Geography (from Greek: γεωγραφία, geographia. Combination of Greek words 'Geo' (The Earth) and 'Graphien' (to describe), literally "earth description") is a field of science devoted to the study of the lands, features, inhabitants, and phenomena of Earth. The first recorded use of the word γεωγραφία was as a title of a book by Greek scholar Eratosthenes (276–194 BC). Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be. While geography is specific to Earth, many concepts can be applied more broadly to other celestial bodies in the field of planetary science. Geography has been called "a bridge between natural science and social science disciplines." (Full article...)
Eruptions along the length of the MCVF began between 1.6 and 5.3 million years ago. At least 23 eruptions have occurred throughout its eruptive history. This volcanic activity ranged from effusive to explosive, with magma compositions ranging from basaltic to rhyolitic. Because the MCVF has a high elevation and consists of a cluster of mostly high altitude, non-overlapping volcanoes, subglacial activity is likely to have occurred under less than 800 m (2,600 ft) of glacial ice. The style of this glaciation promoted meltwater escape during eruptions. The steep profile of the volcanic field and its subglacial landforms support this hypothesis. As a result, volcanic features in the MCVF that interacted with glacial ice lack rocks that display evidence of abundant water during eruption, such as hyaloclastite and pillow lava. (Full article...)
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The volcano-caldera complex in the north of Lombok
In 1257, a catastrophic eruption occurred at the Samalas volcano on the Indonesian island of Lombok. The event had a probable Volcanic Explosivity Index of 7, making it one of the largest volcanic eruptions during the current Holocene epoch. It left behind a large caldera that contains Lake Segara Anak. Later volcanic activity created more volcanic centres in the caldera, including the Barujari cone, which remains active.
The event created eruption columns reaching tens of kilometres into the atmosphere and pyroclastic flows that buried much of Lombok and crossed the sea to reach the neighbouring island of Sumbawa. The flows destroyed human habitations, including the city of Pamatan, which was the capital of a kingdom on Lombok. Ash from the eruption fell as far as 340 kilometres (210 mi) away in Java; the volcano deposited more than 10 cubic kilometres (2.4 cu mi) of rocks and ash. (Full article...)
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The frontispiece of the 1920 edition of Tod's Annals and Antiquities of Rajast'han
Lieutenant-Colonel James Tod (20 March 1782 – 18 November 1835) was an officer of the British East India Company and an Oriental scholar. He combined his official role and his amateur interests to create a series of works about the history and geography of India, and in particular the area then known as Rajputana that corresponds to the present day state of Rajasthan, and which Tod referred to as Rajast'han.
Tod was born in London and educated in Scotland. He joined the East India Company as a military officer and travelled to India in 1799 as a cadet in the Bengal Army. He rose quickly in rank, eventually becoming captain of an escort for an envoy in a Sindian royal court. After the Third Anglo-Maratha War, during which Tod was involved in the intelligence department, he was appointed Political Agent for some areas of Rajputana. His task was to help unify the region under the control of the East India Company. During this period Tod conducted most of the research that he would later publish. Tod was initially successful in his official role, but his methods were questioned by other members of the East India Company. Over time, his work was restricted and his areas of oversight were significantly curtailed. In 1823, owing to declining health and reputation, Tod resigned his post as Political Agent and returned to England. (Full article...)
From the 1930s, Coventry City Council began replacing the city's narrow medieval streets with modern roads, to cope with a rapidly growing population. City architect Donald Gibson began work in 1939 on a city centre redevelopment plan which expanded in scope following World War II, in which large areas of the city were destroyed by German bombs. The shopping area was rebuilt first, followed by the ring road, which was constructed in six stages from 1959. Early stages were built with at-grade junctions, cycle tracks and footpaths, envisaged as a surface-level linear park. Following traffic surveys in the early 1960s, however, the council amended the design to include grade separation and the weaving sections. Research by the city engineer indicated that it was the first urban road in the world to use this configuration at such a small scale. The road was completed in 1974, with an overall cost of £14.5 million (equivalent to £160,800,000 in 2021). (Full article...)
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1930s council housing on Wexford Road
Knowle West is a neighbourhood situated on a low plateau in the south of Bristol, England, about 2 miles (3 km) from the centre of the city. Historically in Somerset, most of the area is coterminous with the Filwood ward of Bristol City Council, although a small part of the estate lies within Knowle ward to the east. To the west are Bishopsworth and Hartcliffe. To the north are Bedminster and Windmill Hill and to the south Whitchurch Park and Hengrove. In 2008 the population was estimated to be 11,787. The area is approximately 1.26 square miles (3.3 km2).
There is evidence of late Iron Age and Roman settlements in the area. At the time of the Domesday Book, Knowle was a rural area assessed at a taxable value of two geld units. Knowle West remained rural in character until the 1930s, when a council housing estate was developed to provide homes for people displaced by slum clearance in the centre of the city. (Full article...)
The Columbia Slough is a narrow waterway, about 19 miles (31 km) long, in the floodplain of the Columbia River in the U.S. state of Oregon. From its source in the Portland suburb of Fairview, the Columbia Slough meanders west through Gresham and Portland to the Willamette River, about 1 mile (1.6 km) from the Willamette's confluence with the Columbia. It is a remnant of the historic wetlands between the mouths of the Sandy River to the east and the Willamette River to the west. Levees surround much of the main slough as well as many side sloughs, detached sloughs, and nearby lakes. Drainage district employees control water flows with pumps and floodgates. Tidal fluctuations cause reverse flow on the lower slough.
The Columbia floodplain, formed by geologic processes including lava flows, volcanic eruptions, and the Missoula Floods, is part of the Portland Basin, which extends across the Columbia River from Multnomah County, Oregon, into Clark County, Washington. Five percent of Oregon's population, about 158,000 people, live in the slough watershed of about 51 square miles (130 km2). Municipal wells near the upper slough provide supplemental drinking water to Portland and nearby cities. The cities, the drainage districts, the county, and a regional government, Metro, have overlapping jurisdictions in the watershed. A regional agency operates Portland International Airport along the middle slough and marine terminals near the lower slough. The Oregon Department of Environmental Quality (DEQ) and the city's Bureau of Environmental Services (BES) deal with environmental issues. (Full article...)
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The Chalukya dynasty ([tʃaːɭukjə]) was a Classical Indian dynasty that ruled large parts of southern and central India between the 6th and the 12th centuries. During this period, they ruled as three related yet individual dynasties. The earliest dynasty, known as the "Badami Chalukyas", ruled from Vatapi (modern Badami) from the middle of the 6th century. The Badami Chalukyas began to assert their independence at the decline of the Kadamba kingdom of Banavasi and rapidly rose to prominence during the reign of Pulakeshin II. After the death of Pulakeshin II, the Eastern Chalukyas became an independent kingdom in the eastern Deccan. They ruled from Vengi until about the 11th century. In the western Deccan, the rise of the Rashtrakutas in the middle of the 8th century eclipsed the Chalukyas of Badami before being revived by their descendants, the Western Chalukyas, in the late 10th century. These Western Chalukyas ruled from Kalyani (modern Basavakalyan) until the end of the 12th century.
The rule of the Chalukyas marks an important milestone in the history of South India and a golden age in the history of Karnataka. The political atmosphere in South India shifted from smaller kingdoms to large empires with the ascendancy of Badami Chalukyas. A Southern India-based kingdom took control and consolidated the entire region between the Kaveri and the Narmada rivers. The rise of this empire saw the birth of efficient administration, overseas trade and commerce and the development of new style of architecture called "Chalukyan architecture". Kannada literature, which had enjoyed royal support in the 9th century Rashtrakuta court found eager patronage from the Western Chalukyas in the Jain and Veerashaiva traditions. The 11th century saw the patronage of Telugu literature under the Eastern Chalukyas. (Full article...)
The Assyrians were divided into mutually antagonistic churches, including the Syriac Orthodox Church, the Church of the East, and the Chaldean Catholic Church. Before World War I, they lived in mountainous and remote areas of the Ottoman Empire (some of which were effectively stateless). The empire's nineteenth-century centralization efforts led to increased violence and danger for the Assyrians. (Full article...)
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Moser, c. 1980s
Meinhard Michael Moser (13 March 1924 – 30 September 2002) was an Austrian mycologist. His work principally concerned the taxonomy, chemistry, and toxicity of the gilledmushrooms (Agaricales), especially those of the genus Cortinarius, and the ecology of ectomycorrhizal relationships. His contributions to the Kleine Kryptogamenflora von Mitteleuropa series of mycological guidebooks were well regarded and widely used. In particular, his 1953 Blätter- und Bauchpilze (Agaricales und Gastromycetes) [The Gilled and Gasteroid Fungi (Agaricales and Gastromycetes)], which became known as simply "Moser", saw several editions in both the original German and in translation. Other important works included a 1960 monograph on the genus Phlegmacium (now considered part of Cortinarius) and a 1975 study of members of Cortinarius, Dermocybe, and Stephanopus in South America, co-authored with the mycologist Egon Horak.
After showing interest in natural sciences in his youth, Moser studied at the University of Innsbruck. His university career began during World War II however, and was soon interrupted by military service. Stationed as a translator in eastern Europe, he was captured and placed in a prisoner-of-war camp. He was released in 1948, subsequently returning to Innsbruck to complete his studies. After completing his doctorate in 1950, Moser worked in England for six months, researching the symbiotic relationships between plants and fungi. Upon his return to Austria, he joined the Federal Forestry Research Institute, where he remained until 1968, conducting influential research on the use of mycorrhizal fungi in reforestation. He began lecturing at the University of Innsbruck in 1956, and in 1972 became the inaugural head of the first Institute of Microbiology in Austria. He remained with the Institute until his retirement in 1991, and his scientific studies continued until his death in 2002. An influential mycologist who described around 500 new taxa, Moser received awards throughout his life, and numerous fungal taxa have been named in his honour. (Full article...)
The Kennet and Avon Canal is a waterway in southern England with an overall length of 87 miles (140 km), made up of two lengths of navigable river linked by a canal. The name is used to refer to the entire length of the navigation rather than solely to the central canal section. From Bristol to Bath the waterway follows the natural course of the River Avon before the canal links it to the River Kennet at Newbury, and from there to Reading on the River Thames. In all, the waterway incorporates 105 locks.
The two river stretches were made navigable in the early 18th century, and the 57-mile (92 km) canal section was constructed between 1794 and 1810. In the late 19th and early 20th centuries, the canal gradually fell into disuse after the opening of the Great Western Railway. In the latter half of the 20th century the canal was restored in stages, largely by volunteers. After decades of dereliction and much restoration work, it was fully reopened in 1990. The Kennet and Avon Canal has been developed as a popular heritage tourism destination for boating, canoeing, fishing, walking and cycling, and is also important for wildlife conservation. (Full article...)
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Lithograph of Weissenburg in 1902
SMS Weissenburg was one of the first ocean-going battleships of the Imperial German Navy. She was the third pre-dreadnought of the Brandenburg class, which also included her sister ships Brandenburg, Wörth, and Kurfürst Friedrich Wilhelm. Weissenburg was laid down in 1890 in the AG Vulcan dockyard in Stettin, launched in 1891, and completed in 1894. The Brandenburg-class battleships were unique for their era in that they carried six large-caliber guns in three twin turrets, as opposed to four guns in two turrets, as was the standard in other navies. Weissenburg served with I Division during the first decade of her service with the fleet. This period was generally limited to training exercises and goodwill visits to foreign ports. These training maneuvers were nevertheless very important to developing German naval tactical doctrine in the two decades before World War I, especially under the direction of Alfred von Tirpitz. Weissenburg, along with her three sisters, saw only one major overseas deployment during this period, to China in 1900–1901, during the Boxer Uprising. The ship underwent a major modernization in 1904–1905. (Full article...)
The Willamette River (/wɪˈlæmɪt/(listen)wil-AM-it) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is 187 miles (301 km) long, lying entirely in northwestern Oregon in the United States. Flowing northward between the Oregon Coast Range and the Cascade Range, the river and its tributaries form the Willamette Valley, a basin that contains two-thirds of Oregon's population, including the state capital, Salem, and the state's largest city, Portland, which surrounds the Willamette's mouth at the Columbia.
Originally created by plate tectonics about 35 million years ago and subsequently altered by volcanism and erosion, the river's drainage basin was significantly modified by the Missoula Floods at the end of the most recent ice age. Humans began living in the watershed over 10,000 years ago. There were once many tribal villages along the lower river and in the area around its mouth on the Columbia. Indigenous peoples lived throughout the upper reaches of the basin as well. (Full article...)
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Willow Lake (located in the Big Butte Creek watershed), with Mount McLoughlin in the background
Big Butte Creek's watershed was originally settled over 8,000 years ago by the Klamath, Upper Umpqua, and Takelma tribes of Native Americans. In the Rogue River Wars of the 1850s, most of the Native Americans were either killed or forced onto Indian reservations. The first non-indigenous settlers arrived in the 1860s, naming the creek after Snowy Butte, an early name for Mount McLoughlin. In the late 19th century, the watershed was primarily used for agriculture and logging. The small city of Butte Falls was incorporated in 1911, and remains the only incorporated town within the watershed's boundaries. (Full article...)
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Yellow iron oxide-covered lava rock on the flank of Kamaʻehuakanaloa
Kamaʻehuakanaloa Seamount (previously known as Lōʻihi) is an active submarine volcano about 22 mi (35 km) off the southeast coast of the island of Hawaii. The top of the seamount is about 3,200 ft (975 m) below sea level. This seamount is on the flank of Mauna Loa, the largest shield volcano on Earth. Kamaʻehuakanaloa is the newest volcano in the Hawaiian–Emperor seamount chain, a string of volcanoes that stretches about 3,900 mi (6,200 km) northwest of Kamaʻehuakanaloa. Unlike most active volcanoes in the Pacific Ocean that make up the active plate margins on the Pacific Ring of Fire, Kamaʻehuakanaloa and the other volcanoes of the Hawaiian–Emperor seamount chain are hotspot volcanoes and formed well away from the nearest plate boundary. Volcanoes in the Hawaiian Islands arise from the Hawaii hotspot, and as the youngest volcano in the chain, Kamaʻehuakanaloa is the only Hawaiian volcano in the deep submarine preshield stage of development.
Kamaʻehuakanaloa began forming around 400,000 years ago and is expected to begin emerging above sea level about 10,000–100,000 years from now. At its summit, Kamaʻehuakanaloa Seamount stands more than 10,000 ft (3,000 m) above the seafloor, making it taller than Mount St. Helens was before its catastrophic 1980 eruption. A diverse microbial community resides around Kamaʻehuakanaloa many hydrothermal vents. (Full article...)
Built in a fertile agricultural area, it developed from the 3rd century BC onward as a Berber, then proto-Carthaginian, settlement before being the capital of the kingdom of Mauretania. It grew rapidly under Roman rule from the 1st century AD onward and expanded to cover about 42 hectares (100 acres) with a 2.6 km (1.6 mi) circuit of walls. The city gained a number of major public buildings in the 2nd century, including a basilica, temple and triumphal arch. Its prosperity, which was derived principally from olive growing, prompted the construction of many fine town-houses with large mosaic floors. (Full article...)
Asia (/ˈeɪʒə/(listen), UK also /ˈeɪʃə/) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometers, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilizations. Its 4.7 billion people constitute roughly 60% of the world's population, having more people than all other continents combined. (Full article...)
Photograph: Maull & Fox; restoration: Adam Cuerden
Fanny Bullock Workman (1859–1925) was an American geographer, cartographer, explorer, travel writer, and mountaineer. Together with her husband, William Hunter Workman, she traveled by bicycle through Switzerland, France, Italy, Spain, Algeria and India; after taking up climbing in the Himalayas, she set a women's altitude record on Pinnacle Peak, reaching 23,000 feet (7,000 m). She published eight travel books, with particular focus on the lives of women in the countries she visited, and championed women's rights and women's suffrage.
The Catalan Atlas is a medieval map in the Catalan language, created in 1375. Described as "the zenith of medieval map-work", it is the earliest known chart to use a compass rose. It was produced by the Majorcan cartographic school and is attributed to Abraham Cresques, a Jewish book illuminator described by a contemporary as a master of mappae mundi. It has been in the royal library of France (now the Bibliothèque nationale de France) since the time of King Charles V. The atlas originally consisted of six vellum leaves, each about 64.5 by 50 cm (25.4 by 19.7 in), folded vertically and painted in various colours including gold and silver. This picture is a montage of eight pages (four leaves) of the atlas, depicting Europe, northern Africa and Asia.
A compass rose, sometimes called a windrose or rose of the winds, is a figure on a compass, map, nautical chart, or monument used to display the orientation of the cardinal directions (north, east, south, and west) and their intermediate points. It is also the term for the graduated markings found on the traditional magnetic compass. Today, a form of compass rose is found on, or featured in, almost all navigation systems, including nautical charts, non-directional beacons, VHF omnidirectional range systems, GPS, and similar equipment.
Illustration of the Ptolemaicgeocentric model of the Universe (the theory that the Earth is the center of the universe) by Portuguese cosmographer and cartographer Bartolomeu Velho. Taken from his treatise Cosmographia, made in Paris, 1568. Notice the distances of the bodies to the centre of the Earth (left) and the times of revolution, in years (right).
A geological map of Yosemite National Park (full size), showing the Cathedral Peak Granodiorite, the largest unit in the Tuolumne Intrusive Suite, which in turn is the largest granitic suite in the park. Cathedral Peak Granodiorite Rest of the Tuolumne Intrusive Suite
The Robinson projection is a projection of a world map showing the entire Earth at once. It was specifically created in an attempt to find a good compromise to the problem of showing the whole globe as a single flat image. The projection was devised by Arthur H. Robinson in 1963; distortion is severe close to the poles, but quickly declines to moderate levels as latitudes decrease. This Robinson-projection map, with standard parallels of 38°N and 38°S, was produced by the United States Central Intelligence Agency and shows the world as of February 2016.
Author: John Mitchell; scan: Library of Congress, Geography and Map Division.
The Mitchell Map is the most comprehensive map of eastern North America made during the colonial era. Measuring about 6.5 ft (2.0 m) wide by 4.5 ft (1.4 m) high, it was produced by John Mitchell in 1757 in eight separate sheets. The map was used during the Treaty of Paris for defining the boundaries of the United States, and remains important today for resolving border disputes.
An isothermal map of the world, based on the research of Alexander von Humboldt, a German naturalist whose work laid the foundation for the sciences of physical geography and meteorology, among other things. By delineating "isothermal lines", he simultaneously suggested the idea and devised the means of comparing the climatic conditions of various countries.
A composite satellite image of the geography of Africa, the Earth's second-largest continent, and its adjacent islands. Separated from Europe by the Mediterranean Sea and from much of Asia by the Red Sea, Africa is joined to Asia at its northeast extremity by the Isthmus of Suez. For geopolitical purposes, the Sinai Peninsula – east of the Suez Canal – is often considered part of Africa, although geographically it belongs in Asia. Africa can be divided into a number of geographic zones: The Atlas Mountains in the north, the Sahara, the coastal plains, and the inner plateaus.
An animation showing the unfolding of a Dymaxion map, a projection of a world map onto the surface of a polyhedron (in this case, an icosahedron) and then flattened to form a two-dimensional map which retains most of the relative proportional integrity of the globe map. This type of map was invented by Buckminster Fuller and is one of several of his inventions to use the name Dymaxion.
Zhang Heng began his career as a minor civil servant in Nanyang. Eventually, he became Chief Astronomer, Prefect of the Majors for Official Carriages, and then Palace Attendant at the imperial court. His uncompromising stance on historical and calendrical issues led to his becoming a controversial figure, preventing him from rising to the status of Grand Historian. His political rivalry with the palace eunuchs during the reign of Emperor Shun (r. 125–144) led to his decision to retire from the central court to serve as an administrator of Hejian Kingdom in present-day Hebei. Zhang returned home to Nanyang for a short time, before being recalled to serve in the capital once more in 138. He died there a year later, in 139. (Full article...)
The Mariana Trench is an oceanic trench located in the western Pacific Ocean, about 200 kilometres (124 mi) east of the Mariana Islands; it is the deepest oceanic trench on Earth. It is crescent-shaped and measures about 2,550 km (1,580 mi) in length and 69 km (43 mi) in width. The maximum known depth is 10,984 ± 25 metres (36,037 ± 82 ft; 6,006 ± 14 fathoms; 6.825 ± 0.016 mi) at the southern end of a small slot-shaped valley in its floor known as the Challenger Deep. The deepest point of the trench is more than 2 km (1.2 mi) farther from sea level than the peak of Mount Everest. (Full article...)
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Location of Challenger Deep within the Mariana Trench and western Pacific Ocean
A map of the United States showing its 50 states, federal district and five inhabited territories. Alaska, Hawaii, and territories are shown at different scales and that the Aleutian Islands and the uninhabitednorthwestern Hawaiian Islands are omitted from this map. The United States of America is a federal republic consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States), five major territories, and various minor islands. Both the states and the United States as a whole are each sovereign jurisdictions. The Tenth Amendment to the United States Constitution allows states to exercise all powers of government not delegated to the federal government. Each state has its own constitution and government, and all states and their residents are represented in the federal Congress, a bicameral legislature consisting of the Senate and the House of Representatives. Each state is represented by two senators, while representatives are distributed among the states in proportion to the most recent constitutionally mandated decennial census. Additionally, each state is entitled to select a number of electors to vote in the Electoral College, the body that elects the president of the United States, equal to the total of representatives and senators in Congress from that state. The federal district does not have representatives in the Senate, but has a non-voting delegate in the House, and it is also entitled to electors in the Electoral College. Congress can admit more states, but it cannot create a new state from territory of an existing state or merge of two or more states into one without the consent of all states involved, and each new state is admitted on an equal footing with the existing states. (Full article...)
Generation Z (or more commonly Gen Z for short), colloquially known as zoomers, is the demographiccohort succeeding Millennials and preceding Generation Alpha. Researchers and popular media use the mid-to-late 1990s as starting birth years and the early 2010s as ending birth years. Most members of Generation Z are children of Generation X or younger Baby Boomers. The older members may be the parents of the younger members of Generation Alpha. (Full article...)
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listen) wil-AM-it) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is 187 miles (301 km) long, lying entirely in northwestern Oregon in the United States. Flowing northward between the Oregon Coast Range and the Cascade Range, the river and its tributaries form the Willamette Valley, a basin that contains two-thirds of Oregon's population, including the state capital, Salem, and the state's largest city, Portland, which surrounds the Willamette's mouth at the Columbia.
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listen), UK also /ˈeɪʃə/) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometers, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilizations. Its 4.7 billion people constitute roughly 60% of the world's population, having more people than all other continents combined. (Full article...)
Photograph: Maull & Fox; restoration: Adam CuerdenFanny Bullock Workman (1859–1925) was an American geographer, cartographer, explorer, travel writer, and mountaineer. Together with her husband, William Hunter Workman, she traveled by bicycle through Switzerland, France, Italy, Spain, Algeria and India; after taking up climbing in the Himalayas, she set a women's altitude record on Pinnacle Peak, reaching 23,000 feet (7,000 m). She published eight travel books, with particular focus on the lives of women in the countries she visited, and championed women's rights and women's suffrage.
Map credit: Abraham CresquesThe Catalan Atlas is a medieval map in the Catalan language, created in 1375. Described as "the zenith of medieval map-work", it is the earliest known chart to use a compass rose. It was produced by the Majorcan cartographic school and is attributed to Abraham Cresques, a Jewish book illuminator described by a contemporary as a master of mappae mundi. It has been in the royal library of France (now the Bibliothèque nationale de France) since the time of King Charles V. The atlas originally consisted of six vellum leaves, each about 64.5 by 50 cm (25.4 by 19.7 in), folded vertically and painted in various colours including gold and silver. This picture is a montage of eight pages (four leaves) of the atlas, depicting Europe, northern Africa and Asia.
Illustration credit: Joaquim Alves Gaspar, after Jorge de AguiarA compass rose, sometimes called a windrose or rose of the winds, is a figure on a compass, map, nautical chart, or monument used to display the orientation of the cardinal directions (north, east, south, and west) and their intermediate points. It is also the term for the graduated markings found on the traditional magnetic compass. Today, a form of compass rose is found on, or featured in, almost all navigation systems, including nautical charts, non-directional beacons, VHF omnidirectional range systems, GPS, and similar equipment.
Photo credit: Joaquim Alves GasparIllustration of the Ptolemaic geocentric model of the Universe (the theory that the Earth is the center of the universe) by Portuguese cosmographer and cartographer Bartolomeu Velho. Taken from his treatise Cosmographia, made in Paris, 1568. Notice the distances of the bodies to the centre of the Earth (left) and the times of revolution, in years (right).
Map: Grandiose, based on a map by the United States Geological SurveyA geological map of Yosemite National Park (full size), showing the Cathedral Peak Granodiorite, the largest unit in the Tuolumne Intrusive Suite, which in turn is the largest granitic suite in the park.
Map credit: Central Intelligence AgencyThe Robinson projection is a projection of a world map showing the entire Earth at once. It was specifically created in an attempt to find a good compromise to the problem of showing the whole globe as a single flat image. The projection was devised by Arthur H. Robinson in 1963; distortion is severe close to the poles, but quickly declines to moderate levels as latitudes decrease. This Robinson-projection map, with standard parallels of 38°N and 38°S, was produced by the United States Central Intelligence Agency and shows the world as of February 2016.
Map: Strebe, using GeocartA gnomonic projection of a portion of the northern hemisphere, centered on the geographic North Pole. Such projections display all great circles as straight lines, resulting in any line segment on a gnomonic map showing the shortest route between the segment's two endpoints.
Map credit: Fernão Vaz DouradoA pre-Mercator nautical chart of West Africa from 1571, by Portuguese cartographer Fernão Vaz Dourado. It is done using the so-called "plane chart model", where observed latitudes and magnetic directions were plotted directly into the plane, with a constant scale, as if the Earth were flat.
Author: John Mitchell; scan: Library of Congress, Geography and Map Division.The Mitchell Map is the most comprehensive map of eastern North America made during the colonial era. Measuring about 6.5 ft (2.0 m) wide by 4.5 ft (1.4 m) high, it was produced by John Mitchell in 1757 in eight separate sheets. The map was used during the Treaty of Paris for defining the boundaries of the United States, and remains important today for resolving border disputes.
Map: William C. Woodbridge; Restoration: Jujutacular and Lise BroerAn isothermal map of the world, based on the research of Alexander von Humboldt, a German naturalist whose work laid the foundation for the sciences of physical geography and meteorology, among other things. By delineating "isothermal lines", he simultaneously suggested the idea and devised the means of comparing the climatic conditions of various countries.
Map: Strebe, using GeocartThe Craig retroazimuthal is a modified cylindrical map projection created by James Ireland Craig in 1909. It preserves the direction from any place to one other, predetermined place while avoiding some of the distortion of the Hammer retroazimuthal projection. This projection is sometimes known as the Mecca projection because Craig, who had worked in Egypt as a cartographer, created it to help Muslims find the qibla.
Photo credit: NASAThe world's largest compass rose, drawn on the desert floor at Edwards Air Force Base in California, United States. Painted on the dry lake near Dryden Flight Research Center, it is inclined to magnetic north and is used by pilots for calibrating heading indicators.
Photo: NASAA composite satellite image of the geography of Africa, the Earth's second-largest continent, and its adjacent islands. Separated from Europe by the Mediterranean Sea and from much of Asia by the Red Sea, Africa is joined to Asia at its northeast extremity by the Isthmus of Suez. For geopolitical purposes, the Sinai Peninsula – east of the Suez Canal – is often considered part of Africa, although geographically it belongs in Asia. Africa can be divided into a number of geographic zones: The Atlas Mountains in the north, the Sahara, the coastal plains, and the inner plateaus.
Map: Strebe, using GeocartThe Winkel tripel projection is a modified azimuthal map projection proposed by Oswald Winkel in 1921. The arithmetic mean of the equirectangular projection and the Aitoff projection, it was intended as a compromise between minimizing three kinds of distortion: area, direction and distance.
Image: Chris RywaltAn animation showing the unfolding of a Dymaxion map, a projection of a world map onto the surface of a polyhedron (in this case, an icosahedron) and then flattened to form a two-dimensional map which retains most of the relative proportional integrity of the globe map. This type of map was invented by Buckminster Fuller and is one of several of his inventions to use the name Dymaxion.
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