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Samarkand Sulci
Samarkand Sulci is a region of grooved terrain on the surface of Saturn's moon Enceladus. The feature is centered at 30.5° North Latitude, 326.8° West Longitude, and is approximately 383 kilometers long. Samarkand Sulci consists of three parts. The southern and eastern extensions bound Sarandib Planitia on its western and northern sides, respectively. The northern portions extends into a region of cratered terrain. Using ''Voyager 2'' images, Kargel and Pozio (1996) found that the northern and southern/eastern extensions of this feature are likely distinct features with different origins and ages. The portions surrounding Sarandib Planitia were characterized as sinuous "mountainous ridges" 1-1.5 km in height, and lying within relative topographic lows. Kargel and Pozio (1996) suggested that they might be fold belts, similar to North America's Appalachian Mountains. The northern portion of Samarkand Sulci was found to consist of linear fractures, suggesting that rathe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samarkand
fa, سمرقند , native_name_lang = , settlement_type = City , image_skyline = , image_caption = Clockwise from the top:Registan square, Shah-i-Zinda necropolis, Bibi-Khanym Mosque, view inside Shah-i-Zinda, Sher-Dor Madrasah in Registan, Timur's Mausoleum Gur-e-Amir. , image_alt = , image_flag = , flag_alt = , image_seal = Emblem of Samarkand.svg , seal_alt = , image_shield = , shield_alt = , etymology = , nickname = , motto = , image_map = , map_alt = , map_caption = , pushpin_map = Uzbekistan#West Asia#Asia , pushpin_map_alt = , pushpin_mapsize = 300 , pushpin_map_caption = Location in Uzbekistan , pushpin_label_position = , pushpin_relief = 1 , coordinates = , coor_pinpoint = , co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compression (physics)
In mechanics, compression is the application of balanced inward ("pushing") forces to different points on a material or structure, that is, forces with no net sum or torque directed so as to reduce its size in one or more directions.Ferdinand Pierre Beer, Elwood Russell Johnston, John T. DeWolf (1992), "Mechanics of Materials". (Book) McGraw-Hill Professional, It is contrasted with tension or traction, the application of balanced outward ("pulling") forces; and with shearing forces, directed so as to displace layers of the material parallel to each other. The compressive strength of materials and structures is an important engineering consideration. In uniaxial compression, the forces are directed along one direction only, so that they act towards decreasing the object's length along that direction. The compressive forces may also be applied in multiple directions; for example inwards along the edges of a plate or all over the side surface of a cylinder, so as to reduce it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of One Thousand And One Nights Characters
This is a list of characters in ''One Thousand and One Nights'' ( ''The Arabian Nights''), the classic, medieval collection of Middle-Eastern folk tales. Characters in the frame story Scheherazade Scheherazade or Shahrazad ( fa, شهرزاد}, ''Šahrzād'', or , ) is the legendary Persian queen who is the storyteller and narrator of ''The Nights''. She is the daughter of the kingdom's vizier and the older sister of Dunyazad. Against her father's wishes, she marries King Shahryar, who has vowed that he will execute a new bride every morning. For 1,001 nights, Scheherazade tells her husband a story, stopping at dawn with a cliffhanger. This forces the King to keep her alive for another day so that she could resume the tale at night. The name derives from the Persian ''šahr'' () and ''-zâd'' (); or from the Middle-Persian ''čehrāzād'', wherein ''čehr'' means 'lineage' and ''āzād'', 'noble' or 'exalted' (i.e. 'of noble or exalted lineage' or 'of noble appearance/origi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zaman Shah Durrani
Zaman Shah Durrani, or Zaman Shah Abdali (Persian: ; 1767 – 1844), was ruler of the Durrani Empire from 1793 until 1801. He was the grandson of Ahmad Shah Durrani and the fifth son of Timur Shah Durrani. An ethnic Pashtun, Zaman Shah became the third King of the Durrani Empire. Early Years Zaman Shah Durrani was born as the son of Timur Shah Durrani. The date of his birth is disputed however. Fayz Muhammad gives 1767 as his birth date, while Noelle-Karimi gives 1770 as his birth date. Zaman Shah had always wanted to follow his father, Timur Shah Durrani with his conquests in Punjab, however Timur Shah Durrani did not allow it, and Zaman Shah very early grew interests of being like his grandfather, Ahmad Shah Durrani, as a child he had dreamt of conquering Hindustan, but to no avail in aid as his father did not allow him to come on his campaigns. Zaman Shah Durrani had taken the Durrani throne in 1793 after his father, Timur Shah Durrani's death. Reign Opposition When Za ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peri-Banu (crater)
Peri-Banu is a crater in the northern hemisphere of Saturn's moon Enceladus. Peri-Banu was first discovered in ''Voyager 2'' images but was seen at much higher resolution, though near the terminator, by '' Cassini''. It is located at 62° North Latitude, 322.9° West Longitude and is 18 kilometers across. The western portion of the crater is largely absent, either buried or disrupted by the eastern margin of Samarkand Sulci. A large, dome-like structure occupies the interior of the crater, caused by infill of material from Samarkand Sulci or from viscous relaxation. The name comes from Pari-Banou, a genie-woman from ''Arabian Nights'', incarnation of beauty, who marries Ahmed Ahmad ( ar, أحمد, ʾAḥmad) is an Arabic male given name common in most parts of the Muslim world. Other spellings of the name include Ahmed and Ahmet. Etymology The word derives from the root (ḥ-m-d), from the Arabic (), from the ve ... and helps him fulfill the demands of his father. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ahmad (crater)
Ahmad is a crater in the northern hemisphere of Saturn's moon Enceladus. Ahmad was first discovered in ''Voyager 2'' images but was seen at much higher resolution, though near the terminator, by '' Cassini''. It is located at 58.8° North Latitude, 311.6° West Longitude and is 18.7 kilometers across. The western portion of the crater is largely absent, either buried or disrupted by the eastern margin of Samarkand Sulci. A large, dome-like structure occupies the interior of the crater, caused by infill of material from Samarkand Sulci or from viscous relaxation. Ahmad is named after a hero from ''Arabian Nights ''One Thousand and One Nights'' ( ar, أَلْفُ لَيْلَةٍ وَلَيْلَةٌ, italic=yes, ) is a collection of Middle Eastern folk tales compiled in Arabic during the Islamic Golden Age. It is often known in English as the ''Arabian ...''. He brings his father an apple and marries Peri-Banu. References Impact craters on Enceladus {{Crat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cassini–Huygens
''Cassini–Huygens'' ( ), commonly called ''Cassini'', was a space research, space-research mission by NASA, the European Space Agency (ESA), and the Italian Space Agency (ASI) to send a space probe to study the planet Saturn and its system, including its Rings of Saturn, rings and Moons of Saturn, natural satellites. The Large Strategic Science Missions, Flagship-class robotic spacecraft comprised both NASA's ''Cassini'' space probe and ESA's Huygens (spacecraft), ''Huygens'' lander (spacecraft), lander, which landed on Saturn's largest moon, Titan (moon), Titan. ''Cassini'' was the fourth space probe to visit Saturn and the first to enter its orbit, where it stayed from 2004 to 2017. The two craft took their names from the astronomers Giovanni Domenico Cassini, Giovanni Cassini and Christiaan Huygens. Launched aboard a Titan IV, Titan IVB/Centaur on October 15, 1997, ''Cassini'' was active in space for nearly 20 years, with 13 years spent orbiting Saturn and studying the pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rift
In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics. Typical rift features are a central linear downfaulted depression, called a graben, or more commonly a half-graben with normal faulting and rift-flank uplifts mainly on one side. Where rifts remain above sea level they form a rift valley, which may be filled by water forming a rift lake. The axis of the rift area may contain volcanic rocks, and active volcanism is a part of many, but not all, active rift systems. Major rifts occur along the central axis of most mid-ocean ridges, where new oceanic crust and lithosphere is created along a divergent boundary between two tectonic plates. ''Failed rifts'' are the result of continental rifting that failed to continue to the point of break-up. Typically the transition from rifting to spreading develops at a triple junction where three converging rifts meet over a hotspot. Two of these evolve to the poi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extensional Tectonics
Extensional tectonics is concerned with the structures formed by, and the tectonic processes associated with, the stretching of a planetary body's crust or lithosphere. Deformation styles The types of structure and the geometries formed depend on the amount of stretching involved. Stretching is generally measured using the parameter ''β'', known as the ''beta factor'', where : \beta = \frac \,, ''t''0 is the initial crustal thickness and ''t''1 is the final crustal thickness. It is also the equivalent of the strain parameter ''stretch''. Low beta factor In areas of relatively low crustal stretching, the dominant structures are high to moderate angle normal faults, with associated half grabens and tilted fault blocks. High beta factor In areas of high crustal stretching, individual extensional faults may become rotated to too low a dip to remain active and a new set of faults may be generated. Large displacements may juxtapose syntectonic sediments against metamorphic roc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fold Belt
Fold, folding or foldable may refer to: Arts, entertainment, and media * ''Fold'' (album), the debut release by Australian rock band Epicure * Fold (poker), in the game of poker, to discard one's hand and forfeit interest in the current pot * Above the fold and below the fold, the positioning of news items on a newspaper's front page according to perceived importance * Paper folding, or ''origami'', the art of folding paper Science, technology, and mathematics Biology * Protein folding, the physical process by which a polypeptide folds into its characteristic and functional three-dimensional structure ** Folding@home, a powerful distributed-computing project for simulating protein folding * Fold coverage, quality of a DNA sequence * Skin fold, an area of skin that folds Computing * Fold (higher-order function), a type of programming operation on data structures * fold (Unix), a computer program used to wrap lines to fit in a specified width *Folding (DSP implementation), a trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fracture
Fracture is the separation of an object or material into two or more pieces under the action of stress. The fracture of a solid usually occurs due to the development of certain displacement discontinuity surfaces within the solid. If a displacement develops perpendicular to the surface, it is called a normal tensile crack or simply a crack; if a displacement develops tangentially, it is called a shear crack, slip band or dislocation. Brittle fractures occur with no apparent deformation before fracture. Ductile fractures occur after visible deformation. Fracture strength, or breaking strength, is the stress when a specimen fails or fractures. The detailed understanding of how a fracture occurs and develops in materials is the object of fracture mechanics. Strength Fracture strength, also known as breaking strength, is the stress at which a specimen fails via fracture. This is usually determined for a given specimen by a tensile test, which charts the stress–strain cu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saturn
Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius of about nine and a half times that of Earth. It has only one-eighth the average density of Earth; however, with its larger volume, Saturn is over 95 times more massive. Saturn's interior is most likely composed of a core of iron–nickel and rock (silicon and oxygen compounds). Its core is surrounded by a deep layer of metallic hydrogen, an intermediate layer of liquid hydrogen and liquid helium, and finally, a gaseous outer layer. Saturn has a pale yellow hue due to ammonia crystals in its upper atmosphere. An electrical current within the metallic hydrogen layer is thought to give rise to Saturn's planetary magnetic field, which is weaker than Earth's, but which has a magnetic moment 580 times that of Earth due to Saturn's larger size. Saturn's magnetic field strength is around one-twentieth of Jupiter's. The outer atmosphere is g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
