same year.

In 1955, in the wake of the Manhattan Project, Brecht prepared a third version. A production, by the Berliner Ensemble with Ernst Busch in the title role, opened in January 1957 at the Theater am Schiffbauerdamm and was directed by Erich Engel, with set-design by Caspar Neher. The play was first published in 1940.The action of the play follows the career of the great Italian natural philosopher Galileo Galilei and the Galileo affair, in which he was tried by the Roman Catholic Church for the promulgation of his scientific discoveries. The play embraces such themes as the conflict between dogmatism and scientific evidence, as well as interrogating the values of constancy in the face of oppression.

Michelagnolo Galilei

Michelagnolo Galilei (sometimes spelled Michelangelo; 18 December 1575 – 3 January 1631) was an Italian composer and lutenist of the late Renaissance and early Baroque eras, active mainly in Bavaria and Polish-Lithuanian Commonwealth. He was the son of music theorist and lutenist Vincenzo Galilei, and the younger brother of the scientist Galileo Galilei.

Pisa International Airport

Pisa International Airport (Italian: Aeroporto Internazionale di Pisa) (IATA: PSA, ICAO: LIRP), also named Galileo Galilei Airport is an airport located in Pisa, Italy. It is the main airport in Tuscany and the 10th in Italy in terms of passengers. It is named after Galileo Galilei, the famous scientist and native of Pisa. The airport was first developed for the military in the 1930s and 1940s.

The airport was used by 5,233,118 passengers in 2017. It serves as a focus city of Ryanair.

SS Galileo Galilei

SS Galileo Galilei was an ocean liner built in 1963 by Cantieri Riuniti dell' Adriatico, Monfalcone, Italy for Lloyd Triestino's Italy—Australia service. In 1979, she was converted to a cruise ship, and subsequently sailed under the names Galileo and Meridian. She sank in the Strait of Malacca in 1999 as the Sun Vista.


Saurosuchus (meaning "lizard crocodile" in Greek) is an extinct genus of paracrocodylomorph. With a length of around 7 m (23 ft), Saurosuchus walked on four fully erect limbs. It lived in the Late Triassic of Argentina. It was considered a member of Rauisuchia, although now it is considered part of the more basal Loricata, a clade comprising both Rauisuchia and the true crocodylians.

Shuttlecraft (Star Trek)

Shuttlecraft are fictional vehicles in the Star Trek science fiction franchise built for short trips in space, such as between a planetary surface and orbit. Also referred to as shuttles, their introduction preceded the development of the Space Shuttle.

Before Star Trek, science fiction productions from Forbidden Planet to Rocky Jones, Space Ranger assumed that a long-range starship would land on planets. Gene Roddenberry's original premise stated that the starship Enterprise rarely lands. Given the special effects complexity of landing a giant starship each week, "rarely" was quickly changed to "never". Dated March 1964, the premise mentions a "small shuttle rocket". The shuttle rocket was too expensive to build for the first episodes. For most of the series the transporter served to teleport characters on and off the ship.

In the first year of Star Trek: The Original Series, the need quickly developed for shuttlecraft. Used to carry personnel, cargo and reconnaissance payloads, shuttles filled the same need as boats on a Navy ship. They were also used by starbases. For television writers, they served the dramatic function of putting characters in a small ship that could get lost. Though shuttlecraft were initially expensive to build, they were eventually used in every Star Trek series. Shuttlecraft designs were often shared across different media, for example Danube-Class Runabout featured heavily in Star Trek: Deep Space Nine, was also featured in Star Trek The Next Generation.

The Assayer

The Assayer (Italian: Il Saggiatore) was a book published in Rome by Galileo Galilei in October 1623 and is generally considered to be one of the pioneering works of the scientific method, first broaching the idea that the book of nature is to be read with mathematical tools rather than those of scholastic philosophy, as generally held at the time.

Vincenzo Galilei

Vincenzo Galilei (3 April 1520, c. 1520, or late 1520s – buried 1 or 2 July 1591) was an Italian lutenist, composer, and music theorist, and the father of the famous astronomer and physicist Galileo Galilei and the lute virtuoso and composer Michelagnolo Galilei. He was a seminal figure in the musical life of the late Renaissance and contributed significantly to the musical revolution which demarcates the beginning of the Baroque era.

Vincenzo, in his study of pitch and string tension, produced perhaps the first non-linear mathematical description of a natural phenomenon known to history. It was an extension of a Pythagorean tradition but went beyond it. Many scholars credit him with directing the activity of his son away from pure, abstract mathematics and towards experimentation using mathematical quantitative description of the results, a direction of utmost importance for the history of physics and natural science in general.

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