nihongo Megastar Megasut is a series of planetarium projectors which was recorded in Guinness World Records ref http www.miraikan.jst.go.jp en press docs 040420.pdf Megastar in Miraikan ref in 2004 as the planetarium projector that can project the most number of stars in the world. Megastar was developed by Takayuki Ohira in Kawasaki, Kanagawa Kawasaki , Japan in 1998. ref http www.megastar.jp en about index.php About Megastar ref References Reflist External links Official website http www.megastar.jp en index.php Category Planetaria Product stub ja ... more details
. Image Projecteur cin matographique 35mm.jpg 300px thumb 35 mm movie projector in operation. A movie projector is an optics opto mechanics mechanical device for displaying Film moving pictures by projecting ... nitrate base prints catching fire in the projector. A dramatic rendition of a nitrate ... frame s. Principles of operation Image Projmech.jpg 600px left thumb 35 mm Kinoton FP30ST movie projector, with parts labeled. Click thumbnail for larger text. Projection elements As in a slide projector ... . Some projectors have a third, mechanically controlled douser that automatically closes when the projector slows down called a fire shutter or fire douser , to protect the film if the projector stops ... past the projector s intense light source this is not the case. If a roll of film were merely passed between the light source and the lens of the projector, all that would be visible on screen would ... movie projector focal length 400 mm A objective optics projection objective with multiple optical elements ... it. Film transport elements Film supply and takeup Two reel system In the two reel system the projector ... reel projector the feed reel has a slight drag to maintain tension on the film, while the takeup ..., where it is inaccessible. As each reel is taken off of the projector, it must be re wound onto another ... mm projectors often used in schools and churches, the projector could be re configured to rewind ... between the end of one reel on the first projector and the beginning of the next reel on the second projector. The two reel system was used almost universally for movie theaters before the advent ... use to this day. The projector operator operates two projectors, starting the 1st reel of the show on projector A. While this reel is being shown, the projectionist threads the 2nd reel on projector ... to start the motor of the projector containing the next reel. After another ten and a half feet 3.2 ... a START frame. The projectionist positions the start in the gate of the projector. When the first ... more details
Infobox Weapon name Livens Projector image Image Livens gas projector loading.jpg 300px caption United ... to projector drums . Ministry of Munitions 1922, Volume XI, Part II Chemical Warfare Supplies ... The Livens Projector was a simple mortar like weapon that could throw large drums filled with flame ... ref In the World War I First World War , the Livens Projector became the standard means of delivering ... Projector, chemical weapons had been delivered either by cloud attacks or chemical filled shells ... everything that Livens needed for his large projector. ref Awards to Inventors, 1922, p51 62 ref ... developed the Livens Projector, increasing its range to 350 yards and eventually an electrically triggered ... Messines Ridge in June 1917. ref name Western Front Association The Livens Projector was then modified ... in September 1916 and Beaumont Hamel in November. ref name Western Front Association The Livens Projector ... be launched quickly, catching the enemy by surprise. Although each projector could be fired just ... thousands. The Livens Projector was also used to fire other substances. At one time or another the drums ..., p. 272. ref The Livens Projector remained in the arsenal of the British Army until the early years ... bomb unearthed on the Somme, 2006 The Livens Projector was designed to combine the advantages of gas ... 1934, p. 202. ref The projector was somewhat unreliable. In order to safeguard friendly forces from shorts an area immediately ahead of the projector battery was cleared of troops before firing. This area ... companies, RE. ref name The Use Of Gas In The Field, 1940 The projector s unreliability and inaccuracy ... was profound. In a captured German document, dated 27 12 17, an English gas projector bombardment ... Projector M1 TM 3 325 cite book last first title The Use Of Gas In The Field publisher War Office ... Press of Kansas series year 1992 isbn 0 7006 1113 4 External links commons category Livens Projector ... corpshistory rem corps part14.htm Royal Engineers Museum, First World War Livens Projector cite ... more details
Talaria was the brand name of a large venue video projector from General Electric . Image GE Taleria.png thumb 200px Early model GE Talaria light valve video projector. Light from a Xenon arc lamp was modulated by a light valve consisting of a rotating glass disc that was continuously re coated with a viscous oil. An electron beam similar to the one in a cathode ray tube traced a raster graphics raster on the surface of the coated glass, deforming the surface of the oil. Where the oil was undisturbed, the light would be reflected into a light trap. The raster traced into the oil formed a diffraction grating . The basic unit was monochrome PJ7000 line . Color display is accomplished in one of two ways The single lens color projector PJ5000 line use dichroic filters to separate the white light of the xenon bulb in two channels, Green and Magenta. RGB color separation and processing is obtained using vertical Wobbulator wobbulation of the electron beam on the oil film to modulate the green channel and sawtooth modulation is added to the horizontal sweep to separate and modulate Red and Blue channels. The optical system used in the Talaria line is a Schlieren optic like an Eidophor , but the color extraction is much more complex. Two units MLV or three units 3LV are stacked one atop the other, each one devoted to a single color 3LV . ref name 3LV cite web title Television Technical Theory Unplugged publisher danalee.ca url http www.danalee.ca ttt monitors and television sets.htm accessdate 2008 08 22 ref In early models PJ5000 , the light source was a 650 watt xenon bulb sealed beam similar to the units in modern 35mm film projectors, and produced 250 lumens at a 75 1 contrast ratio. ref name 12k cite web title GE Lightvalve 12K publisher hi def.com url http www.hi def.com 12K.html accessdate 2008 08 22 Dead link date October 2010 bot H3llBot ref The later 3LV model produced as much as 3500 lumens at a 250 1 contrast ratio. ref name 3500lumens cite web title DISPLAY TECHNOLOGIES ... more details
refimprove date May 2010 File Carousel slide projector 0a.jpg thumb right A carousel slide projector. A carousel slide projector is a common form of slide projector , used to project reversal film slide photographs and to create slideshow s. The first carousel slide projector was invented by Louis Misuraca, who immigrated to the United States from Naples, Italy when he was a child. Louis was paid a one time fee for his invention by the Eastman Kodak Eastman Kodak Company and did not earn royalties. He used the money to take his family on a trip to Italy. Physical form A separate, circular tray holds several slides usually 80 or 140 35mm slides, and is filled with each slide placed in upside down and backwards, so that the image is presented with the correct orientation. The tray has a metal plate on the bottom with an opening about 5 cm wide barely long enough to pass a single slide to the projection gate below it. The projector body contains a motor which rotates the plastic main body of the tray containing the slides while the metal plate is fixed with the opening over the projection gate. As the tray is advanced, a reciprocating mechanism pushes the currently loaded slide back out into the tray, then the tray is rotated, dropping the next slide into position between the light ... spilling out of the tray if it was dropped. By using gravity to lower the slide into the projector ... at which it encountered resistance in the mechanism. The circular tray also enabled the projector ... the 1970s, Kodak also produced a Pocket Carousel projector for use with miniature 110 film 110 ... 2006 11 09. ref The Kodak Carousel projector was discontinued in October 2004. ref http slideprojector.kodak.com ... alt as of November 2004 , retrieved 2006 11 09. ref In popular culture The carousel slide projector ... Slide Projector on http www.porterelectronics.com servlet the Projectors cln Slide Projectors Categories Porter Electronics Website where they are still available DEFAULTSORT Carousel Slide Projector ... more details
Merge Laser video display date July 2010 A laser video projector is a video projector that modulates a laser beam in order to project a Raster scan raster based image. The systems work either by scanning the entire picture a dot at a time and modulating the laser directly at high frequency, much like the electron beams in a cathode ray tube , or by optically spreading and then modulating the laser and scanning a line at a time, the line itself being modulated in much the same way as with Digital Light Processing DLP . When well implemented this technology produces the broadest Gamut color gamut available in practical display equipment today, because lasers produce truly monochromatic primaries. Assembly Laser signal modulation The video Signalling telecommunication signal is introduced to the laser beam by an acousto optic modulator AOM that uses a photorefractive effect photorefractive crystal to separate the beam at distinct diffraction angles. The beam must enter the crystal at the specific Bragg diffraction Bragg angle of that AOM crystal. A piezoelectric element transforms the video signal into vibrations in the crystal to create a diffraction grating . Horizontal and vertical refresh A rapidly rotating polygonal mirror gives the laser beam the horizontal refresh modulation. It reflects ... a screen. A laser projector of this type consists of three main components a laser source uses ... a screen at an arbitrary distance. Such laser projection techniques are used in handheld projector s, planetariums ... of a laser projector is typically 50,000 1 and higher, while modern DLP and LCD projector s range ... www.microvision.com showwx Microvision ShowWX 15 Lumen unit Lumen handheld mobile projector and OEM component http lightblueoptics.com Light Blue Optics 4 Lumen unit Lumen projector Colorado Springs, Colorado office closed as of 2011 09 01 See also Digital projector LCD projector Laser light show DEFAULTSORT Laser Video Projector Category Projectors Category Laser image generation ja ... more details
multiple issues cleanup February 2008 context February 2008 essay like February 2008 primarysources February 2008 unreferenced February 2008 no footnotes September 2011 A large format slide projector also often called large format projector or large image projector is a kind of slide projector for large image projection which has a very powerful light source up to 12 thousand watts using arc lamps . Therefore it is necessary to use a large slide format to protect the slide material from overheating during the projection process even when the light is filtered to only visible light and the slide is cooled with strong slide cooling fans . Slide formats of 18 18 cm 7.1 7.1 or 24 24 cm 9.4 9.4 . On the other hand this formats are so large that it is possible to project slides painted with heat resistant translucent colours as a special kind of art projection art . The light output of the projector is so enormous that it is possible to cover whole buildings with an artistic cover of light. History The first large format slide projectors were built in the middle of the 20th century as background projectors for theaters and opera houses. The artists Professor Schneider Siemmsen ref http www.fanfaire.com schneider siemssen index.html ref , Professor Svoboda and Herbert von Karajan used the large format slide projectors as stage projectors in their artwork. In good cooperation with the technician Ing. Ludwig Pani, ref http www.pani.com unternehmen daten e daten.html?english ref they realized the first large format projections as an integrated part of their artwork. Artists using this technology http www.siegwulf turek.at english Prof. Siegwulf Turek http www.bartkresa.com Bart Kresa http www.casamagica.com Friedrich F rster and Sabine Weissinger http www.doraberkes.com Dora Berkes http www.peterkozma.com Peter Kozma http www.nordegg.berkh.at C cile Nordegg and Jonathan Berkh http www.starsky projections.com Julia Starsky http www.euboia.sk Gordana Turuk glass slide ... more details
The projector augmented wave method PAW is a technique used in Ab initio quantum chemistry methods ab initio electronic structure calculations. It is a generalization of the pseudopotential and linear augmented plane wave methods, and allows for density functional theory calculations to be performed with greater computational efficiency. ref cite journal first P.E. last Bl chl year 1994 title Projector augmented wave method journal Physical Review B volume 50 issue 24 pages 17953 17978 doi 10.1103 PhysRevB.50.17953 ref Valence wavefunctions tend to have rapid oscillations near ion cores due to the requirement that they be orthogonal to core states this situation is problematic because it requires many Fourier components or in the case of grid based methods, a very fine mesh to describe the wavefunctions accurately. The PAW approach addresses this issue by transforming these rapidly oscillating wavefunctions into smooth wavefunctions which are more computationally convenient. This approach is somewhat reminiscent of a change from the Schr dinger picture to the Heisenberg picture . The linear transformation math mathcal T math transforms the fictitious pseudo wavefunction math tilde Psi rangle math to the all electron wavefunction math Psi rangle math math Psi rangle mathcal T tilde Psi rangle math Note that the all electron wavefunction is a Kohn Sham single particle wavefunction, and should not be confused with the many body wavefunction. In order to have math tilde Psi rangle math and math Psi rangle math differ only in the regions near the ion cores, we write math mathcal T 1 sum R hat mathcal T R math , where math hat mathcal T R math is non zero only within some spherical ... math c i math can be written as an inner product with a set of so called projector functions ... math a set of projector functions math p i rangle math Outside the augmentation regions, the pseudo ... title The Projector Augmented wave Method year 2010 version v2 Software implementing the projector ... more details
Unreferenced stub auto yes date December 2009 Orphan date December 2009 A slide cube projector is a type of slide projector that was created by Bell & Howell and was sold up through the 1980s. The system gets its name from the plastic cubes that slides are stored in. The cubes are about 5.5 cm in each dimension a bit larger than a slide , and hold 36 44 slides depending on the mount thickness. Unlike the trays used in Carousel slide projector carousel projectors , the slides in a cube are not separated from each other they are simply stacked one on top of the other. The slide advance mechanism depends on a slide dropping from the loaded cube into a slide size hole in a circular plate. The plate is thinner than a slide and so should grab only a single slide and move it forward, first to a preview section, then to the projection position, then to a holding position from which it can be returned to allow for a single slide s worth of backup, and then finally to a position in which it drops into a stack that can be pushed back up into the cube after projection is completed. Slide cube projectors were popular at one time because the cubes were cheaper than carousels and they allow for much higher storage density a book or drawer of 16 forty slide cubes 640 slides fits in the space of a single carousel that holds at most 140 slides. The stack storage and preview feature also makes for much easier editing of slideshow slide shows slides can be added or removed from the show without having to shift all of the remaining slides up or down in their slots one at a time. Carousel projectors can use stack loaders to view a stack of slides, but they don t lend themselves to this type of operation and there is no associated storage system. However, the slide cube projection system ultimately faded out because of its serious drawbacks, including the inability to back up more than ... and elsewhere. DEFAULTSORT Slide Cube Projector Category Projectors Photo stub ... more details
Infobox Weapon name Livens Large Gallery Flame Projector image Image Livens Large Gallery Flame Projector 1.jpg 260px caption origin flagicon United Kingdom United Kingdom of Great Britain and Ireland United Kingdom type Flamethrower is ranged YES is UK YES service 1916 1917 used by British Army wars First World War designer William Howard Livens production date 1915 1916 ? number at least 5 ? weight convert 2.5 LT MT length convert 56 ft m Livens Large Gallery Flame Projectors were large experimental flamethrower s used by the British Army in World War I . They were named after their inventor, a Royal Engineers officer William Howard Livens . Four were deployed in 1916 the Battle of the Somme and one in 1917 in an offensive near Diksmuide , Belgium. Two of the weapons at the Somme were destroyed by German shelling before they could be used, but the other two were used at the start of the offensive. Their use is a possible explanation for helping the success of the British in those particular sectors of the front. British losses there were comparatively low. ref name tele cite web url http www.telegraph.co.uk news newstopics howaboutthat 7697251 Secret terror weapon of the Somme battle discovered.html format title Secret terror weapon of the Somme battle discovered work The Sunday Telegraph page accessdate 11 April 2011 author Jasper Copping date 9 May 2010 publisher Telegraph Media Group quote Unleashed at the start of the Battle of the Somme, it produced a terrifying effect the like of which had never before been seen on a battlefield ref The weapons were convert 56 ft m long ... special on archaeological dig for the livens flame projector dig at mametz somme to be aired at 9pm ... Special on archaeological dig for the Livens Flame Projector dig at Mametz, Somme to be aired at 9pm on Thursday 14 April Accessed 11 April 2011 ref Image Livens Large Gallery Flame Projector 2.jpg thumb Livens Large Gallery Flame Projector 2 References Reflist External links http i.telegraph.co.uk ... more details
Video player can refer to the following Hardware video players Videocassette recorder VCR Laserdisc Laserdisc player DVD player Software video players Video player software See also Portable media player Movie projector Video projector disambig da Videoafspiller sv Videospelare ... more details
A Y gun may refer to A type of Depth charge projector A gun in the Gun turret Naming Y position of a war ship in this context the term will normally be plural i.e. Y guns disambig ... more details
Orphan date February 2009 Unreferenced date June 2008 Mostly large format projection or large image projection is used for the use of large format slide projector s or extremely powerful video projector s for producing still standing or dynamic images on projection areas of about 100 10,000 m sup 2 sup and more. Sometimes the use of slide projector and video projector is combined to reach a kind of picture in picture projection to enable larger projections with a dynamic part inside. But that is a speciality of projection artists which have a lot of detailed know how of the projection parameters. Category Projectors tech stub ... more details
Audiovisual education or multimedia based education MBE is instruction where particular attention is paid to the audio and visual presentation of the material with the goal of improving comprehension and retention. After the use of training films and other visual aids during World War II , audiovisual technology gradually developed in sophistication and its use became more widespread in educational establishments such as schools, colleges, universities, museums and galleries, as well as at tourist destinations, such as the purpose built circular cinema, Arromanches 360 http www.arromanches360.com , at Arromanches les Bains , which shows a 360 film presentation of the Normandy Landings Normandy landings . Equipment used for audiovisual presentations Note for editors place in approximate order of introduction? Diorama s Magic lantern s Planetarium Film projector s Slide projector s Opaque projector s episcopes and epidiascopes Overhead projector s Tape recorder s Television Video Camcorder s Video projector s Interactive whiteboard s Video clip Digital video clips edu stub Category Pedagogy Category Multimedia sv AV teknik ... more details
primary sources date August 2008 File Victoria 5.jpg thumb Victoria 5 projector Cinemeccanica is a motion picture equipment company specializing in Movie projector cinema projectors . The company was formed in 1920 in Milano , Italy. Currently they have two film projectors available, the Victoria 5 introduced in 1975 and the Victoria 8 introduced in 1961 . A new digital projector, the CMC3 D2 is also available. The Victoria 8 at one time came in two models, a 35 mm film gauge and a dual 35 70 mm film gauge. The projector has become less popular in recent years with the smaller and cheaper Victoria 5 now the best selling projector from Cinemeccanica. The company also manufacture film platter systems the CNR 35N , film rewinders and Dolby Digital and Dolby SR SR soundtrack readers. External links Commons category http www.cinemeccanica.it Cinemeccanica http www.answers.com topic cinemeccanica s p a Answers article about Cinemeccanica http www.youtube.com watch?v R x74LW7vZo Youtube video of a Victoria 5 Projector Category Companies established in 1920 Category Manufacturing companies of Italy Category Projectors it Cinemeccanica ru Cinemeccanica ... more details
and the central ray from the projector, and math alpha math is the width of the focus. From the formula ... the projector more to the center of the screen, if this does not interrupt vision Tilt the screen in a small angle Use some type of software on the projector or computer controlling the projector ... Video projector multimedia projector s that are not placed perpendicular to the horizontal centerline ... necessary for a projector to be placed in a position outside the line perpendicular to the screen and going through the screen s center, for example, when the projector is mounted to a ceiling ... that would otherwise result due to angled projection. It is rare for a projector to have the ability ... . Typically this is easily corrected by moving the projector left or right as necessary, or less often ... DLP mirrors of the projector, depending on the technology used. Thus, when applying keystone correction ... where the projector cannot be mounted directly in front of the screen, or on projectors utilizing lens shift technology where the projector must be mounted outside the frame of the screen. See ... more details
Unreferenced date November 2006 orphan date November 2009 The Urban Bioscope , also known as the Warwick Bioscope was a film projector developed by Walter Isaacs in 1897 for Charles Urban of the Warwick Trading Company . The projector used a beater movement, with a whisk orientation. Not to be confused with a turban bioscope , a type of hidden camera used extensively during the cold war. Category History of film Category Film and video technology Filming stub ... more details
Orphan date April 2010 A virtual touch screen is a user interface system that displays images in thin air. The screen uses a rear Image projector projector system to create images that look three dimensional and appear to float in midair. ref Discovering Computers 2008 ref The user interacts with images using their hands and no specialized equipment is needed. Notes references References Discovering Computers 2008 Introductory book, Shelly Cashman Vermaat Category Human computer interaction ... more details
Wiktionary megastar Megastar may refer to Celebrities Megastar, a particularly notable superstar MegaStar, nickname of Indian Telugu film actor Chiranjeevi Products Megastar projector , A series of planetarium projectors See also Superstar disambiguation Disambig ... more details
Orphan date February 2009 A Projection panel is a device that, although no longer in production, was used as a Video projector data projector is today. It works with an overhead projector OHP . The panel consists of a translucent LCD, and a fan to keep it cool. The projection panel sits on the bed of the OHP, and acts like a piece of OHT transparency. The panels have a Video Graphics Array VGA input, and sometimes Composite video Composite RCA and S Video . Later models have remotes, with functions such as Freeze which lets you freeze the image, useful for when you want to leave something on the screen whilst you do other things. Earlier models only had 640x480 resolution, while newer ones had up to Super Video Graphics Array SVGA resolution. Proxima, one maker of the panels, included a magic wand and sensor, which worked with the sensor detecting where you put the wand, to create and interactive effect, the equivalent of today s Smart boards. Although they are not produced anymore, used panels can be purchased for a fraction of the price of a data projector. The panels are quite dim, as they do not let a great deal of light through, so brightness can be a problem, even with a powerful OHP. These panels are now no longer used for commercial uses, but they make a good cheap home cinema projector. Category Display technology ... more details
PWPAW A Projector Augmented Wave PAW code for electronic structure calculation. It is a free Software package installation software package , distributed under the copyleft GNU General Public License . It is a plane wave implementation of the projector augmented wave method projector augmented wave PAW method developed by Peter E Blochl for electronic structure calculations within the framework of density functional theory. In addition to the self consistent calculation of the electronic structure of a periodic solid, the program has a number of other capabilities, including structural geometry optimization and molecular dynamics simulations within the Born Oppenheimer approximation . ref http www.wfu.edu natalie papers pwpaw man.html Project augmented wave , www.wfu.edu, undated accessed 21 January 2007 ref References references See also Atompaw Software package for electron configuration calculations EXCITING Bloch wave Category Free science software Category Physics software ... more details
Unreferenced date December 2009 Year nav topic5 1886 film Events Louis Le Prince is granted an American dual patent on Louis Le Prince LePrince Cine Camera Projector types a 16 lens device that combines a Movie camera motion picture camera with a Movie projector projector . Births April 3 Reginald Barker , Canadian born American director died 1945 April 8 Lily Elsie , English singer and actress died 1962 May 26 Al Jolson Lithuanian born American actor singer died 1950 June 6 Reine Davies , American actress died 1938 July 26 Lars Hanson , Swedish actor died 1965 October 12 Karl Dane , Danish born American actor died 1934 November 18 Jack Abbott, American actor writer died 1964 DEFAULTSORT 1886 In Film Category Years in film mk 1886 ... more details
Piat may refer to PIAT , Projector, Infantry, Anti Tank an anti tank weapon Piat, Cagayan , a municipality in the Philippines Saint Piatus Piat, Piato, Piaton Church of Saint Piat, in Tournai See also Piatt disambiguation disambig fr Piat homonymie it Piat ... more details
Advert date December 2007 Orphan date November 2006 The Sanyo PLV Z4 is an LCD projector capable of projecting a 720p High definition video image, marketed for home cinema home theatre . The unit requires external speakers to produce audio. The projector uses high contrast 1280x720 LCD panels and has a dual iris system to adjust the brightness settings . The iris allows the device to increase the perceived contrast ratio of the projector. The unit has an automatically controlled sliding door that covers the lens system. Connections on the back of the unit are 1 x HDMI , 2 x Component Video , 1 x Composite video , 1 x VGA , 1 x S Video There is also a Serial communications serial connection that is used for maintenance. There is not a socket for automatically controlling a blind. The power requirements are 110 240v, 50 60 Hz. Maximum Electric power power consumption is 210W. Weight is 10.2 lbs 5 kg Tweaking A discussion on the popular audio video web site http www.avsforum.com avs vb showthread.php?p 7955015 avsforum.com has gone into great detail on tweaking the settings maximize the Z4 potential as a 720p projector. Category Liquid crystal displays Category Display devices Category Sanyo products PLV Z4 ... more details
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