PseudoArchimedes is a name given to an unknown source quoted by various sources of the Islamic Golden Age such as Al Jazari as a reference for the construction of water clock s. ref Gerhard Dohrn van Rossum, http books.google.com books?id xYhlNoUu toC&pg PA73&lpg PA73&dq 22pseudo archimedes 22&source web&ots o0RDFCtCng&sig gnMfkujA C6Nj04obUhHTtGwqo PPA73,M1 History of the Hour Clocks and Modern Temporal Orders ref Archimedes himself is not known to have written any such manuscript. The only surviving manuscript from a PseudoArchimedes is an Arabic language Arabic treatise not listed among Archimedes works. Donald Routledge Hill is of the opinion that the original manuscript may have been Greek language Greek but that most of the manuscript was written by later Arabic authors. The manuscript is referred to by the Arabic engineers Ridwan and Al Jazari. ref Ahmad Y Hassan , http www.history science technology.com Articles articles 206.htm Al Jazari and the History of the Water Clock ref References reflist AncientGreece writer stub Category Water clocks Category Year of birth unknown Category Year of death unknown Category Ancient Greek engineers ... more details
Methods of computing square roots PseudoArchimedes Salinon Steam cannon Syracusia Vitruvius ...other uses pp semi protected small yes pp move indef Infobox scientist name Archimedes of Syracuse br Greek image Domenico Fetti Archimedes 1620.jpg caption Archimedes Thoughtful by Domenico ... , engineering , astronomy , invention known for Buoyancy Archimedes principle , Archimedes screw , Fluid statics hydrostatics , lever s, Archimedes use of infinitesimals infinitesimals Archimedes of Syracuse ... siege engines and the Archimedes screw screw pump that bears his name. Modern experiments have tested claims that Archimedes designed machines capable of lifting attacking ships out of the water and setting ships on fire using an array of mirrors. ref name death ray Archimedes is generally considered ... Archimedes of Syracuse ca. 287 212 BC , the most original and profound mathematician of antiquity. ref ref cite web url http www history.mcs.st and.ac.uk Biographies Archimedes.html title Archimedes ... of calculus.html month February year 1996 accessdate 2007 08 07 ref He also defined the Archimedes ... and an ingenious system for expressing very large numbers. Archimedes died during the Siege of Syracuse ... orders that he should not be harmed. Cicero describes visiting the tomb of Archimedes, which was surmounted by a sphere inscribe d within a cylinder geometry cylinder . Archimedes had proven that the sphere ... writings of Archimedes were little known in antiquity. Mathematicians from Alexandria ... of Miletus , while commentaries on the works of Archimedes written by Eutocius of Ascalon Eutocius ... copies of Archimedes written work that survived through the Middle Ages were an influential source of ideas for scientists during the Renaissance , ref cite web title Galileo, Archimedes, and Renaissance ... accessdate 2007 08 07 ref while the discovery in 1906 of previously unknown works by Archimedes in the Archimedes Palimpsest has provided new insights into how he obtained mathematical results. ref ... more details
wiktionary pseudo For the novel with the original title Pseudo Hocus Bogus The prefix pseudo from Greek lying, false is used to mark something as falsity false , fraud ulent, or pretending to be something it is not. Biology prefix In biology and botany taxonomy the prefix pseudo or pseud can indicate a species with a visual similarity to another genus . An example is the Iris species Iris pseudacorus , by having leaves similar to those of Acorus calamus in the Acorus genus, having pseud acorus false acorus in its botanical name . See also lookfrom pseudo Falsehood Pseudorealism Deception Mimicry Pseudo.com Pseudo Blood of Our Own Category Prefixes Category Greek loanwords Category Biology prefixes and suffixes da Pseudo nl Pseudo sk Pseudo ... more details
Archimedes was a celebrated mathematician and engineer of ancient Greece. Archimedes may also refer to Archim de band , a French rock band Archimedes crater , a lunar crater Archimedes CAD , an open source computer aided design project Archimedes, Inc. , a healthcare modeling company Acorn Archimedes , a home computer Archimedes, Merlin s owl in Disney s The Sword in the Stone film The Sword in the Stone , voiced by Junius Matthews Archimedes number , a dimensionless number used in fluid dynamics Archimedes Plutonium, a Usenet celebrity Archimedes bryozoan , an extinct genus of fenestrate Bryozoan See also Archimedean property Archimedean solid Archimedean spiral Archimedes Palimpsest Archimedes screw Archimede disambiguation disambig da Arkimedes flertydig es Arqu medes desambiguaci n fr Archim de homonymie hu Archimedes egy rtelm s t lap it Archimede disambigua ru ... more details
Unreferenced stub auto yes date December 2009 3600 Archimedes is a small asteroid belt main belt asteroid , belonging to the Rafita family . It was discovered by Lyudmila Vasil evna Zhuravleva in 1978 . It is named after Archimedes , the ancient Greece Greek scientist . Archimedes was also a famous mathematician who proved that the ratio of a circle s perimeter to its diameter is the same as the ratio of the circle s area to the square of the radius we nowadays call this ratio pi . MinorPlanets Navigator 3599 Basov 3601 Velikhov MinorPlanets Footer DEFAULTSORT Archimedes Category Rafita asteroids Category Asteroids named for people Category Discoveries by Lyudmila Zhuravlyova Category Astronomical objects discovered in 1978 Category Main Belt asteroids Beltasteroid stub cs Archimedes planetka eo 3600 Arkimedo fa it 3600 Archimedes la 3600 Archimedes hu 3600 Archimedes pl 3600 Archimedes pt 3600 Archimedes sk 3600 Archimedes sr 3600 Archimedes uk 3600 vi 3600 Archimedes yo 3600 Archimedes ... more details
Unreferenced date October 2009 Infobox mountain name Montes Archimedes photo photo caption elevation listing List of mountains on the Moon Lunar mountains location the Moon coordinates Lunar coords and quad cat 25.3 N 4.6 W type age Montes Archimedes is a mountain range on the Moon . It is named after the crater Archimedes crater Archimedes that lies to the north, which in turn has an eponym of the Ancient Greece Greek mathematician Archimedes . This group of mountains is located on a plateau in the eastern part of the Mare Imbrium , a lunar mare in the northwest quadrant of the Moon s near side. They are bounded on the eastern side by the Palus Putredinis , a small mare, and to the north by Archimedes. Farther to the south and east lies the impressive Montes Apenninus , a long mountain range. The selenographic coordinate s of this range is 25.3 N, 4.6 W. The peaks of Montes Archimedes occupy an area with a maximum diameter of 163 km, although the most rugged portion of the terrain is concentrated within the central 70 km. The remainder of the peaks are scattered across the plateau, with no particular structure or pattern. Some of the peaks in this range achieve heights of up to 2.0 km, much less than those in the Montes Apenninus, for example, and none have received specific designations. Category Mountains on the Moon Archimedes, Montes Moon stub de Montes Archimedes fr Montes Archimedes lb Montes Archimedes pl Montes Archimedes ru sv Montes Archimedes ... more details
Archimedes Geo3D is a software package for dynamic geometry in three dimensions. It was released in Germany in March 2006 and won a German government award for outstanding educational software in 2007 http www.digita.de 2007 foerder.htm . Image ParaboloidWithShadow.png thumb A locus surface constructed with Archimedes Geo3D Basic features Archimedes Geo3D allows the construction of points, lines, planes, spheres, triangles, circles and their intersections. Objects can be moved and the construction changes accordingly. Advanced features Archimedes Geo3D can trace the movement of points, lines, segments, and circles and generate locus lines and surfaces. Arbitrary objects can be intersected with lines, locus lines, and planes. References cite web last first title digita F rderpreis Archimedes Geo3D url http www.digita.de 2007 foerder.htm accessdate 2007 11 08 cite journal authorlink Andreas Goebel title Dynamische Raumgeometrie journal mathematik lehren volume 144 pages 60 date October 2007 External links http www.raumgeometrie.de drupal en Archimedes Geo3D home page http vimeo.com 6933934 Building a projection in Archimedes Geo3D http vimeo.com 6933261 Building a double cone in Archimedes Geo3D Category Interactive geometry software ... more details
Taxobox image Arhimedes3d.jpg image caption Fossilized skeleton of Archimedes Bryozoan. regnum Animal ia phylum Bryozoa classis Stenolaemata ordo Fenestrida familia Fenestellidae genus Archimedes ref Col, Jeananda, http www.enchantedlearning.com subjects dinosaurs glossary indexa5.shtml Archimedes , Dinosaur and Paleontology Dictionary , 1996, accessed March 8, 2011 ref Archimedes , named for the Archimedes Screw , is a genus of Bryozoan known in the rock record from the Carboniferous to the Permian periods, when it became extinct. The first use of the term Archimedes in relation to this genus was in 1838. ref Helen M. Duncan Duncan, Helen M. and W.H. Easton. http www.jstor.org stable 1300075 Archimedes and its Genotype. Journal of Paleontology . SEPM Society for Sedimentary Geology. Vol. 27, No. 5 Sep., 1953 , pp. 737 741. ref The majority of these fossils are distributed throughout Europe and North America. The live creature had a delicate calcareous lattice structure ref Arduini, Paolo. Simon & Schuster s Guide to Fosils , 1986, p.33 ref representative of fenestrate growth forms, but in most fossils these latices have been destroyed, leaving only the spiral backbone. Notes Reflist Category Bryozoans Bryozoan stub Paleo stub hu Archimedes llatnem ... more details
distinguish Archimedes CAD Infobox software name GNU Archimedes logo developer Jean Michel Sellier frequently updated no operating system GNU Linux , UNIX genre Technology CAD TCAD license GNU General Public License GPL free software website http www.gnu.org software archimedes www.gnu.org software archimedes inline date April 2012 refimprove date April 2012 Archimedes is a Technology CAD TCAD package for use by engineers to design and simulate submicron and mesoscopic semiconductor devices. Archimedes is GNU Free Documentation License free software and thus it can be copied, modified and redistributed under GNU Public License GPL . Archimedes uses the Monte Carlo Ensemble Monte Carlo method and is able to simulate physics effects and transport for electrons and heavy holes in Silicon, Germanium, GaAs, InSb, AlSb, AlAs , AlxInxSb, AlxIn 1 x Sb, AlP, AlSb, GaP, GaSb, InP and their compounds III V semiconductor materials , along with Silicon Oxide. Applied and or self consistent electrostatic and magnetic fields are handled with the Poisson s Equation Poisson and Faraday equations. computer stub Category GNU Project software Category Computer aided engineering software fr GNU Archimedes ... more details
lunar crater data image Image AS15 M 1542.jpg 200px caption Archimedes from Apollo 15 . NASA photo . latitude 29.7 N or S N longitude 4.0 E or W W diameter 83 km depth 2.1 km colong 4 eponym ArchimedesArchimedes is a large moon lunar impact crater on the eastern edges of the Mare Imbrium . To the south of the crater extends the Montes Archimedes mountainous region. On the southeastern rim is the Palus Putredinis flooded plain, containing a system of rille s named the Rimae Archimedes that extend over 150 kilometers. North northwest of Archimedes stand the Montes Spitzbergen , a string of peaks in the Mare Imbrium . East of Archimedes is the crater Autolycus crater Autolycus , and the stretch ... . This was the first craft to reach the surface of the Moon, landing September 13, 1959. Northeast of Archimedes is the prominent crater Aristillus crater Aristillus . The lava plain between Archimedes ... from Archimedes toward the north northwest, crossing this Lunar mare mare . The diameter of Archimedes .... Illustrations Image Moon.Archimedes.jpg left thumb 200px Lunar crater Archimedes in the infrared. Image ... Imbrium s features. Archimedes is the feature marked G . br clear all Satellite craters By convention ... mid point that is closest to Archimedes. class wikitable style text align center width 25 style background eeeeee Archimedes width 25 style background eeeeee Latitude width 25 style background eeeeee ... Union IAU . Archimedes A See Bancroft crater . Archimedes F See MacMillan crater . Archimedes K See Spurr crater . References Lunar crater references External links cite web title Featured Image Archimedes ... 03 18 DEFAULTSORT Archimedes Crater Category Impact craters on the Moon cs Kr ter Archimedes da Archimedes m nekrater de Archimedes Mondkrater es Archimides cr ter lunar fa fr Archimedes crat re it Archimedes cratere nl Archimedes inslagkrater pl Archimedes krater ksi ycowy ru sk Archimedes kr ter fi Arkhimedes Kuun kraatteri sv Archimedes m nkrater ... more details
Refimprove date August 2010 Infobox software name Archimedes The Open CAD logo Image Archimedeslogo.png 100px center Logo of Archimedes caption the Archimedes Logo screenshot Image ArchimedesScreenShot.png 300px center Screenshot of Archimedes User Interface caption Archimedes User Interface developer Archimedes Project, University of S o Paulo latest release version 0.64.2 latest release date July 29, 2010 operating system Linux , Windows, Mac OS and any platforms supporting Java programming language Java and OpenGL . platform Java software platform Java genre Architectural computer aided design license Eclipse Public License EPL website url http www.archimedes.org.br Portal Free software Archimedes The Open CAD aka Arquimedes is a computer aided design CAD program being developed with direct input from architects and architecture firms. With this design philosophy, the developers hope to create software better suited for architecture than the currently widely used AutoCAD , and other available CAD software. ref http archimedes.incubadora.fapesp.br portal project archimedes project Archimedes Project ref The program is free software released under the Eclipse Public License . Features ... export English, Portuguese, and Italian language support Integration with other CAD Systems Archimedes ... needed date July 2008 Development Archimedes is written in Java programming language Java , and the latest ... machine on version 1.5.0 or later. History The Archimedes Project started as a collaboration between ... leader but everyone is free to contribute with plugins and or patches. Timeline Archimedes was registered ... Archimedes Home Page http sourceforge.net projects arquimedes Archimedes on SourceForge.net http codeache.blogspot.com Hugo Corbucci s Blog Archimedes Project Lead https incubadora.fapesp.br svn archimedes SVN Repository References Reflist DEFAULTSORT Archimedes Cad Category Free computer aided design ... CAD software stub es Archimedes it Archimedes nl Archimedes Cad ... more details
Refimprove date December 2009 An Archimedes number math mathrm Ar math not to be confused with Archimedes constant , pi , named after the ancient Greek scientist Archimedes used to determine the motion of fluid s due to density differences is a dimensionless number in the form math rm Ar frac g L 3 rho ell rho rho ell mu 2 math where g gravitational acceleration 9.81 m s , sub l sub density of the fluid, math kg m 3 math density of the body, math kg m 3 math math mu math dynamic viscosity, math kg m s math L characteristic length of body, m When analyzing potentially mixed convection of a liquid, the Archimedes number parametrizes the relative strength of free and forced convection by representing the ratio of Grashof number and the square of Reynolds number . This represents the ratio of buoyancy and inertial forces, which stands in for the contribution of natural convection. When Ar 1, natural convection dominates and when Ar 1, forced convection dominates. math Ar frac Gr Re 2 math ref cite book author Frank P. Incropera Incropera, F. P. title Fundamentals of Heat and Mass Transfer, 5th Ed. publisher Wiley year 2001 id ISBN 978 0471386506 ref See also Fluid dynamics Convective heat transfer References references NonDimFluMech DEFAULTSORT Archimedes Number Category Dimensionless numbers of fluid mechanics Category Fluid dynamics Category Archimedes number Fluiddynamics stub ar be bg bs Arhimedov broj ca Nombre d Arquimedes de Archimedes Zahl es N mero de Arqu medes eo Arkimeda nombro fa fr Nombre d Archim de hi it Numero di Archimede nl Getal van Archimedes km pl Liczba Archimedesa ru sr zh ... more details
The mission of the Archimedes Movement is to create a new space for civic engagement outside our traditional legislative and governance structures to advance solutions to the common problems we face starting with the crisis in the U.S. health care system. ref http wecandobetter.org ref This grassroots advocacy organization was founded by former Oregon governor John Kitzhaber , M.D. in January 2006. ref http www.wecandobetter.org what we seek to do ref The Archimedes Movement is a member of the Oregon Health Reform Collaborative. ref http www.oregonhealthreform.org dead link date April 2012 ref Notes and references Reflist External links http wecandobetter.org The Archimedes Movement Category Healthcare reform advocacy groups in the United States US org stub ... more details
File Parigi griffe.jpg thumb A painting of the Claw of Archimedes by Giulio Parigi , taking the name iron hand literally The Claw lang el lang grc , harp g , snatcher of Archimedes also known as the iron hand was an ancient weapon devised by Archimedes to defend the seaward portion of Syracuse, Italy Syracuse s city wall against amphibious assault . Although its exact nature is unclear, the accounts of ancient historians seem to describe it as a sort of crane machine crane equipped with a grappling hook that was able to lift attacking ships partly out of the water, then either cause the ship to capsize or suddenly drop it. These machines featured prominently during the Second Punic War in 214 BC , when the Roman Republic Siege of Syracuse 214 212 BC attacked Syracuse with a fleet of at least 120 Quinquereme s under Marcus Claudius Marcellus . When the Roman fleet approached the city walls under cover of darkness, the machines were deployed, sinking many ships and throwing the attack into confusion. Historians such as Polybius and Livy attributed heavy Roman losses to these machines, together with catapult s also devised by Archimedes. The plausibility of this invention was tested in 1999 in the BBC series Secrets of the Ancients and again in early 2005 in the Discovery Channel series Superweapons of the Ancient World . The producers of Superweapons brought together a group ... about Archimedes. Within seven days they were able to test their creation, and they did succeed ... https www.math.nyu.edu crorres Archimedes Claw harris rorres harris.pdf A Formidable War Machine Construction and Operation of Archimedes Iron Hand , Symposium on Extraordinary Machines and Structures in Antiquity , Olympia, Greece, August 19 24, 2001, pp.1 18 C. K. Young Archimedes s iron hand ... External links http www.math.nyu.edu crorres Archimedes Claw models.html Scale models of the Claw s operation ... Category Ancient weapons Category Archimedes es Garra de Arqu medes hy ko it Artiglio ... more details
Image Archimedes Quadruplets.svg thumb right 400px Each of the Archimedes quadruplets green have equal area to each other and to Archimedes twin circles In geometry , Archimedes quadruplets are four Congruence geometry congruent circle s associated with an arbelos . Introduced by Frank Power in the summer of 1998, each have the same area as Archimedes twin circles , making them Archimedean circle s. ref citation last Power first Frank title Forum Geometricorum volume 5 chapter Some More Archimedean Circles in the Arbelos date 2005 publication date 2005 11 02 editor last Yiu editor first Paul pages 133 134 isbn 1534 1178 url http forumgeom.fau.edu FG2005volume5 FG200517.ps accessdate 2008 04 13 ref Construction An arbelos is formed from three collinear points A , B , and C , by the three semicircle s with diameter s AB , AC , and BC . Let the two smaller circles have radii r sub 1 sub and r sub 2 sub , from which it follows that the larger semicircle has radius r r sub 1 sub r sub 2 sub . Let the points D and E be the centre geometry center and midpoint , respectively, of the semicircle with the radius r sub 1 sub . Let H be the midpoint of line AC . Then two of the four quadruplet circles are tangent to line HE at the point E , and are also tangent to the outer semicircle. The other two quadruplet circles are formed in a symmetric way from the semicircle with radius r sub 2 sub . Proof of congruency According to Proposition 5 of Archimedes Book of Lemmas , the common radius of Archimedes twin circles is math frac r 1 cdot r 2 r . math By the Pythagorean theorem math left HE right 2 left r 1 right 2 left r 2 right 2. math Then, create two circles with centers J sub i sub perpendicular to HE , tangent to the large semicircle at point L sub i sub , tangent to point E , and with equal ... 2 r 1 r 2 frac r 1 cdot r 2 r math Proving that each of the Archimedes quadruplets areas is equal to each of Archimedes twin circles areas. ref citeweb last Bogomolny first Alexander title Archimedes ... more details
Archimedes principle relates buoyancy to displacement fluid displacement . It is named after its discoverer, ArchimedesArchimedes of Syracuse . ref name acottLaw Cite journal author Acott, Chris title The diving Law ers A brief resume of their lives. journal South Pacific Underwater Medicine Society journal volume 29 issue 1 year 1999 issn 0813 1988 oclc 16986801 url http archive.rubicon foundation.org 5990 accessdate 2009 06 13 ref Principle Archimedes treatise On floating bodies , proposition 5, states that Bquote Any floating object displaces its own weight of fluid. x x Archimedes of Syracuse, Sicily Syracuse ref name archimedes Cite web url http www.archive.org stream worksofarchimede00arch page 256 mode 2up title The Works of Archimedes page 257 accessdate 11 March 2010 quote Any solid lighter than a fluid will, if placed in the fluid, be so far immersed that the weight of the solid will be equal to the weight of the fluid displaced. ref For more general objects, floating and sunken, and in gases as well as liquids i.e. a fluid , Archimedes principle may be stated thus in terms ... to the weight of the fluid displaced by the object. x x Archimedes of Syracuse, Sicily Syracuse with the clarifications .... In short, buoyancy weight of displaced fluid. Refinements Archimedes principle does not consider ... it is to pull it out of the water. Assuming Archimedes principle to be reformulated as follows, math ... weights and thus forces are equal. See also Buoyancy Eureka word Eureka , reportedly exclaimed by Archimedes ... object References Reflist Category Fluid dynamics Category Archimedes Category Introductory physics ... ka kk sw Kanuni ya Archimedes lv Arhim da sp ks lt Archimedo d snis hu Arkhim d sz t rv nye nl Wet van Archimedes ja no Arkimedes prinsipp nn Arkimedes lova ... Archimedes principle sk Archimedov z kon sl Arhimedov zakon sr sv Arkimedes princip ... Archimedes wo Dalu Archiede zh ... more details
Infobox Film name El Principio de Arqu medes image PrincipiodeArqu medes.jpg director Gerardo Herrero producer Gerardo Herrero, br Josean G mez writer Bel n Gopegui starring Marta Belaustegui br Roberto Enr quez br Blanca Oteyza cinematography Alfredo F. Mayo music Lucio Godoy distributor released runtime 100 minutes country film Spain language Spanish The Archimedes Principle lang es El Principio de Arqu medes is a 2004 film directed by Gerardo Herrero featuring Marta Belaustegui and Roberto Enr quez . External links imdb title id 0403426 title The Archimedes Principle . DEFAULTSORT Archimedes Principle Category 2004 films Category 2000s drama films Category Spanish films Category Spanish language films Category Films directed by Gerardo Herrero 2000s drama film stub Spain film stub ... more details
Refimprove date September 2007 stack File Archimedes screw one screw threads with ball 3D view animated small.gif thumb Archimedes screw was operated by hand and could raise water efficiently File Arkimedes skruv i Huseby.JPG thumb An Archimedes screw in Huseby south of V xj Sweden File Archimedes screw.JPG thumb Archimedes screw File Archscrew.jpg thumb Roman screw used to dewater mines in Spain File IMG 1729 Gemaal met schroef van Archimedes bij Kinderdijk.JPG thumb Modern Archimedes screws which ... The Archimedes screw , also called the Archimedean screw or screwpump , is a machine historically pump ... is commonly attributed to Archimedes on the occasion of his visit to Egypt , but this tradition may ... by unknown Ancient Greece Greek engineers. ref harvnb Oleson 2000 pp 242 251 ref Design The Archimedes ... water. An Archimedes screw was used by British soils engineer John Burland in the successful 2001 stabilization .... Archimedes screws are used in sewage treatment plants because they cope well with varying rates ... an Archimedes screw. The principle is also found in pescalators, which are Archimedes screws .... History The invention of the water screw is credited to the Greek polymath Archimedes of Syracuse ... Dalley and John Peter Oleson January 2003 . Sennacherib, Archimedes, and the Water Screw The Context ... ref The German engineer Konrad Kyeser , in his Bellifortis 1405 , equips the Archimedes screw with a crank .... ref harvnb White, Jr. 1962 pp 105, 111, 168 ref Variants File M hdrescher Schnecke.jpg thumb An Archimedes screw seen on a combine harvester main Screw conveyor A screw conveyor is an Archimedes screw ... feeder to deliver a measured rate or quantity of material into a process. A variant of the Archimedes ... the rotary screw air compressor. On a much larger scale, Archimedes screws of decreasing pitch are used ... of an Archimedes screw, it will force the screw to rotate. The rotating shaft can then be used to drive ... Archimedes Machine Screw propelled vehicle SS Archimedes SS Archimedes the first steamship driven by a screw ... more details
File Archimedes Trammel.gif right thumb Trammel of Archimedes. A trammel of Archimedes is a mechanism that traces out an ellipse . ref cite book title The Words of Mathematics last Schwartzman first Steven year 1996 publisher The Mathematical Association of America isbn 0883855119 Google books SRw4PevE4zUC restricted online copy page 223 ref It consists of two shuttles which are confined Wikt trammel trammelled to perpendicular channels or rails, and a rod which is attached to the shuttles by pivots at fixed positions along the rod. As the shuttles move back and forth, each along its channel, the end of the rod moves in an elliptical path. The semi axes a and b of the ellipse are the distances between the end of the rod and the two pivots. An ellipsograph is a trammel of Archimedes intended to draw, cut, or machine ellipses, e.g. in wood or other sheet materials. An ellipsograph has the appropriate instrument pencil, knife, wood router router , etc. attached to the rod. Usually the distances a and b are adjustable, so that the size and shape of the ellipse can be varied. The history of such ellipsographs is not certain but they are believed to date back to Proclus and perhaps even to the time of Archimedes . ref name AMM File Trammel of Archimedes Small White.gif right thumb An animation of a Trammel of Archimedes in action. Wooden versions of the trammel of Archimedes have been produced also as toy s or novelty item s, and sold under the name of nothing grinders or do nothing machines . In these toys the drafting instrument is replaced by a Crank mechanism crank handle, and the position of the sliding shuttles is usually fixed. Mathematics File Archimedes Trammel Diagram.png left 320px thumb Diagram Let C be the end of the rod, and A , B be the pivots of the sliders. Let ... position. Oblique trammel The trammel of Archimedes is a special case of the more general oblique ... web.mat.bham.ac.uk C.J.Sangwin Publications WonkyTrammel.pdf Wonky Trammel of Archimedes An exploration ... more details
infobox computer Photo Image Arch computer.jpg frameless Archimedes 400 series computer note the standard ... red Logo File Archimedes logo full.png 200px Type Personal computer or Home computer Released June ... MB OS RISC OS or RISC iX The Acorn Archimedes was Acorn Computers Ltd s first general purpose ... processing unit CPU , at its launch in June 1987, the Archimedes was stated as running at 4 Million ... architecture, even where Acorn did not include Archimedes in the official name. Description and history ..., above the function keys on the Archimedes 300 series and A3000 keyboards The first models ... video digitiser boards to be connected directly into the Archimedes. ref The 300 and 400 ... from the 4096 colour palette. ref http retro treasures.blogspot.com 2009 04 acorn archimedes a3000.html Retro Treasures Acorn Archimedes A3000 Bot generated title ref ref http www.drobe.co.uk reference early datasheets RISC OS News, Software and Information Bot generated title ref File Acorn Archimedes ... 600 pixels. It was the first Archimedes to feature a High Density capable floppy disc drive as standard ... A7000 , despite its name being reminiscent of the Archimedes naming conventions, was actually more similar to the Risc PC , the line of RISC OS computers that succeeded the Archimedes in 1994. It lacked ... style text align left width 200px Notes BBC Archimedes 305 style text align center 512 KB 512 kilobyte ... text align center 899 style text align left BBC Archimedes 310 style text align center 1 MB 1 ... style text align center 999 style text align left BBC Archimedes 310M style text align center 1 MB style ... center Unknown style text align left Includes PC emulation software Acorn Archimedes 410 style text ... 1987 style text align center 1299 style text align left Acorn Archimedes 440 style text align center ... center 799 style text align left This model was the last ever BBC Microcomputer Acorn Archimedes ... Improved MEMC1A memory controller over previous 410 model Acorn Archimedes 420 1 style text align ... more details
The Archimedes paradox , named after Archimedes of Syracuse, states that an object can float in a quantity of water that has less volume than the object itself, if its average density is less than that of water. The implication of this is that a large, massive object can float in a relatively small volume of liquid, provided that it is surrounded by it. One extreme application of the paradox is that a battleship can float in a few buckets of water, provided that the water surrounds the hull completely and that the ship would have floated had it been in open water. Origin Archimedes principle also referred to as the Law of Buoyancy states that The buoyant force is equal to the weight of the displaced fluid. In the case of a ship, the upward force exerted on it is equal to the weight of water of equal volume to the part of the ship that is submerged. If this upward force is greater than the weight of the ship, then the ship will float. The Archimedes Paradox implies that if a mould of the hull of ship is made and a relatively small amount of water is placed in the mould, then the ship would float on the thin layer of water between itself and the mould, even though the total volume of water is much less than the volume of the ship. Explanation The paradox originates from the fact that the volume of the immersed part of the object is important, not the actual volume of water that is displaced by it. In other words, no fluid needs to be actually displaced for Archimedes principle to take effect. The object merely needs to be surrounded by the fluid. Commented out because image was deleted Image ArchimedesParadox2.jpg thumb Visualising Archimedes Paradox One method offered to visualize the solution to the paradox is to conduct a simple thought experiment. Commented out because image was deleted Imagine the situation depicted in the image on the right, but instead Instead of a ship ... Activities buoy Archimedes.html title Buoyancy Archimedes Principle accessdate 2006 11 26 div ... more details
Image Stomachion.JPG thumb right Stomachion is a dissection puzzle in the Archimedes Palimpsest shown ... The Archimedes Palimpsest is a palimpsest ancient overwritten manuscript on parchment ... century copy of an otherwise unknown work of the ancient mathematician , physicist , and engineer Archimedes ... text. The manuscript currently belongs to an American private collector. Overview Archimedes ... scribe. In the 12th century the original Archimedes codex was unbound, scraped and washed ..., and Archimedes work is now readable after scientific and scholarly work from 1998 to 2008 using digital ... web url http www.archimedespalimpsest.org digitalproduct1.html title The Archimedes Palimpsest Project ... photographs he arranged to have taken, he published a transcription of the Archimedes text. Shortly thereafter Archimedes Greek language Greek text was translated into English language English by T. L ... last Morelle ref Mathematical content File ArPalimTypPage.jpg thumb 280px A typical page from the Archimedes Palimpsest. The text of the prayer book is seen from top to bottom, the original Archimedes ... 280px After imaging a page from the palimpsest, the original Archimedes text is now seen clearly ... contains the only known copy. In his other works, Archimedes often proves the equality ... amount, then Q is found, or exhausted , by U and L. Archimedes used exhaustion to prove his ... to be rigorous and correct, used geometry with rare brilliance. Later writers often criticized Archimedes ... in The Method . The method that Archimedes describes was based upon his investigations of physics ..., Archimedes was able to solve several problems now treated by integral calculus , which was given ... of its secant line s. For explicit details, see Archimedes use of infinitesimals . When rigorously proving theorems, Archimedes often used what are now called Riemann sum s. In On the Sphere and Cylinder .... But there are two essential differences between Archimedes method and 19th century methods ... more details
Multiple issues citation style September 2009 primarysources September 2009 tone September 2009 Archimedes lab.org is a free and collaborative edutainment website developed and maintained by Gianni A. Sarcone and Marie Jo Waeber, two authors and writers with more than twenty years of experience in the fields of visual thinking and education . The main goal of the site is to popularize math through puzzles and games. Archimedes lab.org is divided into three main categories puzzles & tests, illusions & paradoxes, oddities & curiosities. Among the proposed educational things, visitors will find number games, riddles, puzzles with downloadable pieces, perception puzzles and interactive optical illusions . A principal objective throughout the site is the enhancement of critical thinking skills. Here s a quote from Scientific American May 27, 2003 This virtual lab borrows the empirical spirit and creative curiosity that Archimedes brought to his work and invites visitors to explore with the same expectations for mind blowing discovery. Archimedes lab.org has won several http www.archimedes lab.org pressrelease.html awards from scientific and educational publications, including a http www.sciam.com article.cfm?articleID 00077DD8 59F2 1ECA 8E1C809EC588EF21 Scientific American Web Award in 2003, the http www.nctm.org news webbytes 2004 05webbytes.htm NCTM National Council of Teachers of Mathematics Webby Awards Webby , and a mention in http www.merlot.org artifact ArtifactDetail.po?oid 1010000000000223431 Merlot , the Multimedia Educational Resource for Learning and Online teaching. Selected works Books from Archimedes Laboratory 2007 http www.amazon.co.uk dp 1844420647 Puzzillusions , Carlton Books Ltd, London, ISBN 1 84442 064 7 2006 http www.amazon.com dp 0764135201 Big Book of Optical Illusions , Barron s Educational Series , New York, ISBN 0 7641 3520 1 2006 http www.bzztoh.nl ... lab.org Archimedes lab.org Category Educational websites Category Mathematics websites Category ... more details
Infobox architect name Archimedes Russell image image size caption nationality birth date 1840 birth place Andover, Massachusetts death date 1915 death place practice significant buildings Crouse College, Syracuse University significant projects significant design awards File CTHS Syracuse.jpg thumb Central Technical High School in Syracuse File Third National Bank Syracuse, NY.JPG thumb Third National Bank Syracuse, New York Third National Bank in Syracuse File June03 007.jpg thumb Crouse College, Syracuse University Archimedes Russell 1840 1915 was an American architect most active in the Syracuse, New York area. Born in Andover, Massachusetts and trained under local architect Horatio Nelson White , Russell served as a professor of architecture at Syracuse University from 1873 through 1881. ref http archives.syr.edu collections faculty russell.html ref In the course of his career he designed over 850 commercial and civic buildings in the central New York region, including the David H. Burrell Mansion in Little Falls city , New York Little Falls, New York , a Queen Anne Romanesque Revival stone mansion. Work File Syracuse Courthouse.jpg right 250px thumb Onondaga County Court House with Columbus Obelisk in foreground Russell s work, much of which has been listed on the National Register of Historic Places , includes First Baptist Church of Camillus , 1879 Otsego County Courthouse Otsego County New York Courthouse , 1880 Crouse College, Syracuse University , 1881 Third National Bank Syracuse, New York Third National Bank , aka the Community Chest Building, Syracuse, 1885 Overlook ... References reflist External links Portal Biography http syracusethenandnow.org Architects Russel Archimedes Russel.htm Archimedes Russell, at Syracuse Then and Now Persondata Metadata see Wikipedia Persondata . NAME Russell, Archimedes ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH 1840 PLACE OF BIRTH Andover, Massachusetts DATE OF DEATH 1915 PLACE OF DEATH DEFAULTSORT Russell, Archimedes Category ... more details
Orphan date February 2009 The Archimedes Foundation is an independent body established by the Estonia n government in 1997 with the objective to coordinate and implement different international and national programmes and projects in the field of training, education, research, technological development and innovation. ref Organisation for Economic Co operation and Development, Reviews of National Policies for Education Estonia , Published by OECD, 2001 ISBN 92 64 18607 7, p161 ref Main tasks Unreferenced section date September 2009 The website of the Foundation lists the following as its main tasks. In the field of R&D Estonian National Contact Point Organisation for EU Seventh Research Framework Programme. Main objective is to consult and train Estonian researchers and enterprises for successful participation in programme. Coordinator of COST European Cooperation in the field of Scientific and Technical Research in Estonia. Administrative body for Estonian Research Council. Conducting research evaluation in Estonia. Helpdesk for the Estonian Research Information System an information channel for submitting and processing grant applications and for submitting and confirming project report. Bridgehead organisation of EURAXESS services that provides solutions for mobile researchers. Coordinating science communication and popularisation initiatives Implementing Agency of Structural Support for the period 2007 2013 In the field of Education Implementing body of EU Lifelong Learning Programme. Acting as the Estonian Higher Education Quality Agency that carries out institutional accreditation and quality assessment of study groups. Acting as the Academic Recognition Information Centre Estonian ENIC NARIC that evaluates foreign qualifications and provides information about foreign higher education systems. Coordining national initiatives aimed to improve the competitiveness of Estonian ... index.php?language 2 Homepage of Archimedes Foundation Category Education in Estonia et Archimedes sihtasutus ... more details
Encyclopedia
top
