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Projector (other)
A projector is a device that projects an image on a surface. Projector may also refer to: Computing * Projector PSA, a software and cloud-computing company * Projector, a version control system used in the Macintosh Programmer's Workshop Weaponry * Projector, a type of mortar ** Livens Projector ** PIAT (Projector, Infantry, Anti Tank), British Second World War spigot mortar * Holman Projector * Northover Projector Other uses * ''Projector'' (album), a 1999 album by Dark Tranquillity * Projector (patent), the original inventor to reduce an invention to practice * In mathematics, a projection operator *The Projector, a Singaporean cinema chain See also * Corporate promoter or projector, e.g. in the phrase "railway projectors" * Projection (other) Projection, projections or projective may refer to: Physics * Projection (physics), the action/process of light, heat, or sound reflecting from a surface to another in a different direction * The display of images by a pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Projector
A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers. A virtual retinal display, or retinal projector, is a projector that projects an image directly on the retina instead of using an external projection screen. The most common type of projector used today is called a video projector. Video projectors are digital replacements for earlier types of projectors such as slide projectors and overhead projectors. These earlier types of projectors were mostly replaced with digital video projectors throughout the 1990s and early 2000s, but old analog projectors are still used at some places. The newest types of projectors are handheld projectors that use lasers or LEDs to project images. Movie theaters used a type of projector called a m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Projector PSA
Projector PSA, Inc. is a developer of cloud-based professional services automation (PSA) software. On July 12, 2022, the company was acquired by BigTime Software. History Projector PSA was started in 2002 by a group of employees at Agency.com. Their self-developed application used to manage Agency.com became the prototype for Projector PSA's main software offering, Projector. In 2003 Projector PSA, Inc. was formed and in mid-2004 they released the first version of Projector. Software Projector is a business application that is intended to be used by project-based organizations. Projector is considered Professional Services Automation, or PSA software. Projector is designed to help companies with project management, resource scheduling, and project accounting. Projector is a cloud-based application that allows users to access the application anywhere they have an internet connection. Projector has two main interfaces, one called the Employee Portal and a second called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macintosh Programmer's Workshop
Macintosh Programmer's Workshop (MPW) is a software development environment for the Classic Mac OS operating system, written by Apple Computer. For Macintosh developers, it was one of the primary tools for building applications for System 7.x and Mac OS 8.x and 9.x. Initially MPW was available for purchase as part of Apple's professional developers program, but Apple made it a free download after it was superseded by CodeWarrior. On Mac OS X it was replaced by the Project Builder IDE, which eventually became Xcode. Design MPW provided a command line environment and tools, including 68k and PowerPC assemblers as well as Pascal, C and C++ compilers. The shell environment is somewhat similar to Unix shells in design, but is designed around the Macintosh's character set and GUI, replacing the usual terminal environment with a "worksheet" interface, allowing the user to select and run arbitrary sections of a shell script or to redo commands with no retyping. In addition, comma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mortar (weapon)
A mortar is usually a simple, lightweight, man-portable, muzzle-loaded weapon, consisting of a smooth-bore (although some models use a rifled barrel) metal tube fixed to a base plate (to spread out the recoil) with a lightweight bipod mount and a sight. They launch explosive shells (technically called bombs) in high-arcing ballistic trajectories. Mortars are typically used as indirect fire weapons for close fire support with a variety of ammunition. History Mortars have been used for hundreds of years. The earliest mortars were used in Korea in a 1413 naval battle when Korean gunsmiths developed the ''wan'gu'' (gourd-shaped mortar) (완구, 碗口). The earliest version of the ''wan'gu'' dates back to 1407. Choi Hae-san (최해산, 崔海山) (1380–1443), the son of Choe Mu-seon (최무선, 崔茂宣) (1325–1395), is generally credited with inventing the ''wan'gu''. In the Ming dynasty, general Qi Jiguang recorded the use of a mini cannon called the Hu dun pao that was simi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Livens Projector
The Livens Projector was a simple mortar-like weapon that could throw large drums filled with flammable or toxic chemicals. In the First World War, the Livens Projector became the standard means of delivering gas attacks by the British Army and it remained in its arsenal until the early years of the Second World War.''The Use of Gas in the Field'', 1940 History The Livens Projector was created by Captain William Livens of the Royal Engineers. Livens designed a number of novel weapons, including a large-calibre flame thrower, to engulf German trenches in burning oil, that was deployed at the Somme in 1916. (One of these weapons was partially excavated in 2010 for an episode of archaeological television programme ''Time Team'', having been buried when the tunnel in which it was being built was hit by a German shell.) In the Second World War, he worked on petroleum warfare weapons such as the flame fougasse and various other flame weapons. Prior to the invention of the Livens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PIAT
The Projector, Infantry, Anti Tank (PIAT) Mk I was a British man-portable anti-tank weapon developed during the Second World War. The PIAT was designed in 1942 in response to the British Army's need for a more effective infantry anti-tank weapon and entered service in 1943. The PIAT was based on the spigot mortar system, and projected (launched) a 2.5 pound (1.1 kg) shaped charge bomb using a cartridge in the tail of the projectile. It possessed an effective range of approximately in a direct fire anti-tank role, and in an indirect fire role. The PIAT had several advantages over other infantry anti-tank weapons of the period: it had greatly increased penetration power over the previous anti-tank rifles, it had no back-blast which might reveal the position of the user or accidentally injure friendly soldiers around the user, and it was simple in construction. However, the device also had some disadvantages: powerful recoil, a difficulty in cocking the weapon, and early prob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holman Projector
The Holman Projector was an anti-aircraft weapon used by the Royal Navy during World War II, primarily between early 1940 and late 1941. The weapon was proposed and designed by Holmans, a machine tool manufacturer based at Camborne, Cornwall. A number of models were produced during the war years, but all worked on the principle of a pneumatic mortar, using compressed air or high pressure steam to fire an explosive projectile at enemy aircraft. Intended primarily as a stop-gap defensive weapon for British merchant ships, which had been suffering heavy losses from Luftwaffe aircraft flying anti-shipping missions, the low altitude at which such strikes often took place (such as during torpedo attacks by Heinkel He 111s or skip-bombing attacks by Focke-Wulf Fw 200 Condor) meant that a weapon of such limited range and velocity could throw up an effective screen of fire over a vessel, even if only to create a distracting or deterrent effect, obliging the enemy to bomb from greater h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northover Projector
The Projector, 2.5 inch—more commonly known as the Northover Projector—was an ''ad hoc'' anti-tank weapon used by the British Army and Home Guard during the Second World War. With a German invasion of Great Britain seeming likely after the defeat in the Battle of France, most available weaponry was diverted to the regular British Army, leaving the Home Guard short on supplies, particularly anti-tank weaponry. The Northover Projector was designed by Home Guard officer Robert Harry Northover to act as a makeshift anti-tank weapon, and was put into production in 1940 following a demonstration to the Prime Minister, Winston Churchill. The weapon consisted of a hollow metal tube attached to a tripod, with a rudimentary breech at one end. Rounds were fired with the use of black powder ignited by a standard musket percussion cap, and it had an effective range of between 100 and 150 yards. Although it was cheap and easy to manufacture, it did have several problems; it was difficu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Projector (album)
''Projector'' (stylized : projector, or on the reissue p.r.o.j.e.c.t.o.r.) is the fourth studio album by Swedish melodic death metal band Dark Tranquillity. Lineup change In January 1999, with the album recorded months prior, and its release months ahead, Fredrik Johansson and Dark Tranquillity mutually split. It was due to Johansson wanting to focus more on being a father, meaning he couldn't tour with the band. Johansson didn’t want to leave his family anymore and he wanted to keep a day job as opposed to the difficulties of being in the music industry. There were mutually no hard feelings between both parties, but with all of Johansson's reasons, the band still saw it as a lack of commitment to Dark Tranquillity as well. The album marks the last release with Johansson. With difficulties always finding a new guitar player, a switch then occurred in the band when Johansson's empty guitarist position was then taken the band's bassist Martin Henriksson, who was reluctant at t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Projector (patent)
Projector is a 19th-century term in United States patent law meaning the original true inventor. "True inventor" at the time meant the first inventor to reduce an invention to practice. As a synonym for promoter, e.g. in the phrase "railway projectors", the term was used in a derogatory fashion in a 1790 document. In that discussion of needed changes in the patent act, 'projector' described someone who overzealously promotes an invention.Frank D. Prager, "Proposals for the Patent Act of 1790", ''Journal of the Patent and Trademark Office Society'', March 1954, vol XXXVI, No. 3, pp 157 et Seq. See also *Corporate promoter *Inventor (patent) *Patent medicine *Patent troll In international law and business, patent trolling or patent hoarding is a categorical or pejorative term applied to a person or company that attempts to enforce patent rights against accused infringers far beyond the patent's actual value or ... References United States patent law {{US-law-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Projection (linear Algebra)
In linear algebra and functional analysis, a projection is a linear transformation P from a vector space to itself (an endomorphism) such that P\circ P=P. That is, whenever P is applied twice to any vector, it gives the same result as if it were applied once (i.e. P is idempotent). It leaves its image unchanged. This definition of "projection" formalizes and generalizes the idea of graphical projection. One can also consider the effect of a projection on a geometrical object by examining the effect of the projection on points in the object. Definitions A projection on a vector space V is a linear operator P : V \to V such that P^2 = P. When V has an inner product and is complete (i.e. when V is a Hilbert space) the concept of orthogonality can be used. A projection P on a Hilbert space V is called an orthogonal projection if it satisfies \langle P \mathbf x, \mathbf y \rangle = \langle \mathbf x, P \mathbf y \rangle for all \mathbf x, \mathbf y \in V. A projection on a Hilbert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Projector
The Projector is a Singaporean independent cinema founded in 2014 in Singapore, specializing in arts-house films. It has two locations, including one at the Golden Mile Tower and one at Riverside Point. History The Projector was founded in 2014 by Karen Tan, Sharon Tan and Blaise Trigg-Smith, under their company Pocket Projects. Sharon Tan was the general manager. The venue was originally founded as Golden Theatre in 1973, the biggest cinema at the time in Singapore and Malaysia, with a single hall that sat up to 1,500 people. In 1990s, the venue was split into 3 halls. Eventually in 2014, Golden Theatre retained the largest 1,000-seats hall, while The Projector took over the smaller halls. In 2019, Sharon Tan left the cinema and Prashant Somosundram took over as general manager. During the COVID-19 pandemic, COVID-19 Pandemic, they paused operations from 31 May to 13 June 2021 across all theaters, due to tough business conditions caused by new COVID-19 containment measures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
