Citizendia
Your Ad Here

This article is about a spherical model of the Earth, or similar. For other uses, see globe (disambiguation).
A modern world, raised-relief globe
A modern world, raised-relief globe
A Baroque era celestial globe
A Baroque era celestial globe
A French "navisphere": a type of celestial globe formerly used for navigation at sea
A French "navisphere": a type of celestial globe formerly used for navigation at sea

A globe is a three-dimensional scale model of Earth (terrestrial globe) or other spheroid celestial body such as a planet, star, or moon. A raised-relief map or terrain model is a three-dimensional representation usually of terrain Baroque art redirects here Please disambiguate such links to Baroque painting, Baroque sculpture, etc In mathematics the dimension of a Space is roughly defined as the minimum number of Coordinates needed to specify every point within it See also Scale model A physical model is a smaller or larger physical copy of an object EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 It may also (celestial globe) refer to a spherical representation of the celestial sphere, showing the apparent positions of the stars in the sky. In Astronomy and Navigation, the celestial sphere is an imaginary rotating Sphere of "gigantic Radius " A star is a massive luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the Energy on Earth The sky is the part of the Atmosphere or of Outer space visible from the surface of any Astronomical object.

The word "globe" comes from the Latin word globus, meaning round mass or sphere. Latin ( lingua Latīna, laˈtiːna is an Italic language, historically spoken in Latium and Ancient Rome. "Globose" redirects here See also Globose nucleus. A sphere (from Greek σφαίρα - sphaira, "globe

Contents

Terrestrial and planetary globes

A globe is the only geographical representation that has negligible distortion over large areas; all flat maps are created using a map projection that inevitably introduces an increasing amount distortion the larger the area that the map shows. A map projection is any method of representing the Surface of a sphere or other shape on a plane. A typical scale for a terrestrial globe is roughly 1:40 million. The concept of scale is applicable if a system is represented proportionally by another system

Sometimes a globe has relief, showing topography; in the case of a globe of the Earth the elevations are exaggerated, otherwise they would be hardly visible. Topography ( topo-, "place" and graphia, "writing" is the study of Earth 's Surface features or those of Planets Most modern globes are also imprinted with parallels and meridians so that one can (if only approximately due to scale) tell where a specific point on the surface of the planet is located.

Celestial globes

See also: Armillary sphere

Celestial globes show the apparent positions of the stars in the sky. A star is a massive luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the Energy on Earth The sky is the part of the Atmosphere or of Outer space visible from the surface of any Astronomical object. They omit the Sun, Moon and planets because the positions of these bodies vary relative to those of the stars, but the ecliptic, along which the Sun moves, is indicated. The Sun (Sol is the Star at the center of the Solar System. The ecliptic is the apparent path that the Sun traces out in the sky during the year

A potential issue arises regarding the "handedness" of celestial globes. If the globe is constructed so that the stars are in the positions they actually occupy on the imaginary celestial sphere, then the star field will appear back-to-front on the surface of the globe (all the constellations will appear as their mirror images). This is because the view from Earth, positioned at the centre of the celestial sphere, is of the inside of the celestial sphere, whereas the celestial globe is viewed from the outside. For this reason, celestial globes may be produced in mirror image, so that at least the constellations appear the "right way round". Some modern celestial globes address this problem by making the surface of the globe transparent. The stars can then be placed in their proper positions and viewed through the globe, so that the view is of the inside of the celestial sphere, as it is from Earth.

History

The earliest known globe was constructed by the scholar Crates of Mallus in Cilicia (now Çukurova in modern-day Turkey) around 150 BC. Crates, of Mallus in Cilicia (modern day Southeastern Anatolia Region Turkey) was a Greek language Grammarian and Stoic Geography Cilicia extended along the Aegean coast east from Pamphylia, to Mount Amanus ( Gavurdağı Mount) which separated it from Syria Çukurova is the modern name for the ancient region of Cilicia (or to be more precise of Cilicia Pedia, "the flat Cilicia" in southern Turkey An ancient celestial globe that still exists was made about 150 AD as part of a sculpture, called the Farnese Atlas, in the Naples Museum, Naples, Italy. The Farnese Atlas is a 2nd-century Roman marble copy of a Hellenistic Sculpture of Atlas kneeling with a Globe weighing heavily on his shoulders The Naples National Archaeological Museum ( Museo Archeologico Nazionale di Napoli) is located in Naples Italy, at the northwest corner of the original Greek Naples ( Napoli, Neapolitan: Nàpule) is a historic City in southern Italy, the Capital of the Italy (Italia officially the Italian Republic, (Repubblica Italiana is located on the Italian Peninsula in Southern Europe, and on the two largest [1] The first globe of the Old World was constructed in the Muslim world during the Middle Ages. The Old World consists of those parts of Earth known to Europeans Asians and Africans in the 15th century The term Muslim world (or Islamic world) has several meanings [2] The oldest existing terrestrial globe was made by Martin Behaim in Nürnberg, Germany, in 1474. Martin (of Behaim ( October 6, 1459 &ndash July 29, 1507) (or Behem, Boemia or Bohemia) was a German Germany, officially the Federal Republic of Germany ( ˈbʊndəsʁepuˌbliːk ˈdɔʏtʃlant is a Country in Central Europe. [1] A facsimile globe showing America was made by Martin Waldseemueller in 1507. Martin Waldseemüller (Latinized Martinus Ilacomilus or Hylacomylus, c Another early globe, the Hunt-Lenox Globe, ca. The Hunt-Lenox Globe or Lenox Globe, dating from ca 1503-07 or 1510, is the second or third oldest known terrestrial Globe, after the Erdapfel 1507, is thought to be the source of the phrase "Here be dragons. Here Be Dragons is a Historical novel by Sharon Penman, first published in 1985. "

Manufacture

Mass-produced globes are typically covered by a printed paper map. The most common type has long, thin gores (strips) of paper that narrow to a point at the North Pole and the South Pole. A gore is a segment of a three-dimensional shape fabricated from a two- Dimensional material The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is subject to the caveats explained below defined as the point in the northern The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is the southernmost point on the surface of the Earth. [3] Then a small disk is used to paper over the inevitable irregularities at the poles. The more gores there are, the less stretching and crumpling is required to make the paper map fit the sphere. From a geometric point of view, all points on a sphere are equivalent – one could select any arbitrary point on the Earth, and create a paper map that covers the Earth with strips that come together at that point and the antipodal point. In Mathematics, the antipodal point of a point on the surface of a sphere is the point which is diametrically opposite it — so situated that a line drawn from the However, as the Earth is an oblate spheroid and not a perfect sphere, bulging slightly at the equator, to correctly represent the true shape of the Earth using such paper strips is more difficult. An oblate Spheroid is a rotationally symmetric Ellipsoid having a polar axis shorter than the diameter of the equatorial circle whose plane

A globe is usually mounted at an angle on bearings. A bearing is a device to permit constrained relative motion between two parts typically rotation or linear movement In addition to making it easy to use this mounting also represents the angle of the planet in relation to its sun and the spin of the planet. This makes it easy to visualize how days and seasons change. A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the A season is one of the major divisions of the Year, generally based on yearly periodic changes in Weather.

Notable large globes

References

  1. ^ a b Microsoft Encarta Encyclopedia 2003.
  2. ^ Mark Silverberg. Origins of Islamic Intolerence.
  3. ^ http://netpbm.sourceforge.net/doc/globe.jpg
  4. ^ "The Mystery of Hitler’s Globe Goes Round and Round", by Michael Kimmelman, September 18, 2007. Accessed September 18, 2007.

See also

External links

The Dymaxion map of the Earth is a projection of a global map onto the surface of a Polyhedron, which can then be unfolded to a net Emery Molyneux (; died June 1598 was an Elizabethan maker of Globes mathematical instruments and ordnance. Johannes Schöner (1477-1547 a German astronomer and cartographer made some of the oldest Globes still in existence A virtual globe is a 3D software model or representation Google Earth is a Virtual globe program that was originally called Earth Viewer and was created by Keyhole Inc, a company acquired by Google in 2004 WorldWind is a free Open source Virtual globe developed by NASA and open source community for use on Personal computers running Microsoft

Dictionary

globe

-noun

  1. Any spherical object
  2. The planet Earth.
  3. A spherical model of Earth or any planet.
© 2009 citizendia.org; parts available under the terms of GNU Free Documentation License, from http://en.wikipedia.org
 Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic