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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 recursion, 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 Droste, a Dutch brand of cocoa solids, cocoa, with an image designed by Jan Misset in 1904. The Droste effect has since been used in the packaging of a variety of products. Apart from advertising, the effect is also seen in the Dutch artist M. C. Escher's 1956 lithograph ''Print Gallery (M. C. Escher), Print Gallery'', which portrays a gallery that depicts itself. The effect has been widely used on the covers of comic books, mainly in the 1940s. Effect Origins The ''Droste'' effect is named after the image on the tins and boxes of Droste cocoa solids, cocoa powder which displayed a nurse carrying ... [...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 f ... [...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 sph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morton Salt
Morton Salt is an American food company producing salt for food, Water purification, water conditioning, industrial, agricultural, and road/highway use. Based in Chicago, the business is North America's leading producer and marketer of salt. It is a subsidiary of holding company Stone Canyon Industries Holdings, Inc. History The company began in Chicago, Illinois, in 1848 as a small sales agency, Richmond & Company, started by Alonzo Richmond as agents for Onondaga salt companies to sell their salt to the Midwestern United States, Midwest. In 1910, the business, which had by that time become both a manufacturer and a merchant of salt, was incorporated as the Morton Salt Company. In 1889, it was renamed after the owner, Joy Morton. Joy Morton started working for E. I. Wheeler in 1880, buying into the company for $10,000, with which he bought a fleet of lake boats to move salt west. In 1896, Alfred Bevis founded the Bevis Rock Salt Company, building on the failed Lyons salt compa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematical Association Of America
The Mathematical Association of America (MAA) is a professional society that focuses on mathematics accessible at the undergraduate level. Members include university A university () is an educational institution, institution of tertiary education and research which awards academic degrees in several Discipline (academia), academic disciplines. ''University'' is derived from the Latin phrase , which roughly ..., college, and high school teachers; graduate and undergraduate students; pure and applied mathematicians; computer scientists; statisticians; and many others in academia, government, business, and industry. The MAA was founded in 1915 and is headquartered at 11 Dupont in the Dupont Circle, Washington, D.C., Dupont Circle neighborhood of Washington, D.C. The organization publishes mathematics journals and books, including the ''American Mathematical Monthly'' (established in 1894 by Benjamin Finkel), the most widely read mathematics journal in the world according to re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native Americans In The United States
Native Americans (also called American Indians, First Americans, or Indigenous Americans) are the Indigenous peoples of the Americas, Indigenous peoples of the United States, particularly of the Contiguous United States, lower 48 states and Alaska. They may also include any Americans whose origins lie in any of the indigenous peoples of North or South America. The United States Census Bureau publishes data about "American Indians and Alaska Natives", whom it defines as anyone "having origins in any of the original peoples of North and South America ... and who maintains tribal affiliation or community attachment". The census does not, however, enumerate "Native Americans" as such, noting that the latter term can encompass a broader set of groups, e.g. Native Hawaiians, which it tabulates separately. The European colonization of the Americas from 1492 resulted in a Population history of Indigenous peoples of the Americas, precipitous decline in the size of the Native American ... [...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''; ) is a Public university, public research university in Leiden, Netherlands. Established in 1575 by William the Silent, William, Prince of Orange as a Protestantism, Protestant institution, it holds the distinction of being the oldest university in the Netherlands of today. 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 a second campus located in The Hague houses a liberal arts college (Leiden University College The Hague) and several of its faculties. It i ... [...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 was published 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. Beginning with the January 2025 issue, the editor-in-chief is Mark C. Wilson, succeeding past editor Erica Flapan. The cover regularly features mathematical visualizations. 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 reside outside the United States. By publishing high-level exposition, the ''Notices'' provides opportunities for mathematicians to find out what is going on in the field. Each is ... [...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. 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 art historian Sir Robert Witt. Originally the Courtauld was based in Home House, a townhouse designed by Robert Adam in Portman Square, Marylebone. The Strand block of Somerset House, designed by William Cham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vatican City
Vatican City, officially the Vatican City State (; ), is a Landlocked country, landlocked sovereign state and city-state; it is enclaved within Rome, the capital city of Italy and Bishop of Rome, seat of the Catholic Church. It became independent from the Kingdom of Italy in 1929 with the Lateran Treaty. It is governed by the Holy See, itself a Legal status of the Holy See, sovereign entity under international law, which maintains Temporal power of the Holy See, its temporal power, governance, diplomacy, and spiritual independence. ''Vatican'' is also used as a metonym for the pope, the central authority of the Roman Catholic Church, and the Holy See and the Roman Curia. With an area of and a population of about 882 in 2024, it is the List of countries and dependencies by area, smallest sovereign state in the world both by area and List of countries and dependencies by population, by population. It is among the List of national capitals by population, least populated capit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giacomo Gaetani Stefaneschi
Giacomo Gaetani Stefaneschi ( – 23 June 1343) was an Italian cardinal deacon in the Catholic Church. Life Giacomo was the son of the senator Pietro Stefaneschi and his wife, Perna Orsini. He was born in Rome; his birth year is disputed, with historians placing it in either 1260 or 1260. Stefaneschi 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. Pope Celestine V made Stefaneschi 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 disturbanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
