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Droste Effect
The Droste effect (), known in art as an example of '' mise en abyme'', is the effect of a picture recursively appearing within itself, in a place where a similar picture would realistically be expected to appear. This produces a loop which in theory could go on forever, but in practice only continues as far as the image's resolution allows. The effect is named after a Dutch brand of cocoa, with an image designed by Jan Musset in 1904. It has since been used in the packaging of a variety of products. The effect is seen in the Dutch artist M. C. Escher's 1956 lithograph '' Print Gallery'', which portrays a gallery that depicts itself. Apart from advertising, the Droste effect is displayed in the model village at Bourton-on-the-Water: this contains a model of itself, with two further iterations. The effect has been a motif, too, for the cover of many comic books, where it was especially popular in the 1940s. Effect Origins The ''Droste'' effect is named after the imag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Droste Cacao - Pastilles Blikje Van 250 Gram, Foto 1
Droste B.V. () is a Dutch chocolate manufacturer. Its headquarters and factory are located in the village of Vaassen, Netherlands. Droste operates as an independent business unit within Hosta, a German confectionery company. History Droste was founded by Gerardus Johannes Droste in 1863 in the city of Haarlem. The company started as a confectionery business selling various types of candy, including the Droste chocolate pastilles that are still being sold today. Because of the growing reputation, the firm ''G.J. Droste'' opened its first factory in 1890. The entire chocolate making process took place in the same building as where the retail store was located. In 1891, the factory was relocated to the Spaarne river due to lack of room in the old building. This new location was favourable because the raw materials could now be delivered by boat. Likewise, the shipping of finished products was done on water, improving the distribution process. In 1897, the leadership of the Droste fac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fractal Geometry
In mathematics, a fractal is a geometric shape containing detailed structure at arbitrarily small scales, usually having a fractal dimension strictly exceeding the topological dimension. Many fractals appear similar at various scales, as illustrated in successive magnifications of the Mandelbrot set. This exhibition of similar patterns at increasingly smaller scales is called self-similarity, also known as expanding symmetry or unfolding symmetry; if this replication is exactly the same at every scale, as in the Menger sponge, the shape is called affine self-similar. Fractal geometry lies within the mathematical branch of measure theory. One way that fractals are different from finite geometric figures is how they scale. Doubling the edge lengths of a filled polygon multiplies its area by four, which is two (the ratio of the new to the old side length) raised to the power of two (the conventional dimension of the filled polygon). Likewise, if the radius of a filled spher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native Americans In The United States
Native Americans, also known as American Indians, First Americans, Indigenous Americans, and other terms, are the Indigenous peoples of the mainland United States ( Indigenous peoples of Hawaii, Alaska and territories of the United States are generally known by other terms). There are 574 federally recognized tribes living within the US, about half of which are associated with Indian reservations. As defined by the United States Census, "Native Americans" are Indigenous tribes that are originally from the contiguous United States, along with Alaska Natives. Indigenous peoples of the United States who are not listed as American Indian or Alaska Native include Native Hawaiians, Samoan Americans, and the Chamorro people. The US Census groups these peoples as " Native Hawaiian and other Pacific Islanders". European colonization of the Americas, which began in 1492, resulted in a precipitous decline in Native American population because of new diseases, wars, ethni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Land O'Lakes
Land O'Lakes, Inc. is an American member-owned agricultural cooperative based in the Minneapolis-St. Paul suburb of Arden Hills, Minnesota, United States, focusing on the dairy industry. The cooperative has 1,959 direct producer-members, 751 member-cooperatives, and about 9,000 employees who process and distribute products for about 300,000 agricultural producers, handling 12 billion pounds of milk annually. It is ranked third on the National Cooperative Bank Co-op 100 list of mutuals and cooperatives. The co-op is one of the largest producers of butter and cheese in the United States through its dairy foods business; serves producers, animal owners and their families through more than 4,700 local cooperatives, independent dealers and other large retailers through its Purina Animal Nutrition (Purina Mills) business; and delivers seed, crop protection products, agricultural services and agronomic insights to 1,300 locally owned and operated cooperative and independent agri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leiden University
Leiden University (abbreviated as ''LEI''; nl, Universiteit Leiden) is a public research university in Leiden, Netherlands. The university was founded as a Protestant university in 1575 by William, Prince of Orange, as a reward to the city of Leiden for its defence against Spanish attacks during the Eighty Years' War. As the oldest institution of higher education in the Netherlands, it enjoys a reputation across Europe and the world. Known for its historic foundations and emphasis on the social sciences, the university came into particular prominence during the Dutch Golden Age, when scholars from around Europe were attracted to the Dutch Republic due to its climate of intellectual tolerance and Leiden's international reputation. During this time, Leiden became the home to individuals such as René Descartes, Rembrandt, Christiaan Huygens, Hugo Grotius, Baruch Spinoza and Baron d'Holbach. The university has seven academic faculties and over fifty subject departments wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notices Of The American Mathematical Society
''Notices of the American Mathematical Society'' is the membership journal of the American Mathematical Society (AMS), published monthly except for the combined June/July issue. The first volume appeared in 1953. Each issue of the magazine since January 1995 is available in its entirety on the journal web site. Articles are peer-reviewed by an editorial board of mathematical experts. Since 2019, the editor-in-chief is Erica Flapan. The cover regularly features mathematical visualization Mathematical phenomena can be understood and explored via visualization. Classically this consisted of two-dimensional drawings or building three-dimensional models (particularly plaster models in the 19th and early 20th century), while today it ...s. The ''Notices'' is self-described to be the world's most widely read mathematical journal. As the membership journal of the American Mathematical Society, the ''Notices'' is sent to the approximately 30,000 AMS members worldwide, one-third of whom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hendrik Lenstra
Hendrik Willem Lenstra Jr. (born 16 April 1949, Zaandam) is a Dutch mathematician. Biography Lenstra received his doctorate from the University of Amsterdam in 1977 and became a professor there in 1978. In 1987 he was appointed to the faculty of the University of California, Berkeley; starting in 1998, he divided his time between Berkeley and the University of Leiden, until 2003, when he retired from Berkeley to take a full-time position at Leiden. Three of his brothers, Arjen Lenstra, Andries Lenstra, and Jan Karel Lenstra, are also mathematicians. Jan Karel Lenstra is the former director of the Netherlands Centrum Wiskunde & Informatica (CWI). Hendrik Lenstra was the Chairman of the Program Committee of the International Congress of Mathematicians in 2010. Scientific contributions Lenstra has worked principally in computational number theory. He is well known for: * Co-discovering of the Lenstra–Lenstra–Lovász lattice basis reduction algorithm (in 1982); * Developi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Courtauld Institute
The Courtauld Institute of Art (), commonly referred to as The Courtauld, is a self-governing college of the University of London specialising in the study of the history of art and conservation. It is among the most prestigious specialist colleges for the study of the history of art in the world and is known for the disproportionate number of directors of major museums drawn from its small body of alumni. The art collection is known particularly for its French Impressionist and Post-Impressionist paintings and is housed in the Courtauld Gallery. The Courtauld is based in Somerset House, in the Strand in London. In 2019, The Courtauld's teaching and research activities temporarily relocated to Vernon Square, London, while its Somerset House site underwent a major regeneration project. History The Courtauld was founded in 1932 through the philanthropic efforts of the industrialist and art collector Samuel Courtauld, the diplomat and collector Lord Lee of Fareham, and the ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vatican City
Vatican City (), officially the Vatican City State ( it, Stato della Città del Vaticano; la, Status Civitatis Vaticanae),—' * german: Vatikanstadt, cf. '—' (in Austria: ') * pl, Miasto Watykańskie, cf. '—' * pt, Cidade do Vaticano—' * es, Ciudad del Vaticano—' is an independent city-state, microstate and enclave within Rome, Italy. Also known as The Vatican, the state became independent from Italy in 1929 with the Lateran Treaty, and it is a distinct territory under "full ownership, exclusive dominion, and sovereign authority and jurisdiction" of the Holy See, itself a sovereign entity of international law, which maintains the city state's temporal, diplomatic, and spiritual independence. With an area of and a 2019 population of about 453, it is the smallest state in the world both by area and population. As governed by the Holy See, Vatican City State is an ecclesiastical or sacerdotal-monarchical state ruled by the Pope who is the bishop of Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giacomo Gaetani Stefaneschi
Giacomo Gaetani Stefaneschi (c. 1270 – 23 June 1343) was an Italian cardinal deacon. Life Born in Rome, he was the son of the senator Pietro Stefaneschi and his wife, Perna Orsini. He received his early education at Rome, and was sent to the University of Paris to pursue higher studies. After three years he received the degree of Master of Arts, and intended to devote himself to the study of philosophy and Holy Scripture, having already begun to teach at the university, when his parents recalled him to Italy in order that he should study canon and civil law. He was highly esteemed by Pope Celestine V, who made him canon of St. Peter's and auditor of the Rota. He was created cardinal-deacon of the titular Church of San Giorgio in Velabro on 17 December 1295 by Pope Boniface VIII, who also sent him as legate to Cesena, Forlì, Faenza and Bologna in 1296 to suppress civil disturbances. Pope John XXII appointed him protector of the Minorites, 23 July 1334. He was never ordai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardinal (Catholicism)
A cardinal ( la, Sanctae Romanae Ecclesiae cardinalis, literally 'cardinal of the Holy Roman Church') is a senior member of the clergy of the Catholic Church. Cardinals are created by the ruling pope and typically hold the title for life. Collectively, they constitute the College of Cardinals. Their most solemn responsibility is to elect a new pope in a conclave, almost always from among themselves (with a few historical exceptions), when the Holy See is vacant. During the period between a pope's death or resignation and the election of his successor, the day-to-day governance of the Holy See is in the hands of the College of Cardinals. The right to participate in a conclave is limited to cardinals who have not reached the age of 80 years by the day the vacancy occurs. In addition, cardinals collectively participate in papal consistories (which generally take place annually), in which matters of importance to the Church are considered and new cardinals may be created. Cardina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stefaneschi Triptych
The ''Stefaneschi Altarpiece'' is a triptych by the Italian painter Giotto (c. 1267 – 1337), commissioned by Cardinal Giacomo Gaetani Stefaneschi to serve as an altarpiece for one of the altars of Old St. Peter's Basilica in Rome. It is now at the Pinacoteca Vaticana, Rome. Description It is a rare example in Giotto's work of a documented commission, and includes Giotto's signature, although the date, like most dates for Giotto, is disputed, and many scholars feel the artist's workshop was responsible for its execution. It had long been thought to have been made for the main altar of the church; more recent research suggests that it was placed on the "canon's altar", located in the nave, just to the left of the huge arched opening into the transept. The altar was freestanding, and the altarpiece is painted on both sides so it could be seen by the congregation from the front and the canons of the church from the back. The central front panel represents Saint Peter enthron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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