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153-459: Museo Galileo owns one of the world's major collection of scientific instruments, which bears evidence of the role that the Medici and Lorraine Grand Dukes attached to science and scientists. The Museo di Storia della Scienza has re-opened to the public under the new name Museo Galileo since June 10, 2010, after a two-year closure due to redesigning and renovation work. Its name change celebrates

306-479: A polymath . He was born in the city of Pisa , then part of the Duchy of Florence . Galileo has been called the father of observational astronomy , modern-era classical physics, the scientific method , and 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

459-621: A book on the subject, encouraged by the election of Cardinal Maffeo Barberini as Pope Urban VIII in 1623. Barberini was a friend and admirer of Galileo, and had opposed the admonition of Galileo in 1616. Galileo's resulting book, Dialogue Concerning the Two Chief World Systems , was published in 1632, with formal authorization from the Inquisition and papal permission. Earlier, Pope Urban VIII had personally asked Galileo to give arguments for and against heliocentrism in

612-602: A brief treatise entitled Sidereus Nuncius ( Starry Messenger ). On 30 November 1609, Galileo aimed his telescope at the Moon . While not being the first person to observe the Moon through a telescope (English mathematician Thomas Harriot had done so four months before but only saw a "strange spottednesse"), Galileo was the first to deduce the cause of the uneven waning as light occlusion from lunar mountains and craters . In his study, he also made topographical charts, estimating

765-618: A cost to the state of 1,000 crowns per week. The electress donated much of her fortune to charity: £4,000 a month. On 19 February 1743, she died, and the grand ducal line of the House of Medici died with her. The Florentines grieved her, and she was interred in the crypt that she helped to complete, San Lorenzo. The extinction of the main Medici dynasty and the accession in 1737 of Francis Stephen , Duke of Lorraine and husband of Maria Theresa of Austria , led to Tuscany's temporary inclusion in

918-611: A debate with Galileo, sending him an essay disputing the Copernican system. Galileo later stated that he believed this essay to have been instrumental in the action against Copernicanism that followed. Ingoli may have been commissioned by the Inquisition to write an expert opinion on the controversy, with the essay providing the basis for the Inquisition's actions. The essay focused on eighteen physical and mathematical arguments against heliocentrism. It borrowed primarily from Tycho Brahe's arguments, notably that heliocentrism would require

1071-409: A friend of Galileo, included a realistic depiction of the Moon in one of his paintings; he probably used his own telescope to make the observation. On 7 January 1610, Galileo observed with his telescope what he described at the time as "three fixed stars, totally invisible by their smallness", all close to Jupiter, and lying on a straight line through it. Observations on subsequent nights showed that

1224-487: A genuinely pious Catholic, Galileo fathered three children out of wedlock with Marina Gamba . They had two daughters, Virginia (born 1600) and Livia (born 1601), and a son, Vincenzo (born 1606). Due to their illegitimate birth, Galileo considered the girls unmarriageable, if not posing problems of prohibitively expensive support or dowries, which would have been similar to Galileo's previous extensive financial problems with two of his sisters. Their only worthy alternative

1377-534: A giant armillary sphere designed and built by Antonio Santucci . The nine rooms on the second floor house instruments and experimental apparatus collected by the Lorraine dynasty (18th-19th century), which bear witness of the remarkable contribution of Tuscany and Italy to the progress of electricity , electromagnetism and chemistry . The exhibits include obstetrical wax models from Santa Maria Nuova Hospital , Grand Duke Peter Leopold ’s chemistry cabinet and

1530-482: A high proportion of the major Florentine works of art created during their period of rule. Their support was critical, since artists generally began work on their projects only after they had received commissions. Giovanni di Bicci de' Medici, the first patron of the arts in the family, aided Masaccio and commissioned Filippo Brunelleschi for the reconstruction of the Basilica of San Lorenzo, Florence in 1419. Cosimo

1683-399: A long rivalry themselves, but the pope gave no official sanction to the plan. Despite his refusal of official approval, the pope nonetheless allowed the plot to proceed without interfering, and, after the failed assassination of Lorenzo, also gave dispensation for crimes done in the service of the church. After this, Lorenzo adopted his brother's illegitimate son Giulio de' Medici (1478–1535),

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1836-537: A lutenist and composer who added to Galileo's financial burdens for the rest of his life. Michelangelo was unable to contribute his fair share of their father's promised dowries to their brothers-in-law, who later attempted to seek legal remedies for payments due. Michelangelo also occasionally had to borrow funds from Galileo to support his musical endeavours and excursions. These financial burdens may have contributed to Galileo's early desire to develop inventions that would bring him additional income. When Galileo Galilei

1989-401: A method for measuring the apparent size of a star without a telescope. As described in his Dialogue Concerning the Two Chief World Systems , his method was to hang a thin rope in his line of sight to the star and measure the maximum distance from which it would wholly obscure the star. From his measurements of this distance and of the width of the rope, he could calculate the angle subtended by

2142-568: A pamphlet, An Astronomical Disputation on the Three Comets of the Year 1618 , which discussed the nature of a comet that had appeared late in November of the previous year. Grassi concluded that the comet was a fiery body that had moved along a segment of a great circle at a constant distance from the earth, and since it moved in the sky more slowly than the Moon, it must be farther away than

2295-643: A powerful argument against both the Ptolemaic system and the geoheliocentric system of Tycho Brahe. A dispute over claimed priority in the discovery of sunspots, and in their interpretation, led Galileo to a long and bitter feud with the Jesuit Christoph Scheiner . In the middle was Mark Welser , to whom Scheiner had announced his discovery, and who asked Galileo for his opinion. Both of them were unaware of Johannes Fabricius ' earlier observation and publication of sunspots. Galileo observed

2448-502: A practical use for his discovery. Determining the east–west position of ships at sea required their clocks be synchronized with clocks at the prime meridian . Solving this longitude problem had great importance to safe navigation and large prizes were established by Spain and later Holland for its solution. Since eclipses of the moons he discovered were relatively frequent and their times could be predicted with great accuracy, they could be used to set shipboard clocks and Galileo applied for

2601-523: A thing. Compounding this problem, other astronomers had difficulty confirming Galileo's observations. When he demonstrated the telescope in Bologna, the attendees struggled to see the moons. One of them, Martin Horky, noted that some fixed stars, such as Spica Virginis , appeared double through the telescope. He took this as evidence that the instrument was deceptive when viewing the heavens, casting doubt on

2754-635: A time. From this base, they acquired political power initially in Florence and later in wider Italy and Europe. They were among the earliest businesses to use the general ledger system of accounting through the development of the double-entry bookkeeping system for tracking credits and debits. The Medici family financed the construction of Saint Peter's Basilica and Florence Cathedral , and were patrons of Donatello , Brunelleschi , Botticelli , Leonardo da Vinci , Michelangelo , Raphael , Machiavelli , Galileo , and Francesco Redi , among many others in

2907-470: Is also home to several 18th- to 20th-century archival collections and a photo archive related to the history of the museum's collections, ancient instruments and places of scientific interest. The contemporary collection includes books in Italian and the major European languages and has an annual growth of about 1,800 new acquisitions. All of the library's material can be searched on the online catalogue. Among

3060-482: Is most remembered as the patron of astronomer Galileo Galilei , whose 1610 treatise, Sidereus Nuncius , was dedicated to him. Cosimo died of consumption ( tuberculosis ) in 1621. Cosimo's elder son, Ferdinando, was not yet of legal maturity to succeed him, thus Maria Maddalena and his grandmother, Christina of Lorraine, acted as regents. Their collective regency is known as the Turtici . Maria Maddelana's temperament

3213-797: Is partner with important institutions, such as the Royal Swedish Academy of Sciences , the Nobel Foundation , the Max Planck Society ’s institutes and the Harvard University , and co-sponsors several research projects. It also organizes and takes part in many conferences on scientific museology and the history of science and technology. Museo Galileo has been enhancing and promoting the dissemination of scientific culture for many years. In order to meet this commitment effectively, it promotes exhibitions on

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3366-612: The Albizzi or the Strozzi . One Salvestro de' Medici was speaker of the woolmakers' guild during the Ciompi revolt of 1378–82, and one Antonio de' Medici was exiled from Florence in 1396. Involvement in another plot in 1400 caused all branches of the family to be banned from Florentine politics for twenty years, with the exception of two. Giovanni di Bicci de' Medici (c. 1360–1429), son of Averardo de' Medici (1320–1363), increased

3519-527: The Bardi , Altoviti , Ridolfi, Cavalcanti and the Tornabuoni. This has been suggested as a reason for the rise of the Medici family. Members of the family rose to some prominence in the early 14th century in the wool trade, especially with France and Spain . Despite the presence of some Medici in the city's government institutions , they were still far less notable than other outstanding families such as

3672-805: The Congress of Vienna . Tuscany became a province of the United Kingdom of Italy in 1861. However, several extant branches of the House of Medici survive, including the Princes of Ottajano , the Medici Tornaquinci, and the Verona Medici Counts of Caprara and Gavardo . (see Medici family tree ) The greatest accomplishments of the Medici were in the sponsorship of art and architecture , mainly early and High Renaissance art and architecture. The Medici were responsible for

3825-607: The Dialogue , his final interrogation, in July 1633, concluded with his being threatened with torture if he did not tell the truth, but he maintained his denial despite the threat. The sentence of the Inquisition was delivered on 22 June. It was in three essential parts: According to popular legend, after recanting his theory that the Earth moved around the Sun, Galileo allegedly muttered

3978-533: The Duchy of Florence ) on 15 February 1564, the first of six children of Vincenzo Galilei , a leading lutenist , composer, and music theorist , and Giulia Ammannati , the daughter of a prominent merchant, who had married two years earlier in 1562, when he was 42, and she was 24. Galileo became an accomplished lutenist himself and would have learned early from his father a skepticism for established authority. Three of Galileo's five siblings survived infancy. The youngest, Michelangelo (or Michelagnolo), also became

4131-582: The Dutch Republic gave any credence to it, and the plan ultimately died with Cosimo III in 1723. On 4 April 1718, Great Britain, France and the Dutch Republic (also later, Austria) selected Don Carlos of Spain , the elder child of Elisabeth Farnese and Philip V of Spain , as the Tuscan heir. By 1722, the electress was not even acknowledged as heiress, and Cosimo was reduced to spectator at

4284-636: The Florentine Academy , he presented two lectures, On the Shape, Location, and Size of Dante's Inferno , in an attempt to propose a rigorous cosmological model of Dante's hell . Being inspired by the artistic tradition of the city and the works of the Renaissance artists , Galileo acquired an aesthetic mentality . While a young teacher at the Accademia, he began a lifelong friendship with

4437-600: The Milky Way , previously believed to be nebulous , and found it to be a multitude of stars packed so densely that they appeared from Earth to be clouds. He located many other stars too distant to be visible to the naked eye. He observed the double star Mizar in Ursa Major in 1617. In the Starry Messenger , Galileo reported that stars appeared as mere blazes of light, essentially unaltered in appearance by

4590-567: The Napoleons ) were descended from Francesco. Ferdinando eagerly assumed the government of Tuscany. He commanded the draining of the Tuscan marshlands, built a road network in southern Tuscany and cultivated trade in Livorno . To augment the Tuscan silk industry, he oversaw the planting of mulberry trees along the major roads (silk worms feed on mulberry leaves). In foreign affairs, he shifted Tuscany away from Habsburg hegemony by marrying

4743-523: The Palazzo Medici . Galileo Galilei Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642), commonly referred to as Galileo Galilei ( / ˌ ɡ æ l ɪ ˈ l eɪ oʊ ˌ ɡ æ l ɪ ˈ l eɪ / , US also / ˌ ɡ æ l ɪ ˈ l iː oʊ -/ ; Italian: [ɡaliˈlɛːo ɡaliˈlɛːi] ) or mononymously as Galileo , was a Florentine astronomer , physicist and engineer, sometimes described as

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4896-574: The Roman Inquisition by Father Niccolò Lorini , who claimed that Galileo and his followers were attempting to reinterpret the Bible, which was seen as a violation of the Council of Trent and looked dangerously like Protestantism . Lorini specifically cited Galileo's letter to Castelli. Galileo went to Rome to defend himself and his ideas. At the start of 1616, Francesco Ingoli initiated

5049-563: The Sun would cause its illuminated hemisphere to face the Earth when it was on the opposite side of the Sun and to face away from the Earth when it was on the Earth-side of the Sun. In Ptolemy's geocentric model , it was impossible for any of the planets' orbits to intersect the spherical shell carrying the Sun. Traditionally, the orbit of Venus was placed entirely on the near side of the Sun, where it could exhibit only crescent and new phases. It

5202-524: The Tychonic , Capellan and Extended Capellan models, each either with or without a daily rotating Earth. These all explained the phases of Venus without the 'refutation' of full heliocentrism's prediction of stellar parallax. Galileo's discovery of the phases of Venus was thus his most empirically practically influential contribution to the two-stage transition from full geocentrism to full heliocentrism via geo-heliocentrism. In 1610, Galileo also observed

5355-583: The Vatican , including Martin Luther 's Protestant Reformation and the infamous sack of Rome in 1527 . Leo X's fun-loving pontificate bankrupted Vatican coffers and accrued massive debts. From Leo's election as pope in 1513 to his death in 1521, Florence was overseen, in turn, by Giuliano de' Medici, Duke of Nemours , Lorenzo de' Medici, Duke of Urbino , and Giulio de' Medici, the latter of whom became Pope Clement VII . Clement VII's tumultuous pontificate

5508-479: The thermometer , and, in 1586, published a small book on the design of a hydrostatic balance he had invented (which first brought him to the attention of the scholarly world). Galileo also studied disegno , a term encompassing fine art, and, in 1588, obtained the position of instructor in the Accademia delle Arti del Disegno in Florence, teaching perspective and chiaroscuro . In the same year, upon invitation by

5661-498: The "senior" branch of the family—those descended from Cosimo the Elder—were able to rule until the assassination of Alessandro de' Medici , first Duke of Florence , in 1537. This century-long rule was interrupted only on two occasions (between 1494–1512 and 1527–1530), when anti-Medici factions took control of Florence. Following the assassination of Duke Alessandro, power passed to the "junior" Medici branch—those descended from Lorenzo

5814-657: The 1400s and facilitated the Medicis' rise to political power in Florence , although they officially remained citizens rather than monarchs until the 16th century. In 1532, the family acquired the hereditary title Duke of Florence . In 1569, the duchy was elevated to the Grand Duchy of Tuscany after territorial expansion. The Medici ruled the Grand Duchy from its inception under the builder Cosimo I until 1737, with

5967-531: The 17th century, the population of Florence declined by 50%, and the population of the grand duchy as a whole declined by an estimated 40%. Cosimo desperately tried to reach a settlement with the European powers, but Tuscany's legal status was very complicated: the area of the grand duchy formerly comprising the Republic of Siena was technically a Spanish fief, while the territory of the old Republic of Florence

6120-762: The 400-year anniversary of Galileo's Sidereus Nuncius ( The Starry Messenger ), first published in March of 1610. The museum features the valuable scientific instruments from the Medici Collections which were first displayed in the Stanzino delle Matematiche (Mathematics Room) in the Uffizi Gallery . They were later on moved to the Museo di Fisica e Storia Naturale (Museum of Physics and Natural History) founded by Grand Duke Peter Leopold in 1775. During

6273-548: The Aristotelian belief in the immutability of the heavens. Perhaps based only on descriptions of the first practical telescope which Hans Lippershey tried to patent in the Netherlands in 1608, Galileo, in the following year, made a telescope with about 3x magnification. He later made improved versions with up to about 30x magnification. With a Galilean telescope , the observer could see magnified, upright images on

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6426-476: The Castro mercenaries were paid for, the state could no longer afford to pay interest on government bonds, with the result that the interest rate was lowered by 0.75%. At that time, the economy was so decrepit that barter trade became prevalent in rural market places. Ferdinando died on 23 May 1670 afflicted by apoplexy and dropsy . He was interred in the Basilica of San Lorenzo , the Medici's necropolis. At

6579-598: The Church, the majority of educated people subscribed to the Aristotelian geocentric view that the Earth is the centre of the Universe and the orbit of all heavenly bodies, or Tycho Brahe's new system blending geocentrism with heliocentrism. Opposition to heliocentrism and Galileo's writings on it combined religious and scientific objections. Religious opposition to heliocentrism arose from biblical passages implying

6732-532: The Duchies of Rovere and Montefeltro , passed to her younger son. Cosimo III married Marguerite Louise d'Orléans , a granddaughter of Henry IV of France and Marie de' Medici. An exceedingly discontented pairing, this union produced three children, notably Anna Maria Luisa de' Medici, Electress Palatine , and the last Medicean Grand Duke of Tuscany, Gian Gastone de' Medici . Johann Wilhelm, Elector Palatine , Anna Maria Luisa's spouse, successfully requisitioned

6885-617: The Earth—it was what is commonly known as a terrestrial telescope or a spyglass. He could also use it to observe the sky; for a time he was one of those who could construct telescopes good enough for that purpose. On 25 August 1609, he demonstrated one of his early telescopes, with a magnification of about 8x or 9x, to Venetian lawmakers. His telescopes were also a profitable sideline for Galileo, who sold them to merchants who found them useful both at sea and as items of trade. He published his initial telescopic astronomical observations in March 1610 in

7038-624: The Elder , the youngest son of Giovanni di Bicci, starting with his great-great-grandson Cosimo I "the Great" . Cosimo the Elder and his father started the Medici foundations in banking and manufacturing—including a form of franchises . The family's influence grew with its patronage of wealth, art, and culture. Ultimately, it reached its zenith in the papacy and continued to flourish for centuries afterward as Dukes of Florence and Tuscany. At least half, probably more, of Florence's people were employed by

7191-564: The Elder's notable artistic associates were Donatello and Fra Angelico . In later years the most significant protégé of the Medici family was Michelangelo Buonarroti (1475–1564), who produced work for a number of family members, beginning with Lorenzo the Magnificent, who was said to be extremely fond of the young Michelangelo and invited him to study the family collection of antique sculpture. Lorenzo also served as patron to Leonardo da Vinci (1452–1519) for seven years. Indeed, Lorenzo

7344-656: The Florentine Republic). The Medici additionally benefited from the discovery of vast deposits of alum in Tolfa in 1461. Alum is essential as a mordant in the dyeing of certain cloths and was used extensively in Florence, where the main industry was textile manufacturing. Before the Medici, the Turks were the only exporters of alum, so Europe was forced to buy from them until the discovery in Tolfa. Pius II granted

7497-714: The Florentine painter Cigoli . In 1589, he was appointed to the chair of mathematics in Pisa. In 1591, his father died, and he was entrusted with the care of his younger brother Michelagnolo . In 1592, he moved to the University of Padua where he taught geometry, mechanics , and astronomy until 1610. During this period, Galileo made significant discoveries in both pure fundamental science (for example, kinematics of motion and astronomy) as well as practical applied science (for example, strength of materials and pioneering

7650-524: The Grand Duchy of Tuscany. Cosimo purchased a portion of the island of Elba from the Republic of Genoa and based the Tuscan navy there. He died in 1574, succeeded by his eldest surviving son Francesco , whose death without male heirs led to the succession of his younger brother, Ferdinando , in 1587. Francesco married Johanna of Austria , and with his consort produced Eleonora de' Medici , Duchess of Mantua, and Marie de' Medici , Queen of France and Navarre. Through Marie, all succeeding French monarchs (bar

7803-466: The Grand Duchy, a law later overturned, but resurrected by Maria Maddalena's grandson, Cosimo III . Harold Acton , an Anglo-Italian historian, ascribed the decline of Tuscany to the Turtici regency. Grand Duke Ferdinado was obsessed with new technology, and had a variety of hygrometers, barometers, thermometers, and telescopes installed in the Palazzo Pitti . In 1657, Leopoldo de' Medici ,

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7956-525: The Grand Duke's youngest brother, established the Accademia del Cimento , organized to attract scientists to Florence from all over Tuscany for mutual study. Tuscany participated in the Wars of Castro (the last time Medicean Tuscany proper was involved in a conflict) and inflicted a defeat on the forces of Pope Urban VIII in 1643. The war effort was costly and the treasury so empty because of it that when

8109-676: The Holy Roman Church), Alessandro de' Medici (future duke of Florence), and their guardians. In 1530, after allying himself with Charles V, Pope Clement VII succeeded in securing the engagement of Charles V's daughter Margeret of Austria to his illegitimate nephew (reputedly his son) Alessandro de' Medici . Clement also convinced Charles V to name Alessandro as Duke of Florence. Thus began the reign of Medici monarchs in Florence, which lasted two centuries. After securing Alessandro de' Medici's dukedom, Pope Clement VII married off his first cousin, twice removed, Catherine de' Medici , to

8262-550: The Material and Visual History of Science , and Galilaeana , devoted to research about the figure, work and scientific findings of Galileo Galilei . The Nuncius Library series publishes the results of original research in the history of science and technology as well as editions of sources, while the Galilaeana Library series publishes critical essays, document collections and text editions related to Galileo and to

8415-537: The Medici Collections, dating from the 15th century through the 18th century. The permanent exhibition includes all of Galileo's unique artifacts, among which are his only two extant telescopes and the framed objective lens from the telescope with which he discovered the Galilean moons of Jupiter; thermometers used by members of the Accademia del Cimento ; and an extraordinary collection of terrestrial and celestial globes , including Santucci's Armillary Sphere ,

8568-576: The Medici and their foundational branches in business. The Medici briefly became leaders of Western Christendom through their two famous 16th century popes, Leo X and Clement VII . Both also served as de facto political rulers of Rome, Florence, and large swaths of Italy known as the Papal States . They were generous patrons of the arts who commissioned masterpieces such as Raphael 's Transfiguration and Michelangelo 's The Last Judgment ; however, their reigns coincided with troubles for

8721-508: The Medici family a monopoly on the mining there, making them the primary producers of alum in Europe. Three successive generations of the Medici—Cosimo, Piero, and Lorenzo—ruled over Florence through the greater part of the 15th century. They clearly dominated Florentine representative government without abolishing it altogether. These three members of the Medici family had great skills in

8874-410: The Medici to the Tuscan state, provided that nothing was ever removed from Florence. The "Lorrainers", as the occupying forces were called, were popularly loathed, but the regent, the Prince de Craon, allowed the electress to live unperturbed in the Palazzo Pitti . She occupied herself with financing and overseeing the construction of the Basilica of San Lorenzo , started in 1604 by Ferdinando I , at

9027-450: The Medici, first under Giovanni di Bicci de' Medici , later under his son Cosimo di Giovanni de' Medici and great-grandson, Lorenzo de' Medici . The Medici controlled the Medici Bank—then Europe's largest bank—and an array of other enterprises in Florence and elsewhere. In 1433, the Albizzi managed to have Cosimo exiled. The next year, however, a pro-Medici Signoria (civic government) led by Tommaso Soderini, Oddo Altoviti and Lucca Pitti

9180-475: The Moon. Grassi's arguments and conclusions were criticised in a subsequent article, Discourse on Comets , published under the name of one of Galileo's disciples, a Florentine lawyer named Mario Guiducci , although it had been largely written by Galileo himself. Galileo and Guiducci offered no definitive theory of their own on the nature of comets, although they did present some tentative conjectures that are now known to be mistaken. (The correct approach to

9333-401: The Pope and the Jesuits , who had both strongly 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. During this time, he wrote Two New Sciences (1638), primarily concerning kinematics and the strength of materials . Galileo was born in Pisa (then part of

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9486-535: The Sun or even the orbit of the Earth. It would not be until much later that astronomers realized the apparent magnitudes of stars were caused by an optical phenomenon called the airy disk , and were functions of their brightness rather than true physical size (see Magnitude#History ). Galileo defended heliocentrism based on his astronomical observations of 1609 . In December 1613, the Grand Duchess Christina of Florence confronted one of Galileo's friends and followers, Benedetto Castelli , with biblical objections to

9639-509: The Telescope ; Vinum Nostrum: Art, Science and Myths of Wine in Ancient Mediterranean Cultures ; Archimedes: The Art and Science of Invention , and the most recent (2019-2020) Water as Microscope of Nature: Leonardo da Vinci's Codex Leicester , Leonardo and His Books: The Library of the Universal Genius , Leonardo da Vinci and Perpetual Motion , The Art of Building a Masterpiece: Trajan Column . Museo Galileo publishes historical scientific works and two journals, which are Nuncius: Journal of

9792-413: The Two Chief World Systems the Dialogue on the Ebb and Flow of the Sea . The reference to tides was removed from the title by order of the Inquisition. For Galileo, the tides were caused by the sloshing back and forth of water in the seas as a point on the Earth's surface sped up and slowed down because of the Earth's rotation on its axis and revolution around the Sun. He circulated his first account of

9945-414: The arts and sciences. They funded the invention of the piano , and arguably that of opera , They were also protagonists of the Counter-Reformation , from the beginning of the Reformation through the Council of Trent and the French Wars of Religion . The Medici family came from the agricultural Mugello region north of Florence, and they are first mentioned in a document of 1230. The origin of

10098-408: The beautiful machines made in the workshop of the Museo di Fisica e Storia Naturale to illustrate the fundamental physical laws. Museo Galileo carries out research and documentation in the history of science and technology , as well as in the field of preservation and improvement of museum collections. The library's book collection and a number of online resources are available to scholars. The museum

10251-420: The blood of my brother and of myself, should be ended by any means. My desire is that by my life or my death, my misfortune or my prosperity, I may contribute to the welfare of our city... I go full of hope, praying to God to give me grace to perform what every citizen should at all times be ready to perform for his country. — Lorenzo de' Medici, 1479 The exile of the Medici lasted until 1512, after which

10404-457: The book, and to be careful not to advocate heliocentrism. Whether unknowingly or deliberately, Simplicio, the defender of the Aristotelian geocentric view in Dialogue Concerning the Two Chief World Systems , was often caught in his own errors and sometimes came across as a fool. Indeed, although Galileo states in the preface of his book that the character is named after a famous Aristotelian philosopher ( Simplicius in Latin, "Simplicio" in Italian),

10557-410: 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 two pendulums of equal length and swung one with a large sweep and the other with a small sweep and found that they kept time together. It was not until the work of Christiaan Huygens , almost one hundred years later, that the tautochrone nature of a swinging pendulum

10710-406: The condemned opinions, and initially he denied even defending them. However, he was eventually persuaded to admit that, contrary to his true intention, a reader of his Dialogue could well have obtained the impression that it was intended to be a defence of Copernicanism. In view of Galileo's rather implausible denial that he had ever held Copernican ideas after 1616 or ever intended to defend them in

10863-439: The conferences for Tuscany's future. On 25 October 1723, six days before his death, Grand Duke Cosimo disseminated a final proclamation commanding that Tuscany stay independent: Anna Maria Luisa would succeed uninhibited to Tuscany after Gian Gastone, and the grand duke reserved the right to choose his successor. However, these portions of his proclamation were completely ignored, and he died a few days later. Gian Gastone despised

11016-537: The cultural scenario of the early modern period. To be mentioned also the Archive of Italian Scientists’ Correspondence and the Italian Science Library series. In addition, the museum publishes catalogues relevant to its collections and the temporary exhibitions it promotes. The library—which has been a part of the institute since its foundation—was completely remodelled in 2002, when it was moved to

11169-481: The death of Gian Gastone de' Medici . The Medici produced four popes of the Catholic Church— Pope Leo X (1513–1521), Pope Clement VII (1523–1534), Pope Pius IV (1559–1565) and Pope Leo XI (1605)—and two queens of France— Catherine de' Medici (1547–1559) and Marie de' Medici (1600–1610). The Medici's grand duchy witnessed degrees of economic growth under the early grand dukes, but was bankrupt by

11322-511: The death of Giuliano and an injured Lorenzo. The conspiracy involved the Pazzi and Salviati families, both rival banking families seeking to end the influence of the Medici, as well as the priest presiding over the church services, the Archbishop of Pisa , and even Pope Sixtus IV to a degree. The conspirators approached Sixtus IV in the hopes of gaining his approval, as he and the Medici had

11475-522: The dignity Royal Highness for the Grand Duke and his family in 1691, despite the fact that they had no claim to any kingdom. Cosimo frequently paid the Holy Roman Emperor, his nominal feudal overlord, exorbitant dues, and he sent munitions to the emperor during the Battle of Vienna . The Medici lacked male heirs, and by 1705, the grand ducal treasury was virtually bankrupt. In comparison to

11628-483: The dissemination and documentation of both permanent collections and temporary exhibitions. It also creates digital archives for historical scientific research. 43°46′4″N 11°15′21″E  /  43.76778°N 11.25583°E  / 43.76778; 11.25583 Medici The House of Medici ( English: / ˈ m ɛ d ɪ tʃ i / MED -itch-ee , UK also / m ə ˈ d iː tʃ i / mə- DEE -chee ; Italian: [ˈmɛːditʃi] )

11781-558: The electress for engineering his catastrophic marriage to Anna Maria Franziska of Saxe-Lauenburg ; while she abhorred her brother's liberal policies, he repealed all of his father's anti-Semitic statutes. Gian Gastone revelled in upsetting her. On 25 October 1731, a Spanish detachment occupied Florence on behalf of Don Carlos, who disembarked in Tuscany in December of the same year. The Ruspanti , Gian Gastone's decrepit entourage, loathed

11934-485: The electress, and she them. Duchess Violante of Bavaria , Gian Gastone's sister-in-law, tried to withdraw the grand duke from the sphere of influence of the Ruspanti by organising banquets. His conduct at the banquets was less than regal; he often vomited repeatedly into his napkin, belched, and regaled those present with socially inappropriate jokes. Following a sprained ankle in 1731, he remained confined to his bed for

12087-485: The existence of the moons. Christopher Clavius 's observatory in Rome confirmed the observations and, although unsure how to interpret them, gave Galileo a hero's welcome when he visited the next year. Galileo continued to observe the satellites over the next eighteen months, and by mid-1611, he had obtained remarkably accurate estimates for their periods—a feat which Johannes Kepler had believed impossible. Galileo saw

12240-436: The first non-Habsburg marriage candidate since Alessandro, Christina of Lorraine , a granddaughter of Catherine de' Medici. The Spanish reaction was to construct a citadel on their portion of the island of Elba. To strengthen the new Franco-Tuscan alliance, he married his niece, Marie, to Henry IV of France . Henry explicitly stated that he would defend Tuscany from Spanish aggression, but later reneged, after which Ferdinando

12393-461: The fixed nature of the Earth. Scientific opposition came from Brahe, who argued that if heliocentrism were true, an annual stellar parallax should be observed, though none was at the time. Aristarchus and Copernicus had correctly postulated that parallax was negligible because the stars were so distant. However, Brahe countered that since stars appear to have measurable angular size , if the stars were that distant, they would have to be far larger than

12546-587: The following year he was assassinated by a resentful cousin, Lorenzino de' Medici . The deaths of Alessandro and Ippolito enabled the Medici's "junior" branch to lead Florence. Another outstanding figure of the 16th-century Medici family was Cosimo I, who rose from relatively modest beginnings in the Mugello to attain supremacy over the whole of Tuscany . Against the opposition of Catherine de' Medici , Pope Paul III and their allies, he prevailed in various battles to conquer Florence's hated rival Siena and found

12699-485: The fourth on 13 January. Galileo named the group of four the Medicean stars , in honour of his future patron, Cosimo II de' Medici, Grand Duke of Tuscany , and Cosimo's three brothers. Later astronomers, however, renamed them Galilean satellites in honour of their discoverer. These satellites were independently discovered by Simon Marius on 8 January 1610 and are now called Io , Europa , Ganymede , and Callisto ,

12852-459: The future Pope Clement VII . Lorenzo's son Piero II took over as the head of Florence after Lorenzo's death. The Medici were expelled from Florence from 1494 to 1512 after Piero acceded to all of the demands of invader Charles VIII of France . In the dangerous circumstances in which our city is placed, the time for deliberation is past. Action must be taken... I have decided, with your approval, to sail for Naples immediately, believing that as I am

13005-453: The heights of the mountains. The Moon was not what was long thought to have been a translucent and perfect sphere, as Aristotle claimed, and hardly the first "planet", an "eternal pearl to magnificently ascend into the heavenly empyrian", as put forth by Dante . Galileo is sometimes credited with the discovery of the lunar libration in latitude in 1632, although Thomas Harriot or William Gilbert may have done so before. The painter Cigoli,

13158-503: The history of science and the relationship between science, technology and art. Among the most important exhibitions in Italy and the world: Renaissance Engineers: From Brunelleschi to Leonardo da Vinci ; The Mind of Leonardo: The Universal Genius at Work ; The Medici and Science ; Galileo’s Telescope: The Instrument that Changes the World ; Galileo: Images of the Universe from Antiquity to

13311-648: The late 14th century, the leading family of Florence was the House of Albizzi . In 1293, the Ordinances of Justice were enacted; effectively, they became the constitution of the Republic of Florence throughout the Italian Renaissance. The city's numerous luxurious palazzi were becoming surrounded by townhouses built by the prospering merchant class. The main challengers to the Albizzi family were

13464-530: The legal heir of Galileo and married Sestilia Bocchineri. Although Galileo seriously considered the priesthood as a young man, at his father's urging he instead enrolled in 1580 at the University of Pisa for a medical degree. He was influenced by the lectures of Girolamo Borro and Francesco Buonamici of Florence. In 1581, when he was studying medicine, he noticed a swinging chandelier , which air currents shifted about to swing in larger and smaller arcs. To him, it seemed, by comparison with his heartbeat, that

13617-640: The library's activities are the compiling of bibliographies –notably the International Galilaean Bibliography– and the cataloguing of documents relevant to the history of science, even not in the library's possession. In 2004, a Digital Library was created to preserve and publish digital collections of historical scientific interest. Aware of the growing importance of information and communication technologies , Museo Galileo started its own Multimedia Lab in 1991. The Lab produces offline and online interactive applications related to

13770-490: The management of so "restive and independent a city" as Florence. When Lorenzo died in 1492, however, his son Piero proved quite incapable of responding successfully to challenges caused by the French invasion of Italy in 1492 , and within two years, he and his supporters were forced into exile and replaced with a republican government. Piero de' Medici (1416–1469), Cosimo's son, was only in power for five years (1464–1469). He

13923-495: The motion of the Earth. Prompted by this incident, Galileo wrote a letter to Castelli in which he argued that heliocentrism was actually not contrary to biblical texts and that the Bible was an authority on faith and morals, not science. This letter was not published but circulated widely. Two years later, Galileo wrote a letter to Christina that expanded his arguments previously made in eight pages to forty pages. By 1615, Galileo's writings on heliocentrism had been submitted to

14076-452: The name "Simplicio" in Italian also has the connotation of "simpleton". This portrayal of Simplicio made Dialogue Concerning the Two Chief World Systems appear as an advocacy book: an attack on Aristotelian geocentrism and defence of the Copernican theory. Most historians agree Galileo did not act out of malice and felt blindsided by the reaction to his book. However, the Pope did not take

14229-547: The name is uncertain. Medici is the plural of medico , meaning "medical doctor". The dynasty began with the founding of the Medici Bank in Florence in 1397. For most of the 13th century, the leading banking centre in Italy was Siena . But in 1298, one of the leading banking families of Europe, the Bonsignoris , went bankrupt, and the city of Siena lost its status as the banking centre of Italy to Florence. Until

14382-432: The names given by Marius in his Mundus Iovialis published in 1614. Galileo's observations of the satellites of Jupiter caused controversy in astronomy: a planet with smaller planets orbiting it did not conform to the principles of Aristotelian cosmology , which held that all heavenly bodies should circle the Earth, and many astronomers and philosophers initially refused to believe that Galileo could have discovered such

14535-535: The opinion that the sun stands still at the centre of the world and the Earth moves, and henceforth not to hold, teach, or defend it in any way whatever, either orally or in writing." The decree of the Congregation of the Index banned Copernicus's De Revolutionibus and other heliocentric works until correction. For the next decade, Galileo stayed well away from the controversy. He revived his project of writing

14688-540: The painting, Stillman Drake wrote "there is no doubt now that the famous words were already attributed to Galileo before his death". However, an intensive investigation by astrophysicist Mario Livio has revealed that said painting is most probably a copy of an 1837 painting by the Flemish painter Roman-Eugene Van Maldeghem. After a period with the friendly Ascanio Piccolomini (the Archbishop of Siena ), Galileo

14841-453: The person against whom the activities of our enemies are chiefly directed, I may, perhaps, by delivering myself into their hands, be the means of restoring peace to our fellow-citizens. As I have had more honour and responsibility among you than any private citizen has had in our day, I am more bound than any other person to serve our country, even at the risk of my life. With this intention I now go. Perhaps God wills that this war, which began in

14994-473: The planet Saturn , and at first mistook its rings for planets, thinking it was a three-bodied system. When he observed the planet later, Saturn's rings were directly oriented to Earth, causing him to think that two of the bodies had disappeared. The rings reappeared when he observed the planet in 1616, further confusing him. Galileo observed the planet Neptune in 1612. It appears in his notebooks as one of many unremarkable dim stars. He did not realise that it

15147-420: The population of Florence at the dawn of the 17th century was a mere 75,000, far smaller than the other capitals of Italy (i.e., Rome, Milan, Venice, Palermo, and Naples). Francesco and Ferdinando, due to lax distinction between Medici and Tuscan state property, are thought to have been wealthier than their ancestor, Cosimo de' Medici, the founder of the dynasty. The Grand Duke alone had the prerogative to exploit

15300-421: The positions of these "stars" relative to Jupiter were changing in a way that would have been inexplicable if they had really been fixed stars . On 10 January, Galileo noted that one of them had disappeared, an observation which he attributed to its being hidden behind Jupiter. Within a few days, he concluded that they were orbiting Jupiter: he had discovered three of Jupiter's four largest moons . He discovered

15453-466: The previous decade, Barberini, the future Urban VIII, had come down on the side of Galileo and the Lincean Academy . Galileo's dispute with Grassi permanently alienated many Jesuits, and Galileo and his friends were convinced that they were responsible for bringing about his later condemnation, although supporting evidence for this is not conclusive. At the time of Galileo's conflict with

15606-478: The prizes. Observing the moons from a ship proved too difficult, but the method was used for land surveys, including the remapping of France. From September 1610, Galileo observed that Venus exhibits a full set of phases similar to that of the Moon . The heliocentric model of the Solar System developed by Nicolaus Copernicus predicted that all phases would be visible since the orbit of Venus around

15759-472: 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 . Galileo's championing of Copernican heliocentrism

15912-502: The pseudonym Lothario Sarsio Sigensano, purporting to be one of his own pupils. The Assayer was Galileo's devastating reply to the Astronomical Balance . It has been widely recognized as a masterpiece of polemical literature, in which "Sarsi's" arguments are subjected to withering scorn. It was greeted with wide acclaim, and particularly pleased the new pope, Urban VIII , to whom it had been dedicated. In Rome, in

16065-488: The rebellious phrase " And yet it moves ". There was a claim that a 1640s painting by the Spanish painter Bartolomé Esteban Murillo or an artist of his school, in which the words were hidden until restoration work in 1911, depicts an imprisoned Galileo apparently gazing at the words "E pur si muove" written on the wall of his dungeon. The earliest known written account of the legend dates to a century after his death. Based on

16218-716: The reign of the Lorraine Grand Dukes, new instruments were added to the scientific collections. In 1929, the First Italian Exhibition of the History of Science in Florence highlighted the importance of scientific collections within Italy's cultural heritage. As a consequence, in 1930 the University of Florence gave birth to the Istituto di Storia della Scienza con annesso Museo (Institute of the History of Science and attached Museum). The institute

16371-550: The rest of his life. The bed, often smelling of faeces , was occasionally cleaned by Violante. In 1736, following the War of the Polish Succession , Don Carlos was disbarred from Tuscany, and Francis III of Lorraine was made heir in his stead. In January 1737, the Spanish troops withdrew from Tuscany, and were replaced by Austrians. Gian Gastone died on 9 July 1737, surrounded by prelates and his sister. Anna Maria Luisa

16524-415: The result of several secondary causes including the shape of the sea, its depth, and other factors. Albert Einstein later expressed the opinion that Galileo developed his "fascinating arguments" and accepted them uncritically out of a desire for physical proof of the motion of the Earth. Galileo also dismissed the idea, known from antiquity and by his contemporary Johannes Kepler, that the Moon caused

16677-443: The sense of Holy Scripture". The Inquisition found that the idea of the Earth's movement "receives the same judgement in philosophy and ... in regard to theological truth, it is at least erroneous in faith". Pope Paul V instructed Cardinal Bellarmine to deliver this finding to Galileo, and to order him to abandon heliocentrism. On 26 February, Galileo was called to Bellarmine's residence and ordered "to abandon completely ...

16830-502: The smaller sizes were not small enough to answer Tycho's argument. Cardinal Bellarmine had written in 1615 that the Copernican system could not be defended without "a true physical demonstration that the sun does not circle the earth but the earth circles the sun". Galileo considered his theory of the tides to provide such evidence. This theory was so important to him that he originally intended to call his Dialogue Concerning

16983-575: The son of Emperor Charles V's arch-enemy, King Francis I of France —the future King Henry II . This led to the transfer of Medici blood, through Catherine's daughters, to the royal family of Spain through Elisabeth of Valois , and the House of Lorraine through Claude of Valois . In 1534, following a lengthy illness, Pope Clement VII died—and with him the stability of the Medici's "senior" branch. In 1535, Ippolito Cardinal de' Medici died under mysterious circumstances. In 1536, Alessandro de' Medici married Charles V's daughter, Margaret of Austria; however,

17136-705: The stake in the Piazza della Signoria, the same location as his bonfire. In addition to commissions for art and architecture, the Medici were prolific collectors and today their acquisitions form the core of the Uffizi museum in Florence. In architecture, the Medici were responsible for some notable features of Florence, including the Uffizi Gallery , the Boboli Gardens , the Belvedere , the Medici Chapel and

17289-436: The star at his viewing point. In his Dialogue , he reported that he had found the apparent diameter of a star of first magnitude to be no more than 5 arcseconds , and that of one of sixth magnitude to be about / 6 arcseconds. Like most astronomers of his day, Galileo did not recognise that the apparent sizes of stars that he measured were spurious, caused by diffraction and atmospheric distortion, and did not represent

17442-422: The stars as they appeared to be much larger than the Sun. The essay also included four theological arguments, but Ingoli suggested Galileo focus on the physical and mathematical arguments, and he did not mention Galileo's biblical ideas. In February 1616, an Inquisitorial commission declared heliocentrism to be "foolish and absurd in philosophy, and formally heretical since it explicitly contradicts in many places

17595-461: The state's mineral and salt resources, and the fortunes of the Medici were directly tied to the Tuscan economy. Ferdinando, although no longer a cardinal, exercised much influence at successive conclaves. In 1605, Ferdinando succeeded in getting his candidate, Alessandro de' Medici, elected Pope Leo XI . He died the same month, but his successor, Pope Paul V , was also pro-Medici. Ferdinando's pro-papal foreign policy, however, had drawbacks. Tuscany

17748-588: The study of comets had been proposed at the time by Tycho Brahe.) In its opening passage, Galileo and Guiducci's Discourse gratuitously insulted the Jesuit Christoph Scheiner , and various uncomplimentary remarks about the professors of the Collegio Romano were scattered throughout the work. The Jesuits were offended, and Grassi soon replied with a polemical tract of his own, The Astronomical and Philosophical Balance , under

17901-640: The surname "Galilei") derives from the Latin "Galilaeus", meaning "of Galilee ". The biblical roots of Galileo's name and surname were to become the subject of a famous pun. In 1614, during the Galileo affair , one of Galileo's opponents, the Dominican priest Tommaso Caccini , delivered against Galileo a controversial and influential sermon . In it he made a point of quoting Acts 1:11 : "Ye men of Galilee, why stand ye gazing up into heaven?". Despite being

18054-560: The suspected public ridicule lightly, nor the Copernican advocacy. Galileo had alienated one of his biggest and most powerful supporters, the Pope, and was called to Rome to defend his writings in September 1632. He finally arrived in February 1633 and was brought before inquisitor Vincenzo Maculani to be charged . Throughout his trial, Galileo steadfastly maintained that since 1616 he had faithfully kept his promise not to hold any of

18207-573: The telescope). His multiple interests included the study of astrology , which at the time was a discipline tied to the studies of mathematics, astronomy and medicine. Tycho Brahe and others had observed the supernova of 1572 . Ottavio Brenzoni's letter of 15 January 1605 to Galileo brought the 1572 supernova and the less bright nova of 1601 to Galileo's notice. Galileo observed and discussed Kepler's Supernova in 1604. Since these new stars displayed no detectable diurnal parallax , Galileo concluded that they were distant stars, and, therefore, disproved

18360-440: The telescope, and contrasted them to planets, which the telescope revealed to be discs. But shortly thereafter, in his Letters on Sunspots , he reported that the telescope revealed the shapes of both stars and planets to be "quite round". From that point forward, he continued to report that telescopes showed the roundness of stars, and that stars seen through the telescope measured a few seconds of arc in diameter. He also devised

18513-481: The territories of the Austrian crown. The line of the Princes of Ottajano , an extant branch of the House of Medici who were eligible to inherit the grand duchy of Tuscany when the last male of the senior branch died in 1737, could have carried on as Medici sovereigns but for the intervention of Europe's major powers, which allocated the sovereignty of Florence elsewhere. As a consequence, the grand duchy expired and

18666-544: The territory became a secundogeniture of the Habsburg-Lorraine dynasty. The first grand duke of the new dynasty, Francis I, was a great-great-great-grandson of Francesco I de' Medici, thus he continued the Medicean Dynasty on the throne of Tuscany through the female line. The Habsburgs were deposed in favor of the House of Bourbon-Parma in 1801 (themselves deposed in 1807), but were later restored at

18819-508: The third floor of Palazzo Castellani. The new architectural set-up was awarded the “Bibliocom Biblioteche in vetrina” prize. The library houses about 150,000 works concerning the history of science. The antique book collection consists of nearly 5,000 works. It includes the Medici-Lorraine Collection, made of scientific books mostly about physics and mathematics, gathered by Tuscan dynasties over five centuries. The library

18972-693: The tides in 1616, addressed to Cardinal Orsini . His theory gave the first insight into the importance of the shapes of ocean basins in the size and timing of tides; he correctly accounted, for instance, for the negligible tides halfway along the Adriatic Sea compared to those at the ends. As a general account of the cause of tides, however, his theory was a failure. If this theory were correct, there would be only one high tide per day. Galileo and his contemporaries were aware of this inadequacy because there are two daily high tides at Venice instead of one, about 12 hours apart. Galileo dismissed this anomaly as

19125-528: The tides—Galileo also took no interest in Kepler's elliptical orbits of the planets . Galileo continued to argue in favour of his theory of tides, considering it the ultimate proof of Earth's motion. In 1619, Galileo became embroiled in a controversy with Father Orazio Grassi , professor of mathematics at the Jesuit Collegio Romano . It began as a dispute over the nature of comets, but by

19278-514: The time Galileo had published The Assayer ( Il Saggiatore ) in 1623, his last salvo in the dispute, it had become a much wider controversy over the very nature of science itself. The title page of the book describes Galileo as a philosopher and "Matematico Primario" of the Grand Duke of Tuscany. Because The Assayer contains such a wealth of Galileo's ideas on how science should be practised, it has been referred to as his scientific manifesto. Early in 1619, Father Grassi had anonymously published

19431-493: The time of Cosimo III de' Medici (r. 1670–1723). The Medicis' wealth and influence was initially derived from the textile trade guided by the wool guild of Florence, the Arte della Lana . Like other families ruling in Italian signorie , the Medici dominated their city's government, were able to bring Florence under their family's power, and created an environment in which art and humanism flourished. The Italian Renaissance

19584-451: The time of his death, the population of the grand duchy was 730,594; the streets were lined with grass and the buildings on the verge of collapse in Pisa . Ferdinando's marriage to Vittoria della Rovere produced two children: Cosimo III de' Medici, Grand Duke of Tuscany, and Francesco Maria de' Medici, Duke of Rovere and Montefeltro . Upon Vittoria's death in 1694, her allodial possessions,

19737-428: The time, surnames were optional in Italy, and his first name had the same origin as his sometimes-family name, Galilei. Both his given and family name ultimately derived from an ancestor, Galileo Bonaiuti , an important physician, professor, and politician in Florence in the 15th century. Galileo Bonaiuti was buried in the same church, the Basilica of Santa Croce in Florence , where about 200 years later, Galileo Galilei

19890-520: The true sizes of stars. However, Galileo's values were much smaller than previous estimates of the apparent sizes of the brightest stars, such as those made by Brahe, and enabled Galileo to counter anti-Copernican arguments such as those made by Tycho that these stars would have to be absurdly large for their annual parallaxes to be undetectable. Other astronomers such as Simon Marius, Giovanni Battista Riccioli , and Martinus Hortensius made similar measurements of stars, and Marius and Riccioli concluded

20043-407: The unquestioned leaders. The Medici family was connected to most other elite families of the time through marriages of convenience , partnerships, or employment, so the family had a central position in the social network : several families had systematic access to the rest of the elite families only through the Medici, perhaps similar to banking relationships. Some examples of these families include

20196-497: The wealth of the family through his creation of the Medici Bank, and became one of the richest men in the city of Florence. Although he never held any political office, he gained strong popular support for the family through his support for the introduction of a proportional system of taxation . Giovanni's son Cosimo the Elder , Pater Patriae (father of the country), took over in 1434 as gran maestro (the unofficial head of

20349-419: Was a planet, but he did note its motion relative to the stars before losing track of it. Galileo made naked-eye and telescopic studies of sunspots . Their existence raised another difficulty with the unchanging perfection of the heavens as posited in orthodox Aristotelian celestial physics. An apparent annual variation in their trajectories, observed by Francesco Sizzi and others in 1612–1613, also provided

20502-482: Was also buried. When he did refer to himself with more than one name, it was sometimes as Galileo Galilei Linceo, a reference to his being a member of the Accademia dei Lincei , an elite science organization founded in the Papal States . It was common for mid-16th century Tuscan families to name the eldest son after the parents' surname. Hence, Galileo Galilei was not necessarily named after his ancestor Galileo Bonaiuti. The Italian male given name "Galileo" (and thence

20655-416: Was also possible to place it entirely on the far side of the Sun, where it could exhibit only gibbous and full phases. After Galileo's telescopic observations of the crescent, gibbous and full phases of Venus, the Ptolemaic model became untenable. In the early 17th century, as a result of his discovery, the great majority of astronomers converted to one of the various geo-heliocentric planetary models, such as

20808-406: Was an Italian banking family and political dynasty that first consolidated power in the Republic of Florence under Cosimo de' Medici and his grandson Lorenzo "the Magnificent" during the first half of the 15th century. The family originated in the Mugello region of Tuscany , and prospered gradually in trade until it was able to fund the Medici Bank . This bank was the largest in Europe in

20961-626: Was an artist in his own right and an author of poetry and song; his support of the arts and letters is seen as a high point in Medici patronage. After Lorenzo's death the puritanical Dominican friar Girolamo Savonarola rose to prominence, warning Florentines against excessive luxury. Under Savonarola's fanatical leadership many great works were "voluntarily" destroyed in the Bonfire of the Vanities (February 7, 1497). The following year, on 23 May 1498, Savonarola and two young supporters were burned at

21114-550: Was analogous to Christina's, and together they aligned Tuscany with the papacy , re-doubled the Tuscan clergy, and allowed the heresy trial of Galileo Galilei to occur. Upon the death of the last Duke of Urbino (Francesco Maria II), instead of claiming the duchy for Ferdinando, who was married to the Duke of Urbino's granddaughter and heiress, Vittoria della Rovere , they permitted it to be annexed by Pope Urban VIII . In 1626, they banned any Tuscan subject from being educated outside

21267-499: Was called "Piero the Gouty" because of the gout that pained his foot and led to his death. Unlike his father, Piero had little interest in the arts. Due to his illness, he mostly stayed at home bedridden, and therefore did little to further the Medici control of Florence while in power. As such, Medici rule stagnated until the next generation, when Piero's son Lorenzo took over. Lorenzo de' Medici (1449–1492), called "the Magnificent",

21420-551: Was dominated by a rapid succession of political crises—many long in the making—that resulted in the sack of Rome by the armies of Holy Roman Emperor Charles V in 1527 and rise of the Salviati, Altoviti and Strozzi as the leading bankers of the Roman Curia . From the time of Clement's election as pope in 1523 until the sack of Rome, Florence was governed by the young Ippolito de' Medici (future cardinal and vice-chancellor of

21573-485: Was eight, his family moved to Florence , but he was left under the care of Muzio Tedaldi for two years. When Galileo was ten, he left Pisa to join his family in Florence, where he came under the tutelage of Jacopo Borghini. He was educated, particularly in logic, from 1575 to 1578 in the Vallombrosa Abbey , about 30 km southeast of Florence. Galileo tended to refer to himself only by his first name. At

21726-514: Was elected and Cosimo returned. The Medici became the city's leading family, a position they would hold for the next three centuries. Florence remained a republic until 1537, traditionally marking the end of the High Renaissance in Florence, but the instruments of republican government were firmly under the control of the Medici and their allies, save during intervals after 1494 and 1527. Cosimo and Lorenzo rarely held official posts but were

21879-481: Was forced to marry his heir, Cosimo, to Maria Maddalena of Austria to assuage Spain (where Maria Maddalena's sister Margaret was the incumbent Queen consort). Ferdinando also sponsored a Tuscan expedition to the New World with the intention of establishing a Tuscan colony, an enterprise that brought no result for permanent colonial acquisitions. Despite all of these incentives for economic growth and prosperity,

22032-585: Was housed in Palazzo Castellani and was entrusted with the instrument collections of the Medici and Lorraine dynasties. The permanent exhibition is arranged by chronological and thematic paths. 1930-1961 Andrea Corsini 1961-1981 Maria Luisa Righini Bonelli 1982-2021 Paolo Galluzzi since 2021 Roberto Ferrari (Executive Director) from July until December 2021 Marco Ciardi (Scientific Director) since December 2021 Filippo Camerota (Scientific Director) The first floor's nine rooms are devoted to

22185-835: Was inspired by the Medici along with other families of Italy, such as the Visconti and Sforza in Milan , the Este in Ferrara , the Borgia and Della Rovere in Rome , and the Gonzaga in Mantua . The Medici Bank, from when it was created in 1397 to its fall in 1494, was one of the most prosperous and respected institutions in Europe, and the Medici family was considered the wealthiest in Europe for

22338-542: Was met with opposition from within the Catholic Church and from some astronomers. The matter was investigated by the Roman Inquisition in 1615, which concluded that his opinions contradicted accepted Biblical interpretations. 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

22491-418: Was more capable of leading and ruling a city, but he neglected the family banking business, which led to its ultimate ruin. To ensure the continuance of his family's success, Lorenzo planned his children's future careers for them. He groomed the headstrong Piero II to follow as his successor in civil leadership; Giovanni (future Pope Leo X ) was placed in the church at an early age; and his daughter Maddalena

22644-524: Was offered a nominal regency by the Prince de Craon until the new grand duke could peregrinate to Tuscany, but declined. Upon her brother's death, she received all the House of Medici's allodial possessions. Anna Maria Luisa signed the Patto di Famiglia ("family pact") on 31 October 1737. In collaboration with the Holy Roman Emperor and Grand Duke Francis of Lorraine, she willed all the personal property of

22797-665: Was overrun with religious orders, not all of whom were obliged to pay taxes. Ferdinando died in 1609, leaving an affluent realm; his inaction in international affairs, however, would have long-reaching consequences down the line. In France, Marie de' Medici was acting as regent for her son, Louis XIII . Louis repudiated her pro-Habsburg policy in 1617. She lived the rest of her life deprived of any political influence. Ferdinando's successor, Cosimo II , reigned for less than 12 years. He married Maria Maddalena of Austria, with whom he had his eight children, including Margherita de' Medici , Ferdinando II de' Medici , and an Anna de' Medici . He

22950-515: Was provided with a sumptuous dowry to make a politically advantageous marriage to a son of Pope Innocent VIII that cemented the alliance between the Medici and the Roman branches of the Cybo and Altoviti families. The Pazzi conspiracy of 1478 was an attempt to depose the Medici family by killing Lorenzo with his younger brother Giuliano during Easter services; the assassination attempt ended with

23103-465: Was the religious life. Both girls were accepted by the convent of San Matteo in Arcetri and remained there for the rest of their lives. Virginia took the name Maria Celeste upon entering the convent. She died on 2 April 1634, and is buried with Galileo at the Basilica of Santa Croce, Florence . Livia took the name Sister Arcangela and was ill for most of her life. Vincenzo was later legitimised as

23256-489: Was thought to be under imperial suzerainty . Upon the death of his first son, Cosimo contemplated restoring the Florentine republic, either upon Anna Maria Luisa's death, or on his own, if he predeceased her. The restoration of the republic would entail resigning Siena to the Holy Roman Empire, but, regardless, it was vehemently endorsed by his government. Europe largely ignored Cosimo's plan. Only Great Britain and

23409-399: Was used to create an accurate timepiece. Up to this point, Galileo had deliberately been kept away from mathematics, since a physician earned a higher income than a mathematician. However, after accidentally attending a lecture on geometry, he talked his reluctant father into letting him study mathematics and natural philosophy instead of medicine. He created a thermoscope , a forerunner of

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