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Octant Projection
The octant projection or octants projection, is a type of map projection proposed the first time, in 1508, by Leonardo da Vinci in his Codex Atlanticus. Leonardo's authorship would be demonstrated by Christopher Tyler, who stated "For those projections dated later than 1508, his drawings should be effectively considered the original precursors..". In fact, there is a sketch of it on a page in the Codex Atlanticus manuscripts, made from the very hand of Leonardo, being Leonardo's sketch, the first known description of the ''octant projection''. The same page of the Codex contains sketches of eight other projections of the globe (those known in the late fifteenth century), being studied by Leonardo, ranging from the Ptolemy's conical planisphere projection to the one proposed by Rosselli, Description The octant projection it is the first known polyhedral map projection. The projection is neither conformal nor equal-area, bound by circular arcs, with no meridians and no parallel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cahill–Keyes Projection
The Cahill–Keyes projection is a polyhedral compromise map projection first proposed by Gene Keyes in 1975. The projection is a refinement of an earlier 1909 projection by Bernard Cahill. The projection was designed to achieve a number of desirable characteristics, namely symmetry of component maps (octants), scalability allowing the map to continue to work well even at high resolution, uniformity of geocells, metric-based joining edges, minimized distortion compared to a globe, and an easily understood orientation to enhance general usability and teachability. Construction The Cahill–Keyes projection was designed with four fundamental considerations in mind: visual fidelity to a globe, proportional geocells, 10,000 km lengths for each of its octants' three main joined edges, and an M-shape Master-Map profile. The resulting map comprises 8 octants. Each octant is an equilateral triangle with three segments per side. One side runs along the equator, and the oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonardo's World Map
Leonardo's unique equilateral triangular design is applied for a world map. It is a map drawn using the " octant projection" and dated by Richard Henry Major to approximately 1514. It was found loosely inserted among a Codex of Leonardo da Vinci. It features an early use of the name America. The map incorporates information from the travels of Amerigo Vespucci, published in 1503 and 1505. Additionally, the map depicts the Arctic as an ocean and Antarctica as a continent of about the correct size. The likelihood that the map, found among Leonardo da Vinci's papers preserved in Windsor, was drawn by Leonardo himself has not been completely accepted by scholars. According to Major, who published the map in 1865 and defended its authenticity, the date indicated would be doubtful also because Florida is drawn as an island with the name of TERRA FLORIDA. Description Da Vinci developed the concept of dividing the surface of the globe into eight spherical equilateral triangles based on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Map Projections
This is a summary of map projections that have articles of their own on Wikipedia or that are otherwise notable. Because there is no limit to the number of possible map projections, there can be no comprehensive list. Table of projections *The first known popularizer/user and not necessarily the creator. Key Type of projection ; Cylindrical: In standard presentation, these map regularly-spaced meridians to equally spaced vertical lines, and parallels to horizontal lines. ; Pseudocylindrical: In standard presentation, these map the central meridian and parallels as straight lines. Other meridians are curves (or possibly straight from pole to equator), regularly spaced along parallels. ; Conic: In standard presentation, conic (or conical) projections map meridians as straight lines, and parallels as arcs of circles. ; Pseudoconical: In standard presentation, pseudoconical projections represent the central meridian as a straight line, other meridians as complex curves, and pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Map
A world map is a map of most or all of the surface of Earth. World maps, because of their scale, must deal with the problem of projection. Maps rendered in two dimensions by necessity distort the display of the three-dimensional surface of the earth. While this is true of any map, these distortions reach extremes in a world map. Many techniques have been developed to present world maps that address diverse technical and aesthetic goals. Charting a world map requires global knowledge of the earth, its oceans, and its continents. From prehistory through the Middle ages, creating an accurate world map would have been impossible because less than half of Earth's coastlines and only a small fraction of its continental interiors were known to any culture. With exploration that began during the European Renaissance, knowledge of the Earth's surface accumulated rapidly, such that most of the world's coastlines had been mapped, at least roughly, by the mid-1700s and the continental in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cahill Butterfly Projection-1915
Cahill (, or ) is a name of Irish origin. It is the anglicised version of the Gaelic "Ó Cathail" meaning "descendant of Cathal". "Cathal" consists of two parts: "cath" means battle; the second could be "val" (rule), so that the name as a whole meant "battle ruler" or "strong in battle", or it could be "all" (great), so that the name as a whole meant "great warrior". People with the surname Notable people with the surname include: * Barry Cahill (actor) (1921–2012), Canadian-born actor *Kymba Cahill (radio announcer) (born 1980) Australian radio announcer * Barry Cahill (Gaelic footballer) (born 1981), Irish Gaelic football player * Bernard J.S. Cahill (1866–1944), American architect and cartographer * Brendan J. Cahill (born 1963), American catholic bishop * Charles Cahill (ice hockey) (1904–1954), Canadian ice hockey player * Charles Cahill (rugby league) (1916–2007), Australian rugby league footballer and coach * Christina Cahill (''née'' Boxer, born 1957) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonardo Da Vinci’s Mappamundi
Leonardo is a masculine given name, the Italian, Spanish, and Portuguese equivalent of the English, German, and Dutch name, Leonard. People Notable people with the name include: * Leonardo da Vinci (1452–1519), Italian Renaissance scientist, inventor, engineer, sculptor, and painter Artists * Leonardo Schulz Cardoso, Brazilian singer * Emival Eterno da Costa (born 1963), Brazilian singer known as Leonardo * Leonardo de Mango (1843–1930), Italian-born Turkish painter * Leonardo DiCaprio (born 1974), American actor * Leonardo Pieraccioni (born 1965), Italian actor and director Athletes * Leonardo Araújo (born 1969), usually known as Leonardo, Brazilian World Cup-winning footballer, and former sporting director of Paris Saint Germain * Leonardo Fioravanti (born 1997), Italian surfer * Leonardo Lourenço Bastos (born 1975), Brazilian footballer * Leonardo Bittencourt, German footballer * Leonardo Bonucci (born 1987), Italian footballer * Leonardo Candi (born 1997), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imago Mundi
''Imago Mundi'', or in full ''Imago Mundi: International Journal for the History of Cartography'', is a semiannual peer-reviewed academic journal about mapping, established in 1935 by Leo Bagrow. It covers the history of early maps, cartography, and map-related ideas. Articles are in English and have abstracts in French, German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ..., Spanish, and English. Each volume also contains three reference sections ( book reviews, bibliography, and chronicle) that provide a summary of current developments in the field. It was published originally by Imago Mundi Ltd. with (electronic), 0308-5694 (paper). References Notes External links * History journals Geography journals Cartography Publications established in 1935 English-lang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolf Erik Nordenskjöld
Adolf (also spelt Adolph or Adolphe, Adolfo and when Latinised Adolphus) is a given name used in German-speaking countries, Scandinavia, the Netherlands and Flanders, France, Italy, Spain, Portugal, Latin America and to a lesser extent in various Central European and East European countries with non-Germanic languages, such as Lithuanian Adolfas and Latvian Ādolfs. Adolphus can also appear as a surname, as in John Adolphus, the English historian. The female forms Adolphine and Adolpha are far more rare than the male names. The name is a compound derived from the Old High German ''Athalwolf'' (or ''Hadulf''), a composition of ''athal'', or ''adal'', meaning "noble" (or '' had(u)''-, meaning "battle, combat"), and ''wolf''. The name is cognate to the Anglo-Saxon name '' Æthelwulf'' (also Eadulf or Eadwulf). The name can also be derived from the ancient Germanic elements "Wald" meaning "power", "brightness" and wolf (Waldwulf). Due to negative associations with Adolf Hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Cartographic Journal
''The Cartographic Journal'' (first published June 1964) is an established peer-reviewed academic journal of record and comment that is published on behalf of the British Cartographic Society by Taylor & Francis. An official journal of the International Cartographic Association (ICA), it contains authoritative papers on all aspects of cartography: the art, science and technology of presenting, communicating and analysing spatial relationships by means of maps and other geographical representations of the Earth's surface. This includes coverage of related technologies where appropriate, for example, remote sensing and geographical information systems (GIS), the internet, satellite navigation and positioning systems, laser scanning, and terrain modelling. The ''Journal'' also publishes articles on social, political and historical aspects of cartography. Occasionally, Special Issues are published that focus on a particular research theme. Its readership is drawn from over 180 count ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Map Projection
In cartography, map projection is the term used to describe a broad set of transformations employed to represent the two-dimensional curved surface of a globe on a plane. In a map projection, coordinates, often expressed as latitude and longitude, of locations from the surface of the globe are transformed to coordinates on a plane. Projection is a necessary step in creating a two-dimensional map and is one of the essential elements of cartography. All projections of a sphere on a plane necessarily distort the surface in some way and to some extent. Depending on the purpose of the map, some distortions are acceptable and others are not; therefore, different map projections exist in order to preserve some properties of the sphere-like body at the expense of other properties. The study of map projections is primarily about the characterization of their distortions. There is no limit to the number of possible map projections. More generally, projections are considered in several ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
