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1544 In Science
The year 1544 in science and technology involved some significant events. Botany * Orto botanico di Pisa botanical garden established by Cosimo I de' Medici, Grand Duke of Tuscany, under the direction of Luca Ghini, who also creates the first herbarium. * Publication of Valerius Cordus' herbal ''Historia Plantarum''. * Publication of Pietro Andrea Mattioli's ''Discorsi'' ("Commentaries") on the ''Materia Medica'' of Dioscorides, adding descriptions of some plants not of medical use, including the first reference to the tomato in Europe. Geography * Sebastian Münster's description of the world, '' Cosmographia'', is published in Basel. Geology * Georgius Agricola publishes ''De ortu et causis subterraneorum'', laying the foundations of modern physical geology. Geophysics * Magnetic dip is first described in Europe by Georg Hartmann. Mathematics * Michael Stifel's ''Arithmetica integra'' is published in Nuremberg, containing the first European use of multiplication by juxtap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Dip
Magnetic dip, dip angle, or magnetic inclination is the angle made with the horizontal by Earth's magnetic field, Earth's magnetic field lines. This angle varies at different points on Earth's surface. Positive values of inclination indicate that the magnetic field of Earth is pointing downward, into Earth, at the point of measurement, and negative values indicate that it is pointing upward. The dip angle is in principle the angle made by the needle of a vertically held compass, though in practice ordinary compass needles may be weighted against dip or may be unable to move freely in the correct plane. The value can be measured more reliably with a special instrument typically known as a dip circle. Dip angle was discovered by the German engineer Georg Hartmann in 1544. A method of measuring it with a dip circle was described by Robert Norman in England in 1581. Explanation Magnetic dip results from the tendency of a magnet to align itself with lines of magnetic field. As ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German People
Germans (, ) are the natives or inhabitants of Germany, or sometimes more broadly any people who are of German descent or native speakers of the German language. The Basic Law for the Federal Republic of Germany, constitution of Germany, implemented in 1949 following the end of World War II, defines a German as a German nationality law, German citizen. During the 19th and much of the 20th century, discussions on German identity were dominated by concepts of a common language, culture, descent, and history.. "German identity developed through a long historical process that led, in the late 19th and early 20th centuries, to the definition of the German nation as both a community of descent (Volksgemeinschaft) and shared culture and experience. Today, the German language is the primary though not exclusive criterion of German identity." Today, the German language is widely seen as the primary, though not exclusive, criterion of German identity. Estimates on the total number of Germ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1609 In Science
The year 1609 in science and technology involved some significant events. Astronomy * July 26 – English scientist Thomas Harriot becomes the first to draw an astronomical object after viewing it through a telescope: he draws a map of the Moon, preceding Galileo by several months. * Johannes Kepler publishes '' Astronomia nova'', containing his first two laws of planetary motion. Biology * Charles Butler publishes ''The Feminine Monarchie, or, A Treatise Concerning Bees''. Exploration * April 4 – Henry Hudson sets out from Amsterdam in the ''Halve Maen''. ** August 28 – Hudson finds Delaware Bay. ** September 11–12 – Hudson sails into Upper New York Bay and begins a journey up the Hudson River. Medicine * Louise Bourgeois Boursier publishes ''Diverse Observations on Sterility; Loss of the Ovum after Fecundation, Fecundity and Childbirth; Diseases of Women and of Newborn Infants'' in Paris, the first book on obstetrics written by a woman. * Jacques Guillemeau pub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French People
French people () are a nation primarily located in Western Europe that share a common Culture of France, French culture, History of France, history, and French language, language, identified with the country of France. The French people, especially the native speakers of langues d'oïl from northern and central France, are primarily descended from Roman people, Romans (or Gallo-Romans, western European Celts, Celtic and Italic peoples), Gauls (including the Belgae), as well as Germanic peoples such as the Franks, the Visigoths, the Suebi and the Burgundians who settled in Gaul from east of the Rhine after the fall of the Roman Empire, as well as various later waves of lower-level irregular migration that have continued to the present day. The Norsemen also settled in Normandy in the 10th century and contributed significantly to the ancestry of the Normans. Furthermore, regional ethnic minorities also exist within France that have distinct lineages, languages and cultures such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Duchesne
Joseph Duchesne or du Chesne (Quercetan, Latin Josephus Quercetanus) ( 1544, Lectoure – 1609) was a French physician. A follower of Paracelsus, he is now remembered for important if transitional alchemical theories. He called sugar toxic, saying: “Under its whiteness, sugar hides a great blackness.” Biography Duchesne was born around 1544 in Lectoure, Armagnac (region), Armagnac and studied at Montpellier, and then at Basel, where he received a medical diploma in 1573. During the 1570s at Lyon, he married Anne Trie the granddaughter of Guillaume Budé, and became a Calvinist convert. He went into medical practice and became physician to Francis, Duke of Anjou. He left Lyon in 1580 for Kassel in Hesse, and moved on to Geneva, where in 1584 he received citizenship. Duchesne was elected to the Council of Two Hundred in 1587, and undertook diplomatic missions to Bern, Basel, Schaffhausen and Zürich in the years 1589 to 1596. In 1594 he became a member of the Council of Sixty. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornithology
Ornithology, from Ancient Greek ὄρνις (''órnis''), meaning "bird", and -logy from λόγος (''lógos''), meaning "study", is a branch of zoology dedicated to the study of birds. Several aspects of ornithology differ from related disciplines, due partly to the high visibility and the aesthetic appeal of birds. It has also been an area with a large contribution made by amateurs in terms of time, resources, and financial support. Studies on birds have helped develop key concepts in biology including evolution, behaviour and ecology such as the definition of species, the process of speciation, instinct, learning, ecological niches, guild (ecology), guilds, insular biogeography, phylogeography, and bird conservation, conservation. While early ornithology was principally concerned with descriptions and distributions of species, ornithologists today seek answers to very specific questions, often using birds as models to test hypotheses or predictions based on theories. Most mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cologne
Cologne ( ; ; ) is the largest city of the States of Germany, German state of North Rhine-Westphalia and the List of cities in Germany by population, fourth-most populous city of Germany with nearly 1.1 million inhabitants in the city proper and over 3.1 million people in the Cologne Bonn Region, Cologne Bonn urban region. Cologne is also part of the Rhine-Ruhr metropolitan region, the List of EU metropolitan regions by GDP#2021 ranking of top four German metropolitan regions, second biggest metropolitan region by GDP in the European Union. Centered on the left bank of the Rhine, left (west) bank of the Rhine, Cologne is located on the River Rhine (Lower Rhine), about southeast of the North Rhine-Westphalia state capital Düsseldorf and northwest of Bonn, the former capital of West Germany. The city's medieval Cologne Cathedral () was the History of the world's tallest buildings#Churches and cathedrals: Tallest buildings between the 13th and 20th century, world's talles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Turner (naturalist)
William Turner (1509/10 – 13 July 1568) was an English people, English Anglicanism#Anglican divines, divine and Protestant Reformer, reformer, a physician and a natural history, natural historian. He has been called “the father of English botany”.Samson, Alexander. ''Locus Amoenus: Gardens and Horticulture in the Renaissance'', 2012 :4 He studied medicine in Italy, and was a friend of the great Swiss people, Swiss naturalist, Conrad Gessner. He was an early herbalist and ornithology, ornithologist, and it is in these fields that the most interest lies today. He is known as being one of the first “parson-naturalists” in England. He first published ''Libellus de Re herbaria'' in Latin in 1538, and later translated it into English because he believed herbalists were not sharing their knowledge. Turner's works were condemned under Henry VIII and under Mary I of England, Mary Tudor. Biography Early years Turner was born in Morpeth, Northumberland, Morpeth, Northumberlan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logarithm
In mathematics, the logarithm of a number is the exponent by which another fixed value, the base, must be raised to produce that number. For example, the logarithm of to base is , because is to the rd power: . More generally, if , then is the logarithm of to base , written , so . As a single-variable function, the logarithm to base is the inverse of exponentiation with base . The logarithm base is called the ''decimal'' or ''common'' logarithm and is commonly used in science and engineering. The ''natural'' logarithm has the number as its base; its use is widespread in mathematics and physics because of its very simple derivative. The ''binary'' logarithm uses base and is widely used in computer science, information theory, music theory, and photography. When the base is unambiguous from the context or irrelevant it is often omitted, and the logarithm is written . Logarithms were introduced by John Napier in 1614 as a means of simplifying calculation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exponent
In mathematics, exponentiation, denoted , is an operation involving two numbers: the ''base'', , and the ''exponent'' or ''power'', . When is a positive integer, exponentiation corresponds to repeated multiplication of the base: that is, is the product of multiplying bases: b^n = \underbrace_.In particular, b^1=b. The exponent is usually shown as a superscript to the right of the base as or in computer code as b^n. This binary operation is often read as " to the power "; it may also be referred to as " raised to the th power", "the th power of ", or, most briefly, " to the ". The above definition of b^n immediately implies several properties, in particular the multiplication rule:There are three common notations for multiplication: x\times y is most commonly used for explicit numbers and at a very elementary level; xy is most common when variables are used; x\cdot y is used for emphasizing that one talks of multiplication or when omitting the multiplication sign would ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiplication By Juxtaposition
Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division (mathematics), division. The result of a multiplication operation is called a ''Product (mathematics), product''. Multiplication is often denoted by the cross symbol, , by the mid-line dot operator, , by juxtaposition, or, in programming languages, by an asterisk, . The multiplication of whole numbers may be thought of as repeated addition; that is, the multiplication of two numbers is equivalent to adding as many copies of one of them, the ''multiplicand'', as the quantity of the other one, the ''multiplier''; both numbers can be referred to as ''factors''. This is to be distinguished from term (arithmetic), ''terms'', which are added. :a\times b = \underbrace_ . Whether the first factor is the multiplier or the multiplicand may be ambiguous or depend upon context. For example, the expression 3 \times 4 , can be phrased as "3 ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
