Portal:Technology

The Technology Portal

P:TECH

Technology is the application of conceptual knowledge to achieve practical goals, especially in a reproducible way. The word technology can also mean the products resulting from such efforts, including both tangible tools such as utensils or machines, and intangible ones such as software. Technology plays a critical role in science, engineering, and everyday life.

Technological advancements have led to significant changes in society. The earliest known technology is the stone tool, used during prehistory, followed by the control of fire—which in turn contributed to the growth of the human brain and the development of language during the Ice Age, according to the cooking hypothesis. The invention of the wheel in the Bronze Age allowed greater travel and the creation of more complex machines. More recent technological inventions, including the printing press, telephone, and the Internet, have lowered barriers to communication and ushered in the knowledge economy. (Full article...)

Outline of technology

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Entries here consist of Good and Featured articles, which meet a core set of high editorial standards.

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U.S. Route 195 (US 195) is a north–south United States Highway, of which all but 0.65 miles of its 94.02 miles (1.05 of 151.95 km) are within the state of Washington. The highway starts in rural Idaho north of the city of Lewiston as a state highway in an interchange with US 95. As the road crosses into Washington it becomes a state highway that connects communities in the Palouse region of Eastern Washington. US 195 travels north, serving the cities of Pullman, Colfax and Rosalia in Whitman County before continuing into Spokane County to its terminus in the city of Spokane at an interchange with Interstate 90 (I-90).

The first section of US 195 designated as part of Washington's state highway system was codified in 1913 from Colfax to Spokane as the Inland Empire Highway and from the Idaho state line to Pullman as the Second Division of the Eastern Route of the Inland Empire Highway. The two highways were included as part of State Road 3 in 1923 and US 195 during the creation of the US Highway System on November 11, 1926. Originally, the northern terminus of the highway was at US 95 in Sandpoint, but was truncated to Spokane after US 2 was extended west from Bonners Ferry in 1946. (Full article...)
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Former Brooklyn Manor station site beneath the BMT Jamaica Line

The Brooklyn Manor station was a station on the Long Island Rail Road's Rockaway Beach Branch located on the south side of Jamaica Avenue at 100th Street, straddling the border between Richmond Hill and Woodhaven in Queens, New York City. The station name referred to the nearby Brooklyn Manor section of Woodhaven, originally a 603-lot development bounded by Woodhaven Boulevard to the west, 96th/98th Streets to the east, Forest Park to the north, and Jamaica Avenue to the south. The station opened in January 1911, and was constructed as a replacement for the Brooklyn Hills station, which was located 3,000 feet (910 m) to the north. This station closed along with the rest of the Rockaway Beach Branch in 1962, and was subsequently demolished. (Full article...)
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Indoor-outdoor thermometer

An indoor–outdoor thermometer is a thermometer that simultaneously provides a measurement of the indoor and outdoor temperatures. The outdoor part of the thermometer requires some kind of remote temperature sensing device. Conventionally, this was done by extending the bulb of the thermometer to the remote site. Modern instruments are more likely to use some form of electronic transducer. (Full article...)
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State Route 230 (SR 230) is a legislated, but unconstructed, state highway to be located in Adams and Whitman counties in the U.S. state of Washington. The highway would begin at a junction with concurrent highways Interstate 90 (I-90) and U.S. Route 395 (US 395) near Ritzville and travel east to an intersection with SR 23 near Ewan.

Plans for the first highway first emerged in 1943 as an extension of Primary State Highway 18 (PSH 18) to be studied after the conclusion of World War II. It was renumbered to SR 230 in 1964, but no further action was taken on constructing the highway. (Full article...)
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Main building of Pocinho station, in 2009

Pocinho railway station is located on the Iberian gauge Douro line, which serves the town of Pocinho, in the municipality of Vila Nova de Foz Coa, in northern Portugal. It also served as a junction with the Sabor line from its opening in 1911 until its closure in 1988. Since 1988 the station has been the terminus of the Douro Line, following the closure of the section that extended to Barca d'Alva and the Spanish border. There have been calls for this section to be reopened. (Full article...)
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Archway Road entrance to Highgate station

Highgate is a London Underground station and former railway station. It is located in Archway Road in the London Borough of Haringey, North London. The station takes its name from nearby Highgate Village. It is on the High Barnet branch of the Northern line, between East Finchley and Archway stations. It is in Travelcard Zone 3.

The station was originally opened in 1867, on the Great Northern Railway's line between Finsbury Park and Edgware stations. As part of their only partially completed Northern Heights plan, the London Underground started serving the station in 1941, using new platforms in tunnels beneath the surface station. The platforms of the surface station remain, but were last used in 1954; the section of the line through them to Finsbury Park was closed in 1970 and lifted by 1972. One of the original 1867 station buildings still exists and is in use as a private house. (Full article...)
Image 7

Throgs Neck Bridge from Fort Totten

The Throgs Neck Bridge is a suspension bridge in New York City, carrying six lanes of Interstate 295 (I-295) over the East River where it meets the Long Island Sound. The bridge connects the Throggs Neck section of the Bronx with the Bay Terrace section of Queens.

Opened on January 11, 1961, it is the newest bridge across the East River and was built to relieve traffic on the Bronx–Whitestone Bridge, 2 miles (3.2 km) to the west. The Throgs Neck Bridge is also the easternmost crossing of the East River. Due to this and its proximity to I-95, it is the closest route from Long Island to New Jersey via the George Washington Bridge, as well as points north. (Full article...)

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Image 1
Telephone
Credit: Berthold Werner
A telephone, or phone, is a telecommunications device that converts sound, typically the human voice, into electronic signals suitable for transmission via cables or other transmission media over long distances through satellite.
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Image 2
George Washington Carver
Photograph credit: Unknown; restored by Adam Cuerden
George Washington Carver (1860s–1943) was an American agricultural scientist and inventor. Born into slavery in Diamond, Missouri, he was raised by his master Moses Carver after being emancipated, having been separated from his parents as an infant during a kidnapping incident. After college, Carver became a professor at Tuskegee Institute, where he developed techniques to improve soils depleted by repeated plantings of cotton. He wanted poor farmers to grow alternative crops, such as peanuts and sweet potatoes, as a source of their own food and to improve their quality of life. Carver spent years developing and promoting products made from peanuts, although none became commercially successful. Apart from his work to improve the lives of farmers, he was also a leader in promoting environmentalism. Carver received numerous honors for his work, including the NAACP's Spingarn Medal. In an era of very high racial polarization, his fame reached beyond the black community; he was widely recognized and praised in the white community for his many achievements and talents. In 1941, Time magazine dubbed Carver a "black Leonardo".

This picture of Carver was taken around 1910 and is in the collection of the Tuskegee University archives.
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Image 3
Hybrid-propellant rocket
Photograph credit: Matt Steiner and Kees08
A hybrid-propellant rocket is a rocket with an engine that uses propellants in two different phases, one solid and the other gaseous or liquid. The concept can be traced back to at least the 1930s.

This picture shows a transparent 3D-printed hybrid-rocket fuel grain with dual helical fuel ports, a post-combustion chamber, and a de Laval nozzle, photographed prior to the hot-fire test. The motor used nitrous oxide as the oxidizer and Pyrodex pellets for the igniter.
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Image 4
Ruby Loftus Screwing a Breech Ring
Painting: Laura Knight
Ruby Loftus Screwing a Breech Ring is a 1943 painting by the British painter Laura Knight depicting a young woman, Ruby Loftus (1921–2004), working at an industrial lathe as part of the British war effort in World War II. The painting was commissioned by the War Artists' Advisory Committee, and is now part of the Imperial War Museum's art collection. The painting brought instant fame to Loftus, and has been likened to the American figure of "Rosie the Riveter".
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Image 5
AgustaWestland AW109
Photo: Ikiwaner
An Agusta A109 rescue helicopter leaves Mount Pilatus, near Lucerne, Switzerland, after recovering a patient. Later renamed AgustaWestland AW109, the A109 is a helicopter manufactured by Agusta (now AgustaWestland) of Italy. It is a light-weight, twin-engine, eight-seat multi-purpose craft.
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Wheel
Credit: fir0002
A wheel is a circular component that is intended to rotate on an axial bearing. The wheel is one of the main components of the wheel and axle which is one of the six simple machines.
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Mazda RX-8
Photo credit: Fir0002
The Mazda RX-8 sports car is a front mid-engine, rear-wheel drive four-seat coupé manufactured by Mazda Motor Corporation. It is the successor to the RX-7 and, like its predecessors in the RX range, it is powered by a rotary engine. The RX-8 began North American sales in the 2004 model year.
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Laptop computer
Credit: Mike McGregor
The OLPC XO-1 is an inexpensive subnotebook laptop computer intended to be distributed to children in developing countries.
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David Faiman
Photograph: David Shankbone
David Faiman is an Israeli engineer and physicist recognized for his expertise on solar power. He is the director of the Ben-Gurion National Solar Energy Center and Chairman of the Department of Solar Energy & Environmental Physics at Ben-Gurion University's Jacob Blaustein Institutes for Desert Research in Sde Boker.
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Image 10
Four-stroke cycle
Photo credit: Eric Pierce
The four-stroke cycle of an internal combustion engine is the cycle most commonly used for automotive and industrial purposes today, including cars, trucks, and generators.

The cycle was invented by Nikolaus Otto in 1876, and is also called the Otto cycle. The cycle is characterized by four strokes, or straight movements in a single direction, of the piston.
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Image 11
Kitty Joyner
Photograph: NACA
Kitty Joyner (1916–1993) was an American electrical engineer with the National Advisory Committee for Aeronautics (NACA), and then the National Aeronautics and Space Administration (NASA). She was hired in 1939 as the organization's first woman engineer, shortly after she had become the first woman to graduate from the University of Virginia's engineering program.
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Image 12
Escalator
Credit: Stig Nygaard
An escalator is a moving staircase for carrying people between floors of a building. The device consists of a motor-driven chain of individual, linked steps that move up or down on tracks, allowing the step treads to remain horizontal.
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Overhead power line
Credit: Simon Koopmann
An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances. It consists of one or more conductors suspended by towers or utility poles.
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Image 14
Eiffel Tower
Photo: Benh Lieu Song
The Eiffel Tower as seen from the Champ de Mars. At 324 metres (1,063 ft) tall, the tower, an iron lattice tower, is the tallest building in Paris, the most-visited paid monument in the world, as well as one of the most recognizable structures in the world. Named after its designer, Gustave Eiffel, it was built as an entrance arch for the 1889 Exposition Universelle and has since become the most prominent symbol of both Paris and France.
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Mechanical advantage
Image credit: Prolineserver/Tomia
This diagram of four pulley systems illustrates how increasing the number of pulleys increases the mechanical advantage, making the load easier to lift. MA is the factor by which a mechanism multiplies the force put into it. In this diagram, 100 newtons is required to lift the weight off the ground. Each additional pulley increases the MA such that the four-pulley system only needs 25 newtons to accomplish the same task, but the rope must be pulled four times as far.
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Image 16
SOCATA TBM
Photograph credit: Michael Mainiero
The SOCATA TBM (now Daher TBM) is a family of high-performance single-engine turboprop business and utility light aircraft manufactured by Daher. This SOCATA TBM 900 was photographed in flight during the 2015 EAA AirVenture Oshkosh airshow in the U.S. state of Wisconsin. The aircraft features a Pratt & Whitney Canada PT6A-64 engine, and a five-blade carbon-fiber propeller, which increases performance and decreases cabin noise. In a passenger configuration, the pressurized cabin is typically fitted with highly finished interiors, featuring luxury materials such as leather and wood veneers.
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Image 17
Continuous casting
Photo: Alchemist-hp
A disc of copper made by continuous casting, the process whereby molten metal is solidified into a "semifinished" state for subsequent rolling in the finishing mills. Continuous casting replaced the creation of ingots using stationary moulds. The process allows lower-cost production of metal sections with better quality, due to the inherently lower costs of continuous, standardised production of a product, as well as providing increased control over the process through automation. After casting, this disc was then etched to achieve its final state.
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Image 18
Assut de l'Or Bridge
Photograph: Diego Delso
The Assut de l'Or Bridge is a white single-pylon cable-stayed bridge in the City of Arts and Sciences, Valencia, Spain. Completed in 2008, it was designed by Valencian architect and civil engineer Santiago Calatrava as a variant of his cantilever spar cable-stayed bridge in Seville.
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Image 19
Building implosion
Photo credit: Heptagon
A multiple exposure composite image of the implosion of a chimney at the former brewery "Henninger" in Frankfurt am Main, Germany. This controlled demolition technique involves strategically placing explosive material and timing its detonation so that a structure collapses on itself in a matter of seconds, minimizing the physical damage to its immediate surroundings.
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Image 20
Sukhoi Superjet 100
Photograph: Katsuhiko Tokunaga/SuperJet International
The Sukhoi Superjet 100 is a modern fly-by-wire twin-engine regional jet with 8 to 108 passenger seats. Development began in 2000; the aircraft had its maiden flight on 19 May 2008 and entered commercial service on 21 April 2011. This aircraft is seen flying off the coast of Italy near Sanremo.
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Main topics

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The following are images from various technology-related articles on Wikipedia.

Image 1Alessandro Volta with the first electrical battery. Volta is recognized as an influential inventor. (from Invention)
Image 2Thomas Edison with his second phonograph, photographed by Levin Corbin Handy in Washington, April 1878 (from History of technology)
Image 3Edison electric light bulbs 1879–80 (from History of technology)
Image 4A late Bronze Age sword or dagger blade (from History of technology)
Image 5Pont du Gard in France, a Roman aqueduct (from History of technology)
Image 6Design for a flying machine (c.1488) by da Vinci (from History of technology)
Image 7An axehead made of iron, dating from the Swedish Iron Age (from History of technology)
Image 8Solid-state air batteries
Li-Air composition (from Emerging technologies)
Image 9Newcomen steam engine for pumping mines (from History of technology)
Image 10A rare 1884 photo showing the experimental recording of voice patterns by a photographic process at the Alexander Graham Bell Laboratory in Washington, D.C. Many of their experimental designs panned out in failure. (from Invention)
Image 11Eric M. C. Tigerstedt (1887–1925) was known as a pioneer of sound-on-film technology. Tigerstedt in 1915. (from Invention)
Image 12A water-powered mine hoist used for raising ore, ca. 1556 (from History of technology)
Image 13Walls at Sacsayhuaman (from History of technology)
Image 14Johannes Gutenberg's printing press was voted the most important invention of the second millennium. (from Invention)
Image 15The compartmented water wheel, here its overshot version (from History of technology)
Image 16Agriculture preceded writing in the history of technology. (from History of technology)
Image 17The preserved Rocket (from History of technology)
Image 18Clock from Salisbury Cathedral, ca. 1386 (from History of technology)
Image 19Ford assembly line, 1913. The magneto assembly line was the first. (from History of technology)
Image 20A variety of stone tools (from History of technology)
Image 21The wheel, invented sometime before the 4th millennium BC, is one of the most ubiquitous and important technologies. This detail of the "Standard of Ur", c. 2500 BCE., displays a Sumerian chariot. (from History of technology)
Image 22'BUILD YOUR OWN TELEVISION RECEIVER.' Science and Invention magazine cover, November 1928 (from Invention)
Image 233D printer (from Emerging technologies)
Image 24NASA Fuel cell stack
Direct-methanol cell (from Emerging technologies)
Image 25Top 30 AI patent applicants in 2016 (from Emerging technologies)
Image 26Dome of Florence Cathedral (from History of technology)
Image 27Self-replicating 3D printer (from Emerging technologies)

Did you know (auto-generated) - load new batch

... that Flathead Lake Biological Station can detect invasive aquatic species in real-time using eDNA technology?
... that Peter Corby's electric trouser press used technology designed for Concorde?
... that several science fiction critics praised "Rock Diver", the first short story by American writer Harry Harrison, for its compelling take on technology for passing through matter?
... that Criccieth Castle combined the "latest advances in military technology" with the "haphazard Welsh castle building style"?
... that touch-screen technology, pay-at-the-pump, car phones, and Coca-Cola Cherry were shown at the 1982 World's Fair?
... that it was Caltech experimental physicist Rana X. Adhikari's idea to build a gravitational-wave observatory in India?
... that vehicles in Star Trucker still look like American semi-trucks from the 1970s, despite having technology such as warp drivers and maglocks?
... that Justin Yu, the current Classic Tetris World Champion, is also a cellist in MIT's video game orchestra?