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101-736: During the Dutch Golden Age scholars from around Europe were attracted to the Dutch Republic for its climate of intellectual tolerance. Individuals such as René Descartes , Rembrandt , Christiaan Huygens , Hugo Grotius , Benedictus Spinoza , and later Baron d'Holbach were active in Leiden and environs. The university has seven academic faculties and over fifty subject departments, housing more than forty national and international research institutes. Its historical primary campus consists of several buildings spread over Leiden, while

202-479: A cryogenic refrigerant (which is used in cryocoolers ), and liquid helium is produced commercially for use in superconducting magnets such as those used in magnetic resonance imaging (MRI), nuclear magnetic resonance (NMR), magnetoencephalography (MEG), and experiments in physics , such as low temperature Mössbauer spectroscopy . The Large Hadron Collider contains superconducting magnets that are cooled with 120 tonnes of liquid helium. A helium-3 atom

303-412: A house with an ornamented façade that befitted their new status. In the countryside, many new castles and stately homes were built; but most of them have not survived. Early in the 17th century late Gothic elements still prevailed, combined with Renaissance motifs. After a few decades French classicism gained prominence: vertical elements were stressed, less ornamentation was used, and natural stone

404-494: A joint summer program on global and transnational law from its Hague campus. The university has no central campus; its buildings are spread over the city. Some buildings, like the Gravensteen, are very old, while Van Steenis, Lipsius and Gorlaeus are much more modern. Among the institutions affiliated with the university are The KITLV or Royal Netherlands Institute of Southeast Asian and Caribbean Studies (founded in 1851),

505-476: A major victory at the Synod of Dort (1618–19). The variety of sects may well have worked to make religious intolerance impractical. Renaissance Humanism , of which Desiderius Erasmus (c. 1466–1536) was an important advocate, had also gained a firm foothold and was partially responsible for a climate of tolerance. Tolerance towards Catholics was not so easy to uphold, as religion had played an important part in

606-404: A means to greater economic power and prestige. Universities became career pathways to public office. Rich merchants and aristocrats sent their sons on a so-called Grand Tour through Europe. Often accompanied by a private tutor, preferably a scientist himself, these young people visited universities in several European countries. This intermixing of patricians and aristocrats was most prominent in

707-492: A meeting-place for the well-to-do, who were proud to play a prominent part and paid well to see this preserved for posterity by means of a group portrait. The latter were associations at a city level that fostered literary activities, like poetry, drama and discussions, often through contests. Cities took pride in their associations and promoted them. In the Dutch Golden Age, the meals of the middle class consisted of

808-689: A position previously occupied by the Portuguese and Spanish . The maps used by Fernando Álvarez de Toledo, 3rd Duke of Alba to attack Dutch cities were made by Dutch mapmakers. In 1602, the Dutch East India Company (VOC) was founded. It was one of the first-ever multinational corporations , financed by shares that established the Amsterdam Stock Exchange . The company received a Dutch monopoly on Asian trade, which it would keep for two centuries, and it became

909-617: A predominantly Catholic background, such as Utrecht and Gouda , did not enjoy the benefits of the Golden Age. As for the Protestant towns, unity of belief was also far from standard. At the beginning of the century bitter controversies between strict Calvinists and more permissive Protestants , known as Remonstrants , split the country. The Remonstrants denied predestination and championed freedom of conscience, while their more dogmatic adversaries (known as Contra-Remonstrants) gained

1010-611: A pressure of one atmosphere (101.3 kilopascals ) is about 125 g/L (0.125 g/ml), or about one-eighth the density of liquid water . Helium was first liquefied on July 10, 1908, by the Dutch physicist Heike Kamerlingh Onnes at the University of Leiden in the Netherlands . At that time, helium-3 was unknown because the mass spectrometer had not yet been invented. In more recent decades, liquid helium has been used as

1111-656: A relatively secluded life. Unlike other European artistic traditions, Dutch art rarely depicts elderly women as disgusting or grotesque creatures, but rather they are idolized as figures of piety and purity whom the younger generations of women can look up to. Calvinism was the state religion in the Dutch Republic, though this does not mean that unity existed. Although the Netherlands was a tolerant nation compared to neighboring states, wealth and social status belonged almost exclusively to Protestants. The cities with

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1212-439: A renaissance during this period as well. However, by the end of the 17th century, conflicts with neighbouring powers as well as declining economic influence led to the end of this period. The process by which the Dutch Republic became one of the foremost maritime and economic powers of the world during the era has been referred to as the "Dutch Miracle" by historian K. W. Swart . The term "Dutch Golden Age" has been controversial in

1313-423: A rich variety of dishes. During the 15th century haute cuisine began to emerge, largely limited to the aristocracy, but from the 17th century onward dishes of this kind became available to the wealthy citizens as well. The Dutch Empire enabled spices, sugar, and exotic fruits to be imported to the country. By the late 17th century, tea and coffee consumption were increasing and becoming part of everyday life. Tea

1414-789: A second campus located in The Hague houses a liberal arts college ( Leiden University College The Hague ) and several of its faculties. It is a member of the Coimbra Group , the Europaeum , and a founding member of the League of European Research Universities . The university has produced twenty-six Spinoza Prize Laureates and sixteen Nobel Laureates . Members of the Dutch royal family such as Queen Juliana , Queen Beatrix , and King Willem-Alexander are alumni, and ten prime ministers of

1515-564: A sexual encounter would result in the transmission of syphilis or other venereal diseases. Dutch women were also allowed to take communion alongside men, and widows were able to inherit property and maintain control over their finances and husband's wills. However, a woman's sphere of authority still primarily lay in household duties, though historical evidence exists showing certain cases of wives maintaining considerable control in family businesses. Manuals written by men instructing women and wives in various aspects of domestic duties proliferated,

1616-808: A short time, the Republic seemed very successful in Brazil . The Dutch had succeeded in taking the coast between the mouth of the Amazon and the São Francisco (a river south of Recife ) from the Portuguese. Under governor John Maurice, Prince of Nassau-Siegen (1637-1644), the lucrative sugar trade was largely in Dutch hands. Curaçao was conquered in 1634. By 1648, Aruba and Bonaire were also in Dutch hands. A promising colony in North America

1717-681: A siege, and the division between the Northern and Southern Netherlands (the latter mostly modern Belgium ) was established. The United Provinces (roughly today's Netherlands ) fought on until the Twelve Years' Truce , which did not end the hostilities. The Peace of Westphalia in 1648, which ended the Eighty Years' War between the Dutch Republic and Spain, and the Thirty Years' War between other European superpowers, brought

1818-481: A strategic alliance with Delft University of Technology and Erasmus University Rotterdam for the universities to increase the quality of their research and teaching. The university is also the unofficial home of the Bilderberg Group , a meeting of high-level political and economic figures from North America and Europe. Leiden University partnered with Duke University School of Law starting in 2017 to run

1919-679: A token of gratitude for Leiden's fierce resistance against Spain during the Eighty Years' War) became a gathering place for intellectuals. Jan Amos Comenius , the Czech educator and writer, was known for his theories of education , but also as a pioneer of Czech Protestantism during the 17th century. To escape the Counter-Reformation , he migrated to the Dutch Republic and is buried in Naarden , North Holland . Comenius accepted

2020-562: A wet nurse would prevent a bond from forming between mother and child. The Dutch believed that a mother's milk came from the blood originally in her womb and that feeding the infant such substances would also reap physiological and health related benefits. Seventeenth-century Dutch society dictated that children should first begin to learn religion at home. Therefore, along with their husbands, women used family meal times to discuss religious topics and to focus on prayer. Seventeenth-century Dutch culture maintained contradictory attitudes regarding

2121-412: Is a fermion and at very low temperatures, they form two-atom Cooper pairs which are bosonic and condense into a superfluid . These Cooper pairs are substantially larger than the interatomic separation. The temperature required to produce liquid helium is low because of the weakness of the attractions between the helium atoms. These interatomic forces in helium are weak to begin with because helium

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2222-474: Is a noble gas , but the interatomic attractions are reduced even more by the effects of quantum mechanics . These are significant in helium because of its low atomic mass of about four atomic mass units . The zero point energy of liquid helium is less if its atoms are less confined by their neighbors. Hence in liquid helium, its ground state energy can decrease by a naturally occurring increase in its average interatomic distance. However at greater distances,

2323-623: Is the most advanced graduate degree and is awarded by select university departments (mostly in the fields of Arts, Social Sciences, Archeology, Philosophy, and Theology). Admission to these programmes is highly selective and primarily aimed at those students opting for an academic career or before going into law or medicine. Traditionally, the MPhil degree enabled its holder to teach at the university levels as an associate professor. In addition, most departments, affiliated (research) institutes, or faculties offer doctorate programmes or positions, leading to

2424-595: The Bay of Biscay and the Baltic . Seville and Lisbon and the Baltic ports were too far apart for direct trade between the two terminal points, enabling the Dutch to provide profitable intermediation, carrying salt, wine, cloth and later silver, spices, and colonial products eastward while bringing Baltic grains, fish, and naval stores to the west. The Dutch share of European shipping tonnage was enormous, well over half during most of

2525-588: The Dutch East India Company (VOC) for trade with Japan through its trading post on Dejima , an island in the bay of Nagasaki . From here the Dutch traded between China and Japan and paid tribute to the shōgun . Until 1854, the Dutch were Japan's sole window to the Western world. The collection of scientific learning introduced from Europe became known in Japan as Rangaku or Dutch Learning. The Dutch were instrumental in transmitting to Japan some knowledge of

2626-666: The Eighty Years War , the two countries were diametrically opposed when the Republic captured a large colonial empire . This led to the Anglo-Dutch Wars . The prosperity gained from this was accompanied by horrors against the local population. For example, in 1621, Jan Pieterszoon Coen had almost all the inhabitants of the Banda Islands massacred, see Dutch conquest of the Banda Islands . For

2727-512: The New World . Economists Ronald Findlay and Kevin H. O'Rourke attribute part of the Dutch ascendancy to its Protestant work ethic based on Calvinism , which promoted thrift and education. This contributed to "the lowest interest rates and the highest literacy rates in Europe. The abundance of capital made it possible to maintain an impressive stock of wealth , embodied not only in

2828-602: The Rhine river. Dutch traders shipped wine from France and Portugal to the Baltic lands and returned with grain for countries around the Mediterranean Sea . By the 1680s, an average of nearly 1000 Dutch ships entered the Baltic Sea each year, to trade with markets of the fading Hanseatic League . The Dutch were able to gain control of much of the trade with the nascent English colonies in North America; and after

2929-469: The School of Delft , the Leiden fijnschilders , and Dutch classicism . Dutch architecture was taken to a new height in the Golden Age. Cities expanded greatly as the economy thrived. New town halls, weighhouses and storehouses were built. Merchants who had made their fortune ordered a new house along one of the many new canals that were dug out in and around many cities (for defense and transport purposes),

3030-718: The Zeeman effect was discovered at the institution by Pieter Zeeman and shortly afterward explained by Hendrik Antoon Lorentz . In the world's first university low-temperature laboratory, Professor Heike Kamerlingh Onnes achieved a temperature only one degree above absolute zero . In 1908, he was also the first to succeed in liquifying helium and has played a role in the discovery of superconductivity in metals. The University Library has more than 5.2 million books and fifty thousand journals. It also has collections of Western and Oriental manuscripts , printed books, archives, prints, drawings, photographs, maps, and atlases . It houses

3131-465: The chemical element helium exists in a liquid form only at the extremely low temperature of −269 °C (−452.20 °F; 4.15 K). Its boiling point and critical point depend on which isotope of helium is present: the common isotope helium-4 or the rare isotope helium-3 . These are the only two stable isotopes of helium. See the table below for the values of these physical quantities. The density of liquid helium-4 at its boiling point and

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3232-418: The 1640s, over five hundred students were enrolled from all across Europe, making it the largest Protestant university. Baruch Spinoza discovered Descartes's work partly at Leiden University, which he visited for periods of study multiple times. In the 18th century, Jacobus Gronovius , Herman Boerhaave , Tiberius Hemsterhuis , and David Ruhnken were among the renowned academics of the university. In 1896,

3333-404: The 17th-century Dutch household revolved around the home and domestic tasks. In Dutch culture , the home was regarded as a safe-haven from the lack of Christian virtue and immorality of the outside world. Additionally, the home represented a microcosm of the Dutch Republic, in that the smooth running of an ideal household reflected the relative stability and prosperity of the government. The home

3434-495: The 1920s and 1930s. Martinus Beijerinck , one of the founders of virology, finished his Ph.D. at Leiden in 1877. Kamerlingh Onnes was awarded the Nobel Prize for Physics in 1913. Three other professors received the Nobel Prize for their research performed at Universiteit Leiden: Hendrik Antoon Lorentz and Pieter Zeeman received the Nobel Prize for their pioneering work in the field of optical and electronic phenomena, and

3535-596: The 21st century due to the extensive Dutch involvement in slavery and colonialism during the period, and it has been deprecated by several museums in the Netherlands , including the Amsterdam Museum . In 1568, the Seven Provinces that later signed the Union of Utrecht ( Dutch : Unie van Utrecht ) started a rebellion against Philip II of Spain that led to the Eighty Years' War . Before

3636-591: The Canadian physicist John Cunningham McLennan , who was the first to produce quantities of liquid helium almost on demand. In 1932 Einstein reported that the liquid helium could help in creating an atomic bomb. Important early work on the characteristics of liquid helium was done by the Soviet physicist Lev Landau , later extended by the American physicist Richard Feynman . In 1961, Vignos and Fairbank reported

3737-668: The Convent of Saint Barbara, then moved to the Faliede Bagijn Church in 1577 (now the location of the university museum) and in 1581 to a former convent of Cistercian nuns , a site which it still occupies, though the original building was destroyed by a fire in 1616. Leiden University's reputation was created in part by the presence of scholars such as Justus Lipsius , Joseph Scaliger , Franciscus Gomarus , Hugo Grotius , Jacobus Arminius , Daniel Heinsius , and Gerhard Johann Vossius within fifty years of its founding. By

3838-564: The Dutch Republic formal recognition and independence from the Spanish crown. Protestants were especially well-represented among the skilled craftsmen and rich merchants of the port cities of Bruges, Ghent, and Antwerp. Under the terms of the surrender of Antwerp in 1585, the Protestant population (if unwilling to reconvert) were given four years to settle their affairs before leaving the city and Habsburg territory. Similar arrangements were made in other places. More Protestants moved to

3939-589: The Dutch Republic, where he became a professor of history and philosophy at the Illustrious School of Rotterdam. He lived in Rotterdam until his death in 1706. As Bertrand Russell noted in his A History of Western Philosophy (1945), "He [Descartes] lived in Holland for twenty years (1629–49), except for a few brief visits to France and one to England, all on business. It is impossible to exaggerate

4040-403: The Dutch were arguably the most economically wealthy and scientifically advanced of all European nations, which put them in a privileged position to transfer Western knowledge to Japan. The Dutch also dominated trade between European countries. The Low Countries were favorably positioned at a crossing of east–west and north–south trade routes and connected to a large German hinterland through

4141-460: The Eighty Years' War of independence against Spain (with political and economic freedom being other important motives). Intolerant inclinations, however, could be overcome by money. Thus Catholics could buy the privilege of holding ceremonies in a conventicle (a house doubling inconspicuously as a church), but public offices were out of the question. Catholics tended to keep to themselves in their own section of each town, even though they were one of

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4242-644: The Leiden Observatory 1633; the Natural History Museum, with a very complete anatomical cabinet; the Rijksmuseum van Oudheden (National Museum of Antiquities), with especially valuable Egyptian and Indian departments; a museum of Dutch antiquities from the earliest times; and three ethnographical museums, of which the nucleus was Philipp Franz von Siebold 's Japanese collections. The anatomical and pathological laboratories of

4343-552: The Low Countries could be completely reconquered, a war between England and Spain , the Anglo-Spanish War of 1585-1604 , broke out. English intervention forced Spanish troops to halt their advances and left them in control of the important trading cities of Bruges and Ghent , but without control of Antwerp , which was then arguably the most important port in the world. Antwerp fell on 17 August 1585, after

4444-622: The Netherlands including Mark Rutte . US President John Quincy Adams also studied at the university. In 1575, the emerging Dutch Republic did not have universities in its northern heartland. The only other university in the Habsburg Netherlands was the University of Leuven located in an area under firm Spanish control. Prince William founded Leiden University to give the Northern Netherlands an institution that could educate its citizens in religion and provide

4545-593: The Ph.D. degree. Most of the Ph.D. programmes offered by the university are concentrated in several research schools or institutes. Leiden University has more than 50 research and graduate schools and institutes. Some of them are fully affiliated with one faculty of the university, while others are interfaculty institutes or interuniversity institutes. Of the 107 Spinoza Prize laureates (the highest scientific award of The Netherlands), twenty-six were granted to professors of Leiden University. Literary historian Frits van Oostrom

4646-552: The Republic would not face the dire repercussions of a bad harvest and the starvation it accompanied, instead profiting when this happened in other states (bad harvests were commonplace in France and England in the 17th century, which also contributed to the Republic's success in that time). According to Ronald Findlay and Kevin H. O'Rourke, geography favored the Dutch Republic, contributing to its wealth. They write, "The foundations were laid by taking advantage of location, midway between

4747-462: The cities. The invention of the wind powered sawmill enabled the construction of a massive fleet of ships for worldwide trading and for military defense of the republic's economic interests. In the 17th century the Dutch – traditionally able seafarers and keen mapmakers – began to trade with the Far East , and as the century wore on, they gained an increasingly dominant position in world trade,

4848-467: The colonization of the Americas would have looked very different. Asian slaves were also traded extensively. The slave was indispensable in the economy of the Dutch colonial empire in the Golden Age as a labor force; in the second half of the seventeenth century, half of the inhabitants of Batavia were unfree. Amsterdam's dominant position as a trade center was strengthened in 1640 with a monopoly for

4949-490: The effects of the interatomic forces in helium are even weaker. Because of the very weak interatomic forces in helium, the element remains a liquid at atmospheric pressure all the way from its liquefaction point down to absolute zero . At temperatures below their liquefaction points, both helium-4 and helium-3 undergo transitions to superfluids . (See the table below.) Liquid helium can be solidified only under very low temperatures and high pressures . Liquid helium-4 and

5050-508: The elderly, in particular, elderly women. Some Dutch writers idealized old age as a poetic transition from life to death. Others regarded aging as an illness in which one is gradually deteriorating until they reach their final destination, while some lauded the elderly as wise and people who deserve the highest forms of respect. However, treatises on behaviour for elderly women and widows stressed not necessarily their inherent wisdom, but that they should maintain piety, practice moderation, and live

5151-475: The end of the war with Spain in 1648, Dutch trade with that country also flourished. National industries expanded as well. Shipyards and sugar refineries are prime examples. As more and more land was utilized, partially through transforming lakes into polders such as the Beemster , Schermer and Purmer , local grain production and dairy farming soared. In the Netherlands in the 17th century, social status

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5252-517: The following Leiden professors: health psychologist Andrea Evers, immunology technologist Ton Schumacher and psychologist Judi Mesman. Among other leading professors are Wim Blockmans , professor of Medieval History, and Willem Adelaar , professor of Amerindian Languages . Other notable Leiden researchers were the Arabist and Islam expert Christiaan Snouck Hurgronje , the law expert Cornelis van Vollenhoven and historian Johan Huizinga , all during

5353-419: The government with educated men in all fields. It is said the choice fell on Leiden as a reward for the heroic defence of Leiden against Spanish attacks in 1574. The name of Philip II of Spain , William's adversary, appears on the official foundation certificate as he was still the de jure count of Holland . Philip II forbade all his subjects to study in Leiden. The new institution was initially located in

5454-471: The great number of " scenes of everyday life " or genre paintings, and other secular subjects. Landscapes and seascapes, for example, reflect the land reclaimed from the sea and the sources of trade and naval power that mark the Republic's Golden Age. One subject that is quite characteristic of Dutch Baroque painting is the large group portrait, especially of civic and militia guilds , such as Rembrandt van Rijn 's Night Watch . A special genre of still life

5555-444: The immigration of many French Huguenots , many of whom were shopkeepers or scientists. However, some figures, such as the philosopher Baruch Spinoza (1632–1677), experienced social stigma. Due to its climate of intellectual tolerance, the Dutch Republic attracted scientists and other thinkers from all over Europe. In particular, the renowned University of Leiden (established in 1575 by the Dutch stadtholder Willem van Oranje as

5656-576: The importance of Holland in the 17th century, as the one country where there was freedom of speculation. Hobbes had to have his books printed there; Locke took refuge there during the five worst years of reaction in England before 1688; Bayle (of the Dictionary ) found it necessary to live there; and Spinoza would hardly have been allowed to do his work in any other country." Dutch lawyers were famous for their knowledge of international law of

5757-405: The industrial and scientific revolution then occurring in Europe. The Japanese purchased and translated numerous scientific books from the Dutch, obtained from them Western curiosities and manufactures (such as clocks) and received demonstrations of various Western innovations (such as electric phenomena, and the flight of a hot air balloon in the early 19th century). In the 17th and 18th centuries,

5858-516: The invitation of Laurens de Geer to visit Amsterdam, where he lived the last 14 years of his life (1656–1670). He published his most important works there: 43 volumes in all, about half of his total output. French philosopher and mathematician René Descartes (1596-1650) lived in Holland from 1628 until 1649. He also had his most important works published in Amsterdam and Leiden. Another French-born philosopher, Pierre Bayle , left France in 1681 for

5959-410: The large fleet but in the plentiful stocks of an array of commodities that were used to stabilize prices and take advantage of profit opportunities." Several other factors also contributed to the flowering of trade, industry, the arts and the sciences in the Netherlands during this time. A necessary condition was a supply of cheap energy from windmills and from peat , easily transported by canal to

6060-593: The largely Calvinistic population. The major force behind new developments was the citizenry, notably in the western provinces: first and foremost in Holland, to a lesser extent Zeeland and Utrecht . Where rich aristocrats often became patrons of art in other countries, because of their comparative absence in the Netherlands this role was played by wealthy merchants and other patricians. Centres of cultural activity were town militia (Dutch: schutterij ) and chambers of rhetoric ( rederijkerskamer ). The former were created for town defence and policing, but also served as

6161-459: The largest commercial enterprise of the 17th-century world. Spices were imported in bulk and brought huge profits due to the efforts and risks involved and to demand. This is remembered to this day in the Dutch word peperduur , (as expensive as pepper) meaning something is very expensive, reflecting the prices of spices at the time. To finance the growing trade within the region, the Bank of Amsterdam

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6262-534: The largest single denominations: for example, the Catholic painter Johannes Vermeer lived in the "Papist corner" of the town of Delft . The same applied to Anabaptists and Jews . Overall, the country was tolerant enough to attract religious refugees from other countries, notably Jewish merchants from Portugal who brought much wealth with them. The revocation of the Edict of Nantes in France in 1685 resulted in

6363-410: The most popular being Jacob Cats' Houwelyck . As evidenced by numerous 17th-century Dutch genre paintings, the most important domestic tasks performed by women included supervising maids, cooking, cleaning, needlework, and spinning. As seen in art and literature at the time, unmarried young women were valued for maintaining their modesty and diligence as this time in a woman's life was regarded to be

6464-481: The most precarious. From a young age, burgher women were taught various household-related duties by their mothers, including reading, so as to prepare them for their lives as housewives. Dutch art at this time shows the idealized situation in which an unmarried young girl ought to conduct herself in situations such as courtship, which commonly included themes relating to gardens or nature, music lessons or parties, needlework, and receiving love letters. However, ideals of

6565-618: The new 'Wijnhaven' building on Turfmarkt in 2016. The Faculty of Governance and Global Affairs was established in 2011, together with the University College, and one of the largest programmes of the Faculty of Humanities, International Studies. Since 2017 Leiden University Medical Center also has a branch at Campus The Hague. The university is divided into seven major faculties which offer approximately 50 undergraduate degree programmes and over 100 graduate programmes. Most of

6666-725: The north between 1585 and 1630 than Catholics moved in the other direction, although there were also many of these. Many of those moving north settled in Amsterdam , transforming what was a small harbor into one of the most important ports and commercial centres in the world by 1630. In addition to the mass migration of Protestant natives from the southern Netherlands to the northern Netherlands, there were also influxes of non-native refugees who had previously fled from religious persecution, particularly Sephardi Jews from Portugal and Spain , and later Protestants from France . The Pilgrim Fathers also spent time there before their voyage to

6767-492: The period of their ascendancy." Outside of Europe, the Republic also prospered. The Dutch East India Company (VOC) and the Dutch West India Company (WIC) not only obtained a monopoly on the spice trade , their ships also controlled the world's seas. This was very much against the wishes of England, which was envious of the economic success of the Republic. Although they had both fought the Spanish during

6868-669: The physiologist Willem Einthoven for his invention of the string galvanometer, which among other things, enabled the development of electrocardiography. Nobel laureates associated with Leiden include the physicists Albert Einstein , Enrico Fermi , and Paul Ehrenfest . Other Leiden-affiliated Nobel laureates include Jacobus Henricus van 't Hoff , Johannes Diderik van der Waals , Tobias Asser , Albert Szent-Györgyi , Igor Tamm , Jan Tinbergen , Nikolaas Tinbergen , Tjalling Koopmans , Nicolaas Bloembergen , and Niels Jerne . Dutch Golden Age The Dutch Golden Age ( Dutch : Gouden Eeuw [ˈɣʌudən ˈeːu, ˈɣʌudə ˈʔeːu] )

6969-407: The prevailing public opinion concerning marriage. He and other cultural authorities were influenced by Calvinist ideals that stressed an equality between husband and wife, considered companionship a primary reason for marriage, and regarded procreation as a mere consequence of that companionship. However, non-egalitarian ideas still existed regarding women as the weaker sex, and the image of the turtle

7070-524: The rare collection of historical trees hundreds of years old, the Japanese Siebold Memorial Museum symbolising the historical link between East and West, the tropical greenhouses with their world-class plant collections, and the central square and Conservatory exhibiting exotic plants from South Africa and southern Europe. In 1998, the university has expanded to The Hague which has become home to Campus The Hague , with six of

7171-433: The rare helium-3 are not completely miscible . Below 0.9 kelvin at their saturated vapor pressure , a mixture of the two isotopes undergoes a phase separation into a normal fluid (mostly helium-3) that floats on a denser superfluid consisting mostly of helium-4. This phase separation happens because the overall mass of liquid helium can reduce its thermodynamic enthalpy by separating. At extremely low temperatures,

7272-444: The sea and commercial law . Hugo Grotius (1583–1645) played a leading part in the foundation of international law . He invented the concept of the "Free seas" or Mare liberum , which was fiercely contested by England, the Netherlands' main rival for domination of world trade. He also formulated laws on conflicts between nations in his book De lure Belli ac pacis ("On the law of war and peace"). Christiaan Huygens (1629–1695)

7373-463: The sea. Leeghwater added a considerable amount of land to the republic by converting several large lakes into polders , pumping the water out with windmills. Cultural development in the Low Countries stood out from neighboring countries. With some exceptions (notably Dutch playwright Joost van den Vondel ) the Baroque movement did not gain much influence. Its exuberance did not fit the austerity of

7474-637: The second half lasting until the outbreak of the Franco-Dutch War . During the period, Dutch colonialists, many of them affiliated with the East India Company and West India Company , established trading posts and colonies in the Americas , Southern Africa and Asia , protected by the powerful Dutch States Navy . The Dutch also dominated the triangular trade and Atlantic slave trade during this period. Dutch culture experienced

7575-421: The second half of the century. After aristocrats and patricians came the affluent middle class, consisting of Protestant ministers, lawyers, physicians, small merchants, industrialists and clerks of large state institutions. Lower status was attributed to farmers, craft and tradesmen, shopkeepers, and government bureaucrats. Below that stood skilled laborers, maids, servants, sailors, and other persons employed in

7676-455: The service industry. At the bottom of the pyramid were "paupers": impoverished peasants, many of whom tried their luck in a city as a beggar or day laborer. Workers and laborers were generally paid better than in most of Europe, and enjoyed relatively high living standards, although they also paid higher than normal taxes. Farmers prospered from mainly cash crops needed to support the urban and seafaring population. The central role of women in

7777-453: The seven faculties represented and exclusive home to the Faculty of Governance and Global Affairs, International Studies and Leiden University College The Hague , a liberal arts and sciences college. Here, the university offers academic courses in the fields of law, political science, public administration and medicine. It occupied a number of buildings in the centre of the city, including a college building at Lange Voorhout , before moving into

7878-426: The superfluid phase, rich in helium-4, can contain up to 6% helium-3 in solution. This makes the small-scale use of the dilution refrigerator possible, which is capable of reaching temperatures of a few millikelvins . Superfluid helium-4 has substantially different properties from ordinary liquid helium. In 1908, Kamerlingh-Onnes succeeded in liquifying a small quantity of helium. In 1923, he provided advice to

7979-404: The tendencies that dominated Baroque art in other parts of Europe, such as Caravaggism and naturalism , but was the leader in developing the subjects of still life , landscape , and genre painting . Portraiture was also popular, but history painting – traditionally the most-elevated genre – struggled to find buyers. Church art was virtually non-existent, and little sculpture of any kind

8080-427: The university are modern, and the museums of geology and mineralogy have been restored. The Hortus Botanicus (botanical garden) is the oldest botanical garden in the Netherlands and one of the oldest in the world. Plants from all over the world have been carefully cultivated here by experts for more than four centuries. The Clusius garden (a reconstruction), the 18th-century Orangery with its monumental tub plants,

8181-533: The university's departments offer their degree programme(s). Undergraduate programmes lead to either a B.A., B.Sc., or LL.B. degree. Other degrees, such as the B.Eng. or B.F.A. , are not awarded at Leiden University. Students can choose from a range of graduate programmes. Most of the above-mentioned undergraduate programmes can be continued with either a general or a specialised graduate program. Leiden University offers more than 100 graduate programs leading to either MA , MSc , MPhil , or LLM degrees . The MPhil

8282-467: The wife in the domestic and private), women in 17th-century Dutch society still enjoyed a wide range of freedoms within their own sphere of control. Unmarried young women were known to enjoy various freedoms with their lovers and suitors, while married women enjoyed the right to publicly shame their husbands who patronized brothels. Moreover, married women could legally reject the sexual desires of their husbands if there were proof or reason to believe that

8383-616: The world's largest collections on Indonesia and the Caribbean , collected by the Scaliger Institute which studies various aspects of knowledge transmissions and ideas through texts and images from antiquity to the present day. In 2005, the manuscript of Einstein on the quantum theory of the monatomic ideal gas (the Einstein-Bose condensation ) was discovered in one of Leiden's libraries. In 2012 Leiden entered into

8484-439: The young women espoused by genre painting and Petrarchian poetry did not reflect the reality. Accounts from travellers described the various freedoms young women were provided in the realm of courtship. The prevalence of Calvinist sermons regarding the consequences of leaving young women unsupervised also spoke to a general trend of a lack of parental oversight in the matters of young love. Dutch writers, such as Jacob Cats , held

8585-543: Was New Amsterdam (in present-day New York City). The role that the Netherlands was able to play in the transatlantic slave trade was the result of a series of conquests against the Portuguese. Trade routes of African slaves in the seventeenth century ran largely through Elmina in Ghana to Brazil and the Caribbean Islands . Elmina was conquered in 1637, Axim in 1642. In 1641, led by Cornelis Jol , Angola

8686-430: Was a famous astronomer , physicist and mathematician . He invented the pendulum clock , which was a major step forward towards exact timekeeping. Among his contributions to astronomy was his explanation of Saturn's planetary rings . He also contributed to the field of optics . The most famous Dutch scientist in the area of optics is Antonie van Leeuwenhoek , who was the first to methodically study microscopic life—he

8787-472: Was a period in the history of the Netherlands which roughly lasted from 1588, when the Dutch Republic was established, to 1672, when the Rampjaar occurred. During this period, Dutch trade , scientific developments , art and overseas colonisation was among the most prominent in Europe. The first half of the period spanned from the beginning of the Eighty Years' War until its conclusion in 1648, with

8888-446: Was also conquered. It is estimated that more than 550,000 people were brought to America in slavery by Dutch ships. Conditions during these voyages were miserable, and it was commonplace for large numbers of enslaved people to die before they reached their destination. In addition to the personal hardships of enslaved people, the trade also massively disrupted African societies. Estimates of the direct profitability vary, but without slavery

8989-402: Was an integral part of public life in Dutch society. Public passers-by could clearly view the entrance halls of Dutch homes decorated to show off a particular family's wealth and social standing. The home was also a place for neighbors, friends, and extended family to interact, further cementing its importance in the social lives of 17th-century Dutch burghers. The physical space of the Dutch home

9090-422: Was commonly used to express the separate spheres and strengths of both genders. In addition to supervising maids, cooking, cleaning, and prating needlework, women were also encouraged to maintain some financial control over domestic affairs, such as going to market and buying their own food. Maternity and motherhood were highly valued in Dutch culture. Mothers were encouraged to breastfeed their children, as using

9191-471: Was constructed along gender lines. In the front of the house, the men had control over a small space where they could do their work or conduct business, known as the Voorhuis, while women controlled most every other space in the house, such as the kitchens and private family rooms. Although there was a clear separation in spheres of power between husband and wife (the husband had authority in the public realm,

9292-615: Was divided, although exercising social control in many areas to an even greater extent than under the Catholic Church. That is not to say that aristocrats were without social status. On the contrary, wealthy merchants bought themselves into the nobility by becoming landowners and acquiring a coat of arms and a seal. Aristocrats also mixed with other classes for financial reasons: they married their daughters to wealthy merchants, became traders themselves or took up public or military office. Merchants also started to value public office as

9393-786: Was established in 1609, the precursor to, if not the first true central bank . Although the trade with the Far East was the more famous of the VOC's exploits, the main source of wealth for the Republic was, in fact, its trade with the Baltic states and Poland (then the Polish–Lithuanian Commonwealth ). Called the "Mothertrade" ( Dutch : Moedernegotie ), the Dutch imported enormous amounts of bulk resources like grain and wood, stockpiling them in Amsterdam so Holland would never lack for basic goods, as well as being able to sell them on for profit. This meant that, unlike their main rivals,

9494-415: Was largely determined by income. The landed nobility had relatively little importance, since they mostly lived in the more underdeveloped inland provinces, and it was the urban merchant class that dominated Dutch society. The clergy did not have much worldly influence either: the Catholic Church had been more or less suppressed since the onset of the Eighty Years' War with Spain. The new Protestant movement

9595-470: Was preferred above bricks. In the last decades of the century this trend towards sobriety intensified. From around 1670 the most prominent feature of a house front was its entrance, with pillars on each side and possibly a balcony above it, but no further decoration. Liquid helium Liquid helium is a physical state of helium at very low temperatures at standard atmospheric pressures . Liquid helium may show superfluidity . At standard pressure,

9696-466: Was produced. While art collecting and painting for the open market was also common elsewhere, art historians point to the growing number of wealthy Dutch middle-class and successful mercantile patrons as driving forces in the popularity of certain pictorial subjects. This trend, along with the lack of Counter-Reformation church patronage that dominated the arts in Catholic Europe, resulted in

9797-445: Was served with sweets, candy or marzipan and cookies. A rich Dutch mealtime of the time contained many extravagant dishes and drinks. The elite wore black clothes as a status symbol. This status originated from the difficulty of the dyeing process and the cost of elaborate embellishments, and is contrary to the popular belief that it was done exclusively out of Puritan self-restraint. Dutch Golden Age painting followed many of

9898-466: Was soon adopted by artists from the Dutch Republic . Today, the best-known painters of the Dutch Golden Age are the period's most dominant figure Rembrandt , the Delft master of genre Johannes Vermeer , the innovative landscape painter Jacob van Ruisdael , and Frans Hals , who infused new life into portraiture. Some notable artistic styles and trends include Haarlem Mannerism , Utrecht Caravaggism ,

9999-415: Was the first person to describe bacteria—thus laying the foundations for the field of microbiology . The "microscopes" were simple magnifiers, not compound microscopes. His skill in grinding lenses (some as small as 1mm in diameter) resulted in a magnification as high as 245x. Famous Dutch hydraulic engineer Jan Leeghwater (1575–1650) gained important victories in the Netherlands' eternal battle against

10100-1315: Was the first professor of Leiden to be granted the Spinoza award for his work on developing the NLCM centre (Dutch literature and culture in the Middle Ages) into a top research centre. Other Spinoza Prize winners are linguists Frederik Kortlandt and Pieter Muysken, mathematician Hendrik Lenstra , physicists Carlo Beenakker , Jan Zaanen , Dirk Bouwmeester and Michel Orrit, astronomers Ewine van Dishoeck , Marijn Franx and Alexander Tielens , transplantation biologist Els Goulmy , clinical epidemiologist Frits Rosendaal, pedagogue Marinus van IJzendoorn , archeologists Wil Roebroeks and Corinne Hofman , neurologist Michel Ferrari , classicist Ineke Sluiter , social psychologist Naomi Ellemers , statistician Aad van der Vaart , cognitive psychologist Eveline Crone , organisation psychologist Carsten de Dreu , chemical immunologist Sjaak Neefjes , parasitologist Maria Yazdanbakhsh, electrochemist Mark Koper and astrophysicist Ignas Snellen. The Stevin Prize laureates who have achieved exceptional success in knowledge exchange and impact for society include

10201-518: Was the so-called pronkstilleven (Dutch for 'ostentatious still life'). This style of ornate still-life painting was developed in the 1640s in Antwerp by Flemish artists such as Frans Snyders , Osias Beert , Adriaen van Utrecht and a whole generation of Dutch Golden Age painters. They painted still lifes that emphasized abundance by depicting a diversity of objects, fruits, flowers and dead game, often together with living people and animals. The style

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