Ulam design a Nuclear weapon design Two stage thermonuclear weapons staged fusion bomb ... and origins of the Teller Ulam design , the technical concept behind modern thermonuclear weapons , also ... to construct. Ulam s and Teller s contributions Image with inadequate rationale removed Image Stanislaw Ulam.jpg right frame Stanislaw Ulam . The exact history of the Teller Ulam breakthrough ... from the Polish migr mathematician Stanis aw Marcin Ulam Stanis aw Ulam was seized upon by Teller ... of contribution provided respectively from Ulam and Teller to what became known as the Teller Ulam ... with Scientific American from 1999, Teller told the reporter blockquote I contributed Ulam did not. I m sorry I had to answer it in this abrupt way. Ulam was rightly dissatisfied with an old ... without the idea of Ulam. The nuclear weapons designer Ted Taylor Ted Taylor was clear about assigning credit for the basic staging and compression ideas to Ulam, while giving Teller the credit for recognizing ... Bravo shot demonstrated that the Teller Ulam design could be made deployable, but also that final fission stage created large amounts of nuclear fallout . The Teller Ulam breakthrough the details ... before igniting it. Some sources have suggested that Ulam initially proposed compressing the secondary ... the primary and secondary seems to have been exclusively contributed by Ulam. The elegance of the design ... to a near certainty that the concept would work. On November 1, 1952, the Teller Ulam configuration ... to say that Ulam is the father, because he provided the seed, and Teller is the mother, because he ... use. The first deployable Teller Ulam weapon in the U.S. would not be developed until ... Teller Ulam weapons which could outfit Intercontinental Ballistic Missile s and Submarine Launched ... 1970s, when versions of the Teller Ulam design were created which could fit on the end of a small ... bomb design before the Teller Ulam configuration had been completed , none of his espionage information ... more details
See also spiral model , a software development process software development approach . The spiral approach is a technique often used in teaching or textbook s where first the basic facts of a subject are learned, without worrying about details. Then as learning progresses, more and more details are introduced, while at the same time they are related to the basics which are reemphasized many times to help enter them into long term memory . This principle is somewhat similar to the inverted pyramid method used in writing news stories, and the game 20 questions . External links http www.leaningpinesoftware.com spiral.shtml The spiral approach applied to math http www.krl.caltech.edu prezeau TeachPhilo.pdf One teacher s description of how he uses the spiral approach pdf file edu stub Category Pedagogy de Spiralcurriculum no Spiralprinsippet ... more details
Orphan date February 2009 The Spiral Diners are vegan restaurants located in Near Southside, Fort Worth Near Southside Fort Worth , with a second location in Dallas , Texas . The Fort Worth location is currently the city s only vegan restaurant. History Spiral Diner & Bakery was founded in 2002 by Amy McNutt, a vegan and animal rights advocate. McNutt s purpose in starting Spiral Diner was to demonstrate, in addition to its moral significance, that a vegan diet can be satisfying and delicious. The first location for the diner was in the Fort Worth Rail Market, a renovated Santa Fe Railroad building that housed a variety of shops and food vendors as well as a Farmer s Market. During its stay there, the diner developed a large and loyal following. After just two years, a larger facility was needed. In 2004, a 1932 vintage building on Magnolia Avenue was acquired and refurbished. In August 2004, Spiral Diner & Bakery opened at that new location where it remains today. In June 2007 it was announced that Spiral Diner would be opening a second location in Dallas , Texas . Sara Tomerlin, a graduate of Texas Christian University and former Spiral Diner employee, signed a licensing agreement ... of Spiral Diner Fort Worth was sold and transferred to Lindsey Akey, a long time Spiral Diner employee ... on January 1, 2008. Amy McNutt will remain as the owner of the Spiral Diner brand, serving as a consultant . Future plans may include additional Spiral Diner locations in other Texas cities. Recognition The vegetarian magazine VegNews has featured Spiral Diner in their publication several times and nominated ... Veggie Awards 2006 ref Spiral Diner s Fort Worth location was named the magazine s Restaurant of the Year ... Editors picks ref Spiral Diners are listed in the 2011 International Raw Food Restaurant Directory ... of Dallas. References references External links http www.spiraldiner.com Spiral Diner s website http blogs.dallasobserver.com cityofate 2009 02 at oak cliffs spiral diner a v.php At Oak Cliff s Spiral ... more details
Multiple issues orphan April 2012 cleanup September 2010 refimprove September 2010 Merge Colon anatomy date September 2010 The spiral colon is the ascending colon of ruminants. ref citation url http medical dictionary.thefreedictionary.com spiral colon title Medical dictionary ref Caecum receives the solid wastes of digestion from the ileum via the Ileocaecal valve .The spiral colon is responsible for the reabsorption of water and minerals from faecal material ref citation url http faculty.ucc.edu biology potter Pig Digestive System sld009.htm title Spiral colon and caecum ref References Reflist 3.Veterinary Dictionary http www.answers.com topic colon 9 Category Mammal anatomy Category Colon anatomy ... more details
Image Spiral model Boehm, 1988 .svg thumb 333px Spiral model Boehm, 1988 . Software development process The spiral model is a software development process combining elements of both design and prototyping ... up concepts. Also known as the spiral lifecycle model or spiral development , it is a systems development ... of the prototyping and the waterfall model . The spiral model is intended for large, expensive and complicated ... design decisions are made by coders that would cause problems. History The spiral model was defined by Barry Boehm in his 1986 article A Spiral Model of Software Development and Enhancement . ref Boehm B, http doi.acm.org 10.1145 12944.12948 A Spiral Model of Software Development and Enhancement , ACM ... The model The spiral model combines the idea of iterative development prototyping with the systematic ..., or incremental refinement through each time around the spiral. The spiral model also explicitly includes ... 57 ref The spiral model is based on continuous refinement of key products for requirements definition .... ref name Nasa04 The spiral lifecycle model allows for elements of the product to be added in when ... and allows for making an orderly transition to a maintenance activity. Another positive aspect is that the spiral ..., such involvement is helpful. ref name Nasa04 Starting at the center, each turn around the spiral goes ... in multiple places. Final design, implementation, integration, and test occur in iteration 4. The spiral ... can be delivered to the user faster than the waterfall method. The spiral method also helps ... Original research date November 2011 The spiral model is mostly used in large projects. For smaller ... adopted the spiral model for its Future Combat Systems program. The FCS project was canceled after six years 2003 2009 , it had a two year iteration spiral . The FCS should have resulted in three consecutive prototypes one prototype per spiral every two years . It was canceled in May 2009. The spiral ... distributed, interoperable, system of systems. Also it is reasonable to use the spiral model in projects ... more details
image hyperspiral.svg thumb 200px right Hyperbolic spiral for a 2 A hyperbolic spiral is a Transcendental function transcendental plane curve also known as a reciprocal spiral . A hyperbolic spiral is the opposite of an Archimedean spiral and are a type of Cotes spiral . It has the coordinates elementary mathematics Polar coordinates polar equation math r frac a theta math It begins at an infinite distance from the pole in the centre for starting from zero r a starts from infinity , it winds faster and faster around as it approaches the pole, the distance from any point to the pole, following the curve, is infinite. Applying the transformation from the polar coordinate system math x r cos theta, qquad y r sin theta, math leads to the following parametric representation in Cartesian coordinate system Cartesian coordinates math x a cos t over t , qquad y a sin t over t , math where the Parameter Mathematical parameter t is an equivalent of the polar coordinate . The spiral has an asymptote at y a for t approaching zero the ordinate approaches a , while the abscissa grows to infinity math lim t to 0 x a lim t to 0 cos t over t infty, math math lim t to 0 y a lim t to 0 sin t over t a cdot 1 a. math It was Pierre Varignon who studied the curve as first, in 1704. Later Johann Bernoulli and Roger Cotes worked on the curve. Other spirals Archimedean spiral . External links http jsxgraph.uni bayreuth.de wiki index.php Hyperbolic spiral Online exploration using JSXGraph JavaScript Category Spirals Geometry stub bg ca Espiral hiperb lica es Espiral hiperb lica eo Hiperbola spiralo it Spirale iperbolica hu Hiperbolikus spir l nl Hyperbolische spiraal pl Spirala hiperboliczna pt Espiral logar tmica ru sl Hiperboli na spirala ta tr Hiperbolik spiral zh ... more details
Image Spiral house Tokyo.jpg thumb Spiral exterior Spiral is a building by architect Fumihiko Maki in Aoyama, Tokyo , Japan . It was commissioned by lingerie company Wacoal and was completed in 1985. It is a multi use building, with gallery space, multipurpose hall, cafe, restaurant and bar, salon, and shops. The defining feature of the building is a seemingly floating spiral ramp 15m in diameter that encircles the rear gallery space and climbs to the second floor. The exterior facade of aluminum and glass reflects the jumbled nature of the surrounding streetscape. Also known as the Wacoal Art Center, Spiral is a nexus of cultural life in Aoyama, presenting music, art, film, and theater events. Location 5 6 23 Minami Aoyama, Minato, Tokyo Sources cite book first Noriyuki last Tajima title Tokyo A guide to recent architecture year 1996 publisher Ellipsis location London cite web url http www.ellipsis.com guides tokyo introduction tokyo.spiral.html title Ellipsis Guide Tokyo Spiral accessdate 2006 06 18 &ndash web version of print source External links cite web url http www.spiral.co.jp title Spiral web accessdate 2006 06 17 jp icon http www.archiplanet.org wiki Spiral Building Spiral Building at Archiplanet coord 35.66368 N 139.71168 E source placeopedia display title Category Modernist architecture in Japan Category Event venues established in 1985 Category Buildings and structures in Tokyo Category Fumihiko Maki buildings Japan struct stub it Spiral edificio ja ... more details
File Humerus spiral fracture.png thumb alt An x ray image of a spiral fracture to the left humerus An x ray image of a spiral fracture to the left humerus of a 27 year old male. The injury was sustained during a fall. A spiral fracture a.k.a. torsion fracture is a bone fracture occurring when torque is applied along the axis of a bone . ref name harvard cite web title Spiral Fracture url http www.fas.harvard.edu scdiroff lds NewtonianMechanics SpiralFracture SpiralFracture.html publisher Harvard University accessdate 25 November 2010 ref While torsional forces are being applied along the parallel axis of a bone, planes perpendicular to this axis are not affected. Tension physics Tension is exerted upon one part of the bone, while Compression physical compressive forces are exerted upon the other. When these forces have exceeded the limit tolerable by the bone, fracture occurs. ref name harvard References reflist Fractures Med stub Category Bone fractures Category Traumatology de Torsionsbruch ... more details
File Uterine arterial vasculature.svg thumb Uterine arterial vasculature, showing spiral arteries at right. ref cite doi 10.1136 jcp.29.Suppl 10.9 ref Spiral arteries are small arteries which temporarily supply the endometrium of the uterus during the luteal phase of the menstrual cycle . In histology , identifying the presence of these arteries is one of the most useful techniques in identifying the phase of the cycle. The spiral arteries are converted for uteroplacental blood flow during pregnancy, involving Loss of smooth muscle & elastic lamina from the vessel wall. 5 10 fold dilation at the mouth of the vessel. Failure of the physiological conversion of the spiral arteries can cause a number of complications, including intrauterine growth restriction and pre eclampsia . ref cite journal last Burton GJ, Woods AW, Jauniaux E, Kingdom JC title Rheological and physiological consequences of conversion of the maternal spiral arteries for uteroplacental blood flow during human pregnancy pmid 19375795 ref References reflist Arteries of abdomen Category Arteries of the abdomen circulatory stub ... more details
Neopaganism2 For the book by Starhawk, see The Spiral Dance . For the band, see Spiral Dance band . Spiral dance , also called the Grapevine dance and the Weaver s dance, is a Neopagan group dance emphasizing community and rebirth, although it is also used as an effective way to raise power in a ritual. ref cite book last Starhawk title The Spiral Dance publisher HarperCollins edition 20th anniversary year 1999 page 258 isbn 0 06 251632 9 ref Although it originated in the Reclaiming Neopaganism Reclaiming tradition, it has become a more mainstream Neopagan ritual which is especially popular at festivals due to its accommodation of large numbers of people. History The spiral dance is a central ritual dance to Reclaiming Witches. The first spiral dance was performed in Berkeley, CA, and was performed in a ritual intended to meld art, music, ritual and politics as well as to celebrate the publication of The Spiral Dance by Starhawk . ref http www.reclaimingquarterly.org web spiraldance spiral4.html ref It turned into a yearly ritual, although a large portion of the politics were removed for later versions of the ritual and it currently exists as a Samhain celebration to honor the dead and celebrate rebirth. ref http www.reclaiming.org rituals samhain.html ref Performance The spiral dance usually involves a drumming group and a chant or song in addition to the dancers. All members present ... to face with every other dancer. ref cite book last Starhawk title The Spiral Dance publisher ... each other in the dance. ref cite book last Starhawk title The Spiral Dance publisher HarperCollins ... to the rhythm of the dance. ref cite book last Starhawk title The Spiral Dance publisher HarperCollins ... whose duties include, among other things, a one person spiral dance. See also Reclaiming Neopaganism The Spiral Dance References Reflist External links http www.reclaiming.org rituals samhain.html The official Spiral Dance web page Neopaganism DEFAULTSORT Spiral Dance Category Neopaganism ... more details
Use dmy dates date February 2012 Image BethungraSpiral.jpg thumb Tracks diverging at the start of the spiral The Bethungra Spiral is a Spiral railway rail spiral , built on the Main Southern railway line, New South Wales Main South railway line of New South Wales in Australia at Bethungra, New South Wales Bethungra to ease the gradients when the line was duplicated between 1941 and 1946. Bethungra is between Cootamundra, New South Wales Cootamundra and Junee, New South Wales Junee . The original line was graded at 1 in 40 for Sydney bound trains, which imposed a severe limitation on train loads, and also caused congestion as bank engine s were attached. The spiral makes use of local geography in the shape of a convenient hill which the uphill line spirals around. Two short tunnels are required. The spiral increases the distance traveled by uphill trains by about 2 km. Downhill trains continue to use the original line. The ruling grade ruling gradient of the new uphill line is now 1 in 66, compensated for curvature. Normally trains from the south bound for Sydney use the spiral while trains from Sydney to Melbourne use the original steep downhill line. Geography Bethungra lies near the base of a mountain range. Bethungra is at an elevation of approximately 310m. 5km south west of Bethungra, the track is at 280m. The track rises to 320m passing the side of the township of Bethungra. 6km north east of the Bethungra, the track reaches a plateau at 420m. Any new deviation which attempted to remove the spiral and retain the ruling gradient would require major earthworks, over a span longer than 6km. Fast Sydney bound passenger trains may only benefit by reducing their travel time by about 3 minutes, while slower freight trains should save much more time. References Cite AHPI NSW5011929 Bethungra Spiral accessdate 2008 08 13 coord 34.75 147.88 type city region AU NSW format dms display title Category Rail infrastructure in New South Wales ... more details
In physics and in the mathematics of plane curve s, Cotes s spiral also written Cotes spiral and Cotes spiral is a spiral that is typically written in one of three forms math frac 1 r A cos left k theta varepsilon right math math frac 1 r A cosh left k theta varepsilon right math math frac 1 r A theta varepsilon math where r and are the radius and azimuthal angle in a polar coordinate system , respectively, and A , k and are arbitrary real number constants. These spirals are named after Roger Cotes . The first form corresponds to an epispiral , and the second to one of Poinsot s spirals the third form corresponds to a hyperbolic spiral , also known as a reciprocal spiral , which is sometimes not counted as a Cotes s spiral. ref cite book title The sheer joy of celestial mechanics author Nathaniel Grossman publisher Springer year 1996 isbn 9780817638320 page 34 url http books.google.com books?id mms6MXH9CuoC&pg PA34 ref The significance of Cotes s spirals for physics are in the field of classical mechanics . These spirals are the solutions for the motion of a particle moving under a inverse cube central force , e.g., math F r frac mu r 3 math where is any real number constant. A central force is one that depends only on the distance r between the moving particle and a point fixed in space, the center. In this case, the constant k of the spiral can be determined from and the areal velocity of the particle h by the formula math k 2 1 frac mu h 2 math when h sup 2 sup cosine form of the spiral and math k 2 frac mu h 2 1 math when h sup 2 sup hyperbolic cosine form of the spiral . When h sup 2 sup exactly, the particle follows the third form of the spiral math frac 1 r A theta varepsilon. math See also Archimedean spiral Hyperbolic spiral References references Bibliography citations date November 2011 cite book author E. T. Whittaker Whittaker ... author Danby JM date 1988 chapter The Case &fnof r r sup 3 sup Cotes Spiral 4.7 title Fundamentals ... more details
align right Image Logarithmic Spiral Pylab.svg 260px thumb Logarithmic spiral pitch 10 Image NautilusCutawayLogarithmicSpiral.jpg ... logarithmic spiral File Fractal Broccoli.jpg 200px thumb Romanesco broccoli , which grows in a logarithmic spiral Image Mandel zoom 04 seehorse tail.jpg thumb 200px A section of the Mandelbrot set following a logarithmic spiral Image Low pressure system over Iceland.jpg thumb 200px A low pressure area over Iceland shows an approximately logarithmic spiral pattern File Messier51 sRGB.jpg thumb 200px The arms of Spiral galaxy spiral galaxies often have the shape of a logarithmic spiral, here the Whirlpool Galaxy Image Polygon spiral.svg thumb 300px A logarithmic spiral , equiangular spiral or growth spiral is a special kind of spiral curve which often appears in nature. The logarithmic spiral was first described by Ren Descartes Descartes and later extensively investigated by Jacob Bernoulli , who called it Spira mirabilis , the marvelous spiral . Definition In polar coordinates ... cos t , math math y t r t sin t ae bt sin t , math with real number s math a math and math b math . The spiral ... to the parameter math b math . In other words, it controls how tightly and in which direction the spiral spirals. In the extreme case that math b 0 math math textstyle phi frac pi 2 math the spiral ... approaches Extended real number line infinity 0 the spiral tends toward a straight half line. The Complementary ... mirabilis , Latin for miraculous spiral , is another name for the logarithmic spiral. Although ... spiral was given to this curve by Jacob Bernoulli , because he was fascinated by one of its unique mathematical properties the size of the spiral increases but its shape is unaltered with each successive ... heads. Jakob Bernoulli wanted such a spiral engraved on his headstone along with the phrase Eadem mutata resurgo Although changed, I shall arise the same. , but, by error, an Archimedean spiral ... 1952 , Evolutes. p. 206 ref Properties The logarithmic spiral can be distinguished from the Archimedean ... more details
Image Spiral of Theodorus.svg thumb right 400px The spiral of Theodorus up to the triangle with a hypotenuse of 17. In geometry , the spiral of Theodorus also called square root spiral , Einstein spiral or Pythagorean spiral ref name KAHN2 cite arxiv last Hahn first Harry K. title The Ordered Distribution of Natural Numbers on the Square Root Spiral eprint 0712.2184 ref is a spiral composed of contiguous right triangle s. It was first constructed by Theodorus of Cyrene . Construction The spiral is started ... from 3 to 17 are Irrational number irrational by means of the Spiral of Theodorus. ref citation ... Long first Kate title A Lesson on The Root Spiral url http courses.wcupa.edu jkerriga Lessons A 20Lesson ... hypotenuses will ever coincide, regardless of how far the spiral is continued. Also, if the sides ... vertices of the total figure. ref name LONG Extension File Spiral of Theodorus extended.svg thumb The spiral extended to three windings. Theodorus stopped his spiral at the triangle with a hypotenuse of 17. If the spiral continued to infinitely many triangles, many more interesting characteristics lie in the spiral. Growth rate Angle If sub n sub is the angle of the n th triangle or spiral segment ... lim k to infty c 2 k 2.157782996659 ldots. math Image Spiral of Theodorus triangle.svg thumb A triangle or section of spiral Radius The growth of the radius of the spiral at a certain triangle n is math Delta r sqrt n 1 sqrt n . math Archimedean spiral The Spiral of Theodorus approximate s the Archimedean spiral . ref name KAHN2 Just as the distance between two windings of the Archimedean spiral equals mathematical constant pi , as the number of spins of the spiral of Theodorus approaches ..., 13, and 17 on the Square Root Spiral eprint 0801.4422 ref The following is a table showing the distance of two windings of the spiral approaching pi class wikitable Winding No. width 200px Calculated ... the discrete points of the spiral of Theodorus by a smooth curve not merely Piecewise linear ... more details
of the solar wind if the Sun were not rotating . The spiral shape also greatly amplifies the strength of the solar magnetic field in the outer solar system. The spiral shape is similar to the pattern ... feature on the Sun s surface rotates with the solar rotation , making a spiral pattern in space. Unlike ... spiral shape. Image Parker spiral.gif thumb right 300px The Parker Spiral The Parker spiral may be responsible ... spiral shape of the field causes a drag torque on the poles due to the magnetic tension force. During ... more details
For the horror manga Uzumaki Superherobox Wikipedia WikiProject Comics image Image Spiral Marvel character .PNG caption Spiral br Mike McKone, artist comic color background ff8080 character name Spiral ... Mojo powers br Multiple arms Enhanced strength Teleportation Skilled in sorcery Metamorphosis Spiral ... and Art Adams . Fictional character biography Ref improve section date May 2009 Spiral s real name is Rita ... Rita, while a much worse fate was left for her. Becoming Spiral After holding her prisoner for several ..., Mojo sent Spiral back in time to set into motion the events that led to her former self becoming Mojo s prisoner and become Spiral by attacking her past self. Freedom Force Now in the past, Spiral ... point, Spiral encountered Valerie Cooper Val Cooper and was recruited into Freedom Force comics Freedom ... of Mutants . Despite being utterly insane and more blood thirsty than her new teammates, Spiral ... parts to amputees and others who see the power of cybernetic limbs. Most notably, Spiral transformed ... Along with Mojo, Spiral was shown to have played a role in Psylocke s physical appearance changing ... transformed Psylocke s original Caucasian body to a Sinoid one, but it was revealed that Spiral ... Revanche first appeared. Other than malicious intent, Spiral s reasons for doing this if any are still unknown. ref X Men vol. 2 31 32 ref Even though she was a loyal servant of Mojo, Spiral deeply resented Mojo s crass manners and cruelty towards her. In particular, Spiral has been known to go against ... has been known to leave Spiral stranded on Earth since Spiral needs Mojo s power to travel between dimensions safely . Just prior to the events of House of M , Spiral and Mojo attack the X Men during a training session in the Danger Room . Spiral transforms most of the X Men into their X Baby forms, but is unable to do the same to Psylocke due to their connection. Spiral is however able to paralyze ... to use her powers to ensure that Mojo and Spiral will never be able to bother the X Men again, though ... more details
notability date October 2011 Image Spiral pump.JPG thumb right 200px A spiral pump A spiral pump is a low lift pump which is composed of a a long piece of metal plating, which is wound into a coil and sealed at the top and back extremities so as to resemble a cylinder. The outer cavity serves as the inlet, while the inner partial tube serves as the outlet. The outlet pipe is fixed to a engine or animal which is capable of rotating the pump quickly. Due to this rotation, water is picked up by the outer cavity and pumped upwards in the hose. Application The spiral pump, as many low lift pumps, is commonly used for irrigation purposes and for drainage of lands. Advantages The spiral pump is an alternative to the Archimedes screw Archimedean screw . Unlike the Archimedean screw, it can pump while horizontal. The Archimedean screw must be tilted at an angle. The spiral pump, if fitted with a suitable rotating seal, can deliver water to a greater height, typically 5 10m, above their discharge opening. ref http www.fao.org docrep 010 ah810e AH810E06.htm Spiral pump ref Despite the emergence of new pumps that operate on other principles, the spiral pump remains an important tool as it can be built and repaired easily at a very low cost. This is possible as all the components can be built from local resources such as sheet metal bent into the desired form with or without machine tools. Disadvantages As mentioned before, the pump only allows the lifting of water over a small height. Such an inhibiting factor makes it unsuitable for use in water drainage or irrigation situations that require water to be lifted over larger heights. References reflist See also Comparison of pumps Category Pumps Category Appropriate technology ... more details
Orphan date July 2011 unreferenced date April 2011 Dhulghat Spiral is located in Amravati district in state of Maharashtra in India . It is a unique spiral located on Akola Khandwa metre gauge section of South Central Railway of India . It is also called Char Cha Akda in Marathi language Marathi and Char Ka Aankda in Hindi , both meaning Digit of Four due to its shape similar to that of 4 in Devnagari script. Location The spiral is located between Wan Road and Dhulghat stations on Akola Ratlam metre gauge railway line, at around 2 kilometres from Dhulghat station towards Akola . The area is covered by forests and hills through which the Akola Ratlam metre gauge railway line traverses. Structure The spiral consist of a 193 metres long steel viaduct across a shallow valley. Train arrives to this viaduct from Akola . The viaduct leads the track to a circular path around a hill. After circumnavigating the hill, the track arrives nearly parallel to the approach from Akola, but at a significantly lower altitude. This low level track passes below the first of the sixteen bridge girders towards Dhulghat station and Khandwa . The train normally takes around four minutes to complete its journey along the spiral. Historical and Current Usage The spiral was a part of metre gauge line from Ajmer in Rajasthan to Kacheguda in Andhra Pradesh under South Central Railway. Due to the gauge conversions in recent times, the route is now shortened to Akola in Maharashtra to Ratlam in Madhya Pradesh . However, this unique spiral may soon be decommissioned because of the planned gauge conversion of Akola Ratlam section. How to reach The spiral can be approached from Akola which is a railway station on Mumbai Howrah main line and Khandwa which is located on Mumbai Delhi main line via Bhusaval , Itarsi of Indian Railway. coord missing Maharashtra Category Amravati district Category Environment of Maharashtra Category Geography of Maharashtra india stub Maharashtra geo stub ... more details
Taxobox name Spiral hornsnail image status VU status system IUCN2.3 status ref ref Bogan A. E. 1996 . http www.iucnredlist.org search details.php 17698 all Pleurocera brumbyi . http www.iucnredlist.org 2006 IUCN Red List of Threatened Species. Downloaded on 7 August 2007. ref regnum Animal ia phylum Mollusca classis Gastropoda unranked superfamilia clade Caenogastropoda br clade Sorbeoconcha superfamilia Cerithioidea familia Pleuroceridae genus Pleurocera species P. brumbyi binomial Pleurocera brumbyi binomial authority Isaac Lea I. Lea , 1852 synonyms The spiral hornsnail Pleurocera brumbyi is a species of freshwater snail , a gastropod in the Pleuroceridae family. It is Endemism endemic to the United States . References reflist DEFAULTSORT Spiral Hornsnail Category Fauna of the United States Category Pleuroceridae Pleuroceridae stub es Pleurocera brumbyi pt Pleurocera brumbyi vi Spiral hornsnail ... more details
Spiral Optimization is a metaheuristics algorithm developed by Kenichi Tamura and Keiichiro Yasuda. ref name tspiral2011 ref name spiral2011 It was inspired by spiral phenomena in nature. References reflist refs ref name tspiral2011 cite journal last1 Tamura first1 K. last2 Yasuda first2 K. title Primary Study of Spiral Dynamics Inspired Optimization journal IEEJ Transactions on Electrical and Electronic Engineering year 2011 volume 6 issue S1 pages S98&ndash S100 url http onlinelibrary.wiley.com doi 10.1002 tee.20628 abstract doi 10.1002 tee.20628 ref ref name spiral2011 cite journal last1 Tamura first1 K. last2 Yasuda first2 K. title Spiral Dynamics Inspired Optimization journal Journal of Advanced Computational Intelligence and Intelligent Informatics year 2011 volume 15 issue 8 pages 1116&ndash 1122 url http www.fujipress.jp finder xslt.php?mode present&inputfile JACII001500080020.xml ref Category Heuristics algorithm stub ... more details
Image Fermat s spiral.svg frame right Fermat s spiral Fermat s spiral also known as a parabola parabolic spiral follows the equation math r pm theta 1 2 , math in polar coordinates the more general Fermat s spiral follows r sup 2 sup a sup 2 sup &theta . It is a type of Archimedean spiral General Archimedean spiral Archimedean spiral . ref mathworld urlname FermatsSpiral title Fermat Spiral ref In disc phyllotaxis sunflower , daisy , the mesh of spirals occurs in Fibonacci number s because divergence angle of succession in a single spiral arrangement approaches the golden ratio . The shape of the spirals depends on the growth of the elements generated sequentially. In mature disc phyllotaxis , when all the elements are the same size, the shape of the spirals is that of Fermat spirals&mdash ideally. That is because Fermat s spiral traverses equal annulus mathematics annuli in equal turns. The full model proposed by H Vogel in 1979 ref Cite journal last Vogel first H title A better way to construct the sunflower head journal Mathematical Biosciences issue 44 pages 179 189 year 1979 doi 10.1016 0025 5564 79 90080 4 volume 44 postscript None ref is math r c sqrt n , math math theta n times 137.508 circ, math where is the angle, r is the radius or distance from the center, and n is the index number of the floret and c is a constant scaling factor. The angle 137.508 is the golden angle which is approximated by ratios of Fibonacci number s. ref cite book last Prusinkiewicz first Przemyslaw authorlink Przemyslaw Prusinkiewicz coauthors Aristid Lindenmayer Lindenmayer, Aristid title The Algorithmic Beauty of Plants publisher Springer Verlag date 1990 location pages 101&ndash 107 url http algorithmicbotany.org papers webdocs doi isbn 978 0 387 97297 8 ref The Fermat s spiral has also be found to be an efficient layout for the mirrors of concentrated solar ... jsxgraph.uni bayreuth.de wiki index.php Fermat s spiral Online exploration using JSXGraph JavaScript ... more details
Unreferenced date December 2009 image Glass Ear Spirals.jpg thumb right 200px Ear Spirals made out of glass. An ear spiral is a thick spiral that is usually worn through the ear lobe . It is worn in ears that have been stretched. It is normally held in place only by its own downward pressure. Glass ear spirals are shown but many materials are used. Some designs are quite ornate and may include decorative appendages flaring from the underlying concentric pattern. Body piercing Jewellery DEFAULTSORT Spiral Piercing Category Body piercing jewellery Category Ear piercing ... more details
Magellanic spiral galaxies are galaxies which are classified as the type Sm and SAm , SBm , SABm . They are galaxies with one spiral arm , and are named after their prototype, the Large Magellanic Cloud , an SBm galaxy. Magellanic spirals SAm galaxies are a type of unbarred spiral galaxy , while SBm are a type of barred spiral galaxy . ref Linda S. Sparke , John Sill Gallagher , Galaxies in the Universe An Introduction , 2ed., Cambridge University Press , 2007 , ISBN 9780521855938 ref SABm are a type of intermediate spiral galaxy . Type Sm and Im galaxies have also been categorized as irregular galaxies with some structure type Irr 1 . Sm galaxies are typically disrupted and asymmetric. ref citeBase http www.citebase.org abstract?id oai arXiv.org astro ph 0409209 Neutral Hydrogen in the Interacting Magellanic Spirals NGC 4618 4625 Stephanie J. Bush Eric M. Wilcots accessed 1 March 2009 ref dSm galaxies are dwarf spiral galaxy dwarf spiral galaxies or dwarf galaxy dwarf irregular galaxies , depending on categorization scheme. The Magellanic spiral classification was introduced by Gerard de Vaucouleurs , along with Magellanic irregular Im , when he revamped the Hubble classification of galaxies. Grades Expand section date April 2010 Magellanic Spiral Galaxies class wikitable style text align center border collapse collapse cellpadding 2 Magellanic Spirals style background efefef Example style background efefef Galaxy morphological classification Type style background efefef Image style background efefef Information style background efefef Notes SAdm SAm SABdm SABm SBdm SBm Sdm Sm class wikitable style text align center border collapse collapse cellpadding 2 Dwarf Magellanic ......208.1404E Recent Star and Cluster Formation in the Nearby Magellanic Spiral NGC 1311 American ... classification Galaxy Use dmy dates date January 2011 DEFAULTSORT Magellanic Spiral Category Spiral galaxies Category Irregular galaxies Category Galaxy morphological types galaxy stub fr ... more details
Infobox Company company name Spiral Universe company logo File Spiral Universe logo.jpg company type Privately held company Privately held company slogan foundation 2007 key people Reuben Kerben , Andrei Volgin location White Plains, New York num employees industry Educational software products Spiral school management platform revenue Not disclosed homepage http www.spiraluniverse.com www.spiraluniverse.com Spiral Universe provides a software platform for student information system student information , learning management system learning management , and E learning distance learning applications. The company is based in White Plains, New York . The flagship product is called Spiral , an Ajax programming Ajax desktop environment rich Internet application also known as a webtop hosted by the company and available for free under the web portal or software as a service model of charging for support and services. ref name extjs cite web url http www.extjs.com blog 2010 01 05 implementation spotlight spiral universe title Implementation Spotlight Spiral Universe first Darrell last Meyer date ... Business Journal ref File Spiralscreenshot.jpg thumb left Screenshot of Spiral webtop The system ... releases 2010 02 prweb3562794.htm title Spiral Universe School Management Platform Now Available ..., including Uganda . ref cite web url http www.businesswire.com news home 20100208005359 en Spiral Universe Brings Advanced Education Technology Uganda title Spiral Universe Brings Advanced Education ... wptimes.com local news.php?viewspecific 1&storyid 2787 title Spiral Universe A Bit of Silicon Valley Comes to White Plains date 28 March 2010 work The White Plains Times ref Spiral runs on Linux , PostgreSQL ... technology Spiral Universe Technology ref The software is compatible with the Schools Interoperability ... 45668 Spiral 20School 20Management 20System Spiral 20Universe?id 27040707 Capterra Software Spotlight Spiral Universe ref JasperReports JasperSoft is used as a tool for reporting. ref cite web url ... more details
Infobox ESC entry song flagicon Norway Spiral image caption year 1964 country Norway artist Arne Bendiksen as with language Norwegian languages composer Sigurd Jansen lyricist Egil Hagen conductor Karsten Andersen place 8th points 6 lyrics http www.diggiloo.net ?1964no from Diggiloo Thrush prev Solvherv prev link Solvherv next Karusell next link Karusell Spiral was the Norway Norwegian entry in the Eurovision Song Contest 1964 , performed in Norwegian language Norwegian by Arne Bendiksen . This was the first occasion on which Norway had been represented by a male vocalist. The song deals with Bendiksen s feelings of goodwill toward the world. He expresses these feelings through a series of largely unconnected descriptions of what he is doing while my thoughts spiral . He makes reference to the fact that his thoughts are scattered, but dismisses the importance of this realisation as it spoils his happiness. The song was performed third on the night, following the Netherlands Anneke Gr nloh with Jij bent mijn leven and preceding Denmark s Bj rn Tidmand with Sangen om dig . At the close of voting, it had received 6 points, placing 8th in a field of 16. It was succeeded as Norway in the Eurovision Song Contest Norwegian representative at the Eurovision Song Contest 1965 1965 Contest by Kirsti Sparboe with Karusell . Eurovision Song Contest 1964 norway stub Category Eurovision songs of Norway Category Eurovision songs of 1964 no Spiral sang pt Spiral can o ... more details
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