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Promptuary Diagram 3
The promptuary, also known as the ''card abacus'' is a calculating machine invented by the 16th-century Scottish mathematician John Napier and described in his book ''Rabdology, Rabdologiae'' in which he also described Napier's bones. It is an extension of Napier's Bones, using two sets of rods to achieve multi-digit multiplication without the need to write down intermediate results, although some mental addition is still needed to calculate the result. The rods for the multiplicand are similar to Napier's Bones, with repetitions of the values. The set of rods for the multiplier are shutters or masks for each digit placed over the multiplicand rods. The results are then tallied from the digits showing as with other lattice multiplication methods. The final form described by Napier took advantage of symmetries to compact the rods, and used the materials of the day to hold system of metal plates, placed inside a wooden frame. Design of the Promptuary The promptuary consists of f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calculating Machine
A mechanical calculator, or calculating machine, is a mechanical device used to perform the basic operations of arithmetic automatically, or a simulation like an analog computer or a slide rule. Most mechanical calculators were comparable in size to small desktop computers and have been rendered obsolete by the advent of the electronic calculator and the digital computer. Surviving notes from Wilhelm Schickard in 1623 reveal that he designed and had built the earliest known apparatus fulfilling the widely accepted definition of a mechanical calculator (a counting machine with an automated tens-carry). His machine was composed of two sets of technologies: first an abacus made of Napier's bones, to simplify multiplications and divisions first described six years earlier in 1617, and for the mechanical part, it had a dialed pedometer to perform additions and subtractions. A study of the surviving notes shows a machine that could have jammed after a few entries on the same dia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madrid
Madrid ( ; ) is the capital and List of largest cities in Spain, most populous municipality of Spain. It has almost 3.5 million inhabitants and a Madrid metropolitan area, metropolitan area population of approximately 7 million. It is the Largest cities of the European Union by population within city limits, second-largest city in the European Union (EU), and its wikt:monocentric, monocentric Madrid metropolitan area, metropolitan area is the List of metropolitan areas in Europe by population, second-largest in the EU.United Nations Department of Economic and Social AffairWorld Urbanization Prospects (2007 revision), (United Nations, 2008), Table A.12. Data for 2007. The municipality covers geographical area. Madrid lies on the Manzanares (river), River Manzanares in the central part of the Iberian Peninsula at about above mean sea level. The capital city of both Spain and the surrounding Community of Madrid, autonomous community of Madrid (since 1983), it is also th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanical Calculators
A mechanical calculator, or calculating machine, is a mechanical device used to perform the basic operations of arithmetic automatically, or a simulation like an analog computer or a slide rule. Most mechanical calculators were comparable in size to small desktop computers and have been rendered obsolete by the advent of the electronic calculator and the digital computer. Surviving notes from Wilhelm Schickard in 1623 reveal that he designed and had built the earliest known apparatus fulfilling the widely accepted definition of a mechanical calculator (a counting machine with an automated tens-carry). His machine was composed of two sets of technologies: first an abacus made of Napier's bones, to simplify multiplications and divisions first described six years earlier in 1617, and for the mechanical part, it had a dialed pedometer to perform additions and subtractions. A study of the surviving notes shows a machine that could have jammed after a few entries on the same dial. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kensington
Kensington is an area of London in the Royal Borough of Kensington and Chelsea, around west of Central London. The district's commercial heart is Kensington High Street, running on an east–west axis. The north-east is taken up by Kensington Gardens, containing the Albert Memorial, the Serpentine Gallery and John Hanning Speke, Speke's monument. South Kensington and Gloucester Road, London, Gloucester Road are home to Imperial College London, the Royal College of Music, the Royal Albert Hall, Natural History Museum, London, Natural History Museum, Victoria and Albert Museum, and Science Museum, London, Science Museum. The area is also home to many embassies and consulates. Name The Manorialism, manor of ''Chenesitone'' is listed in the Domesday Book of 1086, which in the Old English language, Anglo-Saxon language means "Chenesi's List of generic forms in place names in Ireland and the United Kingdom, ton" (homestead/settlement). One early spelling is ''Kesyngton'', as wri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biblioteca Nacional De España
The (National Library of Spain) is the national library of Spain. It is the largest public library in the country, and one of the largest in the world. Founded in 1711, it is an autonomous agency attached to the Ministry of Culture since 1990. Its headquarters is located on the Paseo de Recoletos in Madrid, sharing the building with the National Archaeological Museum. History The library was founded by King Philip V in 1711 as the Royal Library or Palace Public Library. The Royal Letters Patent that he granted, the predecessor of the current legal deposit requirement, made it mandatory for printers to submit a copy of every book printed in Spain to the library. In 1836, the Crown transferred the library to the Ministry of Governance and it was renamed as National Library. A year later, women were allowed access to the library for the first time, after a petition from writer Antonia Gutiérrez was granted by Queen Regent Maria Christina. During the 19th century, co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prince Of Wales
Prince of Wales (, ; ) is a title traditionally given to the male heir apparent to the History of the English monarchy, English, and later, the British throne. The title originated with the Welsh rulers of Kingdom of Gwynedd, Gwynedd who, from the late 12th century, used it (albeit inconsistently) to assert their supremacy over the other Welsh rulers. However, to mark the finalisation of his conquest of Wales, in 1301, Edward I of England invested his son Edward of Caernarfon with the title, thereby beginning the tradition of giving the title to the heir apparent when he was the monarch's son or grandson. The title was later claimed by the leader of a Welsh Revolt, Welsh rebellion, Owain Glyndŵr, from 1400 until 1415. King Charles III created his son William, Prince of Wales, William Prince of Wales on 9 September 2022, the day after his accession to the throne, with formal letters patent issued on 13 February 2023. The title has become a point of controversy in Wales. Welsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philip II Of Spain
Philip II (21 May 152713 September 1598), sometimes known in Spain as Philip the Prudent (), was King of Spain from 1556, King of Portugal from 1580, and King of Naples and List of Sicilian monarchs, Sicily from 1554 until his death in 1598. He was also ''jure uxoris'' King of England and List of Irish monarchs, Ireland from Wedding of Mary I of England and Philip of Spain, his marriage to Queen Mary I in 1554 until her death in 1558. Further, he was Duke of Milan from 1540. From 1555, he was Lord of the Seventeen Provinces of the Habsburg Netherlands, Netherlands. The son of Emperor Charles V and Isabella of Portugal, Holy Roman Empress, Isabella of Portugal, Philip inherited his father's Spanish Empire in 1556, and succeeded to the Kingdom of Portugal, Portuguese throne in 1580 following a dynastic crisis. The Spanish conquests Spanish conquest of the Inca Empire, of the Inca Empire and of the Philippines, named in his honor by Ruy López de Villalobos, were completed during h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spanish Royal Academy Of Sciences
The Spanish Royal Academy of Sciences (Spanish: ''Real Academia de Ciencias Exactas, Físicas y Naturales'') is an academic institution and learned society that was founded in Madrid in 1847. It is dedicated to the study and research of mathematics, physics, chemistry, biology, engineering, and related sciences. History The forerunner of the modern Academy of Sciences, the Academy of Mathematics, was created in Madrid in 1582, during the reign of Philip II. It evolved from the environment of cooperation among the cosmographers, architects and civil engineers that served the monarch, and also involved prominent artillery experts and military engineers. The initiative was motivated by an interest that existed in the Spain of the late sixteenth century in promoting the teaching of mathematics with an eye to its practical applications in areas as diverse as mercantile calculation, cosmography, astrology on one hand, and the art of navigation and specific problems relating to militar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diccionario Enciclopédico Hispano-americano De Literatura, Ciencias Y Artes
The ''Diccionario enciclopédico hispano-americano de literatura, ciencias y artes'' (1887–99) was a Spanish language general encyclopedia produced by Montaner y Simón in Barcelona, Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur .... References Further reading * External links * (fulltext) Encyclopedias in Spanish 1887 non-fiction books Spanish online encyclopedias Reference works in the public domain 19th-century encyclopedias {{encyclopedia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyhedron
In geometry, a polyhedron (: polyhedra or polyhedrons; ) is a three-dimensional figure with flat polygonal Face (geometry), faces, straight Edge (geometry), edges and sharp corners or Vertex (geometry), vertices. The term "polyhedron" may refer either to a solid figure or to its boundary surface (mathematics), surface. The terms solid polyhedron and polyhedral surface are commonly used to distinguish the two concepts. Also, the term ''polyhedron'' is often used to refer implicitly to the whole structure (mathematics), structure formed by a solid polyhedron, its polyhedral surface, its faces, its edges, and its vertices. There are many definitions of polyhedron. Nevertheless, the polyhedron is typically understood as a generalization of a two-dimensional polygon and a three-dimensional specialization of a polytope, a more general concept in any number of dimensions. Polyhedra have several general characteristics that include the number of faces, topological classification by Eule ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Binomial (polynomial)
In algebra, a binomial is a polynomial that is the sum of two terms, each of which is a monomial. It is the simplest kind of a sparse polynomial after the monomials. Definition A binomial is a polynomial which is the sum of two monomials. A binomial in a single indeterminate (also known as a univariate binomial) can be written in the form :a x^m - bx^n , where and are numbers, and and are distinct non-negative integers and is a symbol which is called an indeterminate or, for historical reasons, a variable. In the context of Laurent polynomials, a ''Laurent binomial'', often simply called a ''binomial'', is similarly defined, but the exponents and may be negative. More generally, a binomial may be written as: :a\, x_1^\dotsb x_i^ - b\, x_1^\dotsb x_i^ Examples :3x - 2x^2 :xy + yx^2 :0.9 x^3 + \pi y^2 :2 x^3 + 7 Operations on simple binomials *The binomial , the difference of two squares, can be factored as the product of two other binomials: :: x^2 - y^2 = (x - y) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Archaeological Museum Of Spain
The National Archaeological Museum (; MAN) is a archaeology museum in Madrid, Spain. It is located on Calle de Serrano beside the Plaza de Colón, sharing its building with the National Library of Spain. It is one of the National Museums of Spain and it is attached to the Ministry of Culture. History The museum was founded in 1867 by a Royal Decree of Isabella II as a depository for numismatic, archaeological, ethnographical and decorative art collections of the Spanish monarchs. The establishment of the museum was predated by a previous unmaterialised proposal by the Royal Academy of History in 1830 to create a museum of antiquities. The museum was originally located in the Embajadores district of Madrid. In 1895, it moved to a building designed specifically to house it, a neoclassical design by architect Francisco Jareño, built from 1866 to 1892. In 1968, renovation and extension works considerably increased its area. The museum closed for renovation in 2008 and r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
