Portal:Technology
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Technology is the application of conceptual knowledge for achieving 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 prehistoric times, followed by the control of fire, which contributed to the growth of the human brain and the development of language during the Ice Age. 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...)
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Image 1
The Sutphin Boulevard station is a local station on the IND Queens Boulevard Line of the New York City Subway. Located at Sutphin Boulevard and Hillside Avenue in Jamaica, Queens, it is served by the F train at all times, the <F> train during rush hours in the reverse peak direction, and a few rush-hour E trains to Jamaica–179th Street during p.m. rush hours.
This station opened on April 24, 1937 as part of an extension of the Independent Subway System's Queens Boulevard Line. In 1953, the platforms at the station were extended to accommodate 11-car trains. Ridership at this station decreased sharply after the opening of the Archer Avenue lines in 1988. This had been the closest subway station to the Long Island Rail Road's Jamaica station after the removal of a portion of the Jamaica Elevated in 1977. (Full article...) -
Image 2Big Stan is a vehicle-mounted drill rig built in 1986 by Anderson Drilling. The rig has been used on a number of construction projects in which conventional, smaller drilling rigs were unable to be used, particularly when projects call for drilling into hard soil. Notably, Big Stan was used in the construction of the First National Bank Tower in Omaha, the Benicia-Martinez bridge near San Francisco, and on expansions to the I-15/215 Beltway in Las Vegas. The drill rig was featured on Discovery Channel’s show “Monster Machines” in 2007.
Big Stan features a two-piece design, significantly lowering the time and manpower needed to assemble it compared to contemporary rigs. Big Stan employs a screw conveyor capable of exerting 534,000 pound-feet (724,000 N⋅m) of torque and 75,000 pounds (34,000 kg) of downward force to a maximum depth of 260 feet (79 m). Its drill bit is capable of moving 5 cubic yards (3.8 m3) of soil per rotation and its drill bucket is able to move up to 8 cubic yards (6.1 m3) of soil per rotation. The rig has been estimated as one of, if not the largest, vehicle-mounted drilling rigs in the world. (Full article...) -
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Strensham services is a motorway service station on the M5 in Worcestershire, England. It is operated by Roadchef. In August 2011, it was rated as 4 stars (southbound) and 3 stars (northbound) by quality assessors at Visit England.
Unusually for a motorway service station, the two sites are about 0.5 miles (0.80 km) apart due to the proximity of junction 8 (for the M50 motorway). The services opened with the motorway in 1962 and have undergone many developments over time, largely due to the evolution of the motorway, which at the time of its opening ran from Birmingham to Strensham but now runs to Exeter some 100 miles (160 km) southwards. It was the first service station on the M5. The service station is also an operational base for the Midlands Air Ambulance. (Full article...) -
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The Ringerike Line (Norwegian: Ringeriksbanen or Ringeriksbana) is a proposed 40-kilometre (25 mi) extension of the Bergen Line from Jong, Sandvika to Hønefoss, Norway. In 2022, the project was postponed; the government has no commitment to any timeframe (as of Q4 2022).
The proposed line would reduce travel from Oslo to Bergen by 60 kilometres (37 mi) and 50 minutes. Currently trains from the Bergen Line to Oslo must run via Drammen on the Randsfjord Line and the Drammen Line, or via Roa on the Roa–Hønefoss Line and the Gjøvik Line. (Full article...) -
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Skyline is a light metro system in the City and County of Honolulu on the island of Oʻahu, in the state of Hawaiʻi. Phase 1 of the project opened June 30, 2023 and lies entirely outside of Urban Honolulu, linking East Kapolei (on the ʻEwa Plain) and Aloha Stadium. Phase 2, connecting to Pearl Harbor and Daniel K. Inouye International Airport before reaching Middle Street, is anticipated to open in mid-2025. The final phase, continuing the line across Urban Honolulu to Downtown, is due to open in 2031. Its construction constitutes the largest public works project in Hawaiʻi's history.
The 18.9-mile (30.4 km), automated fixed-guideway line was planned, designed, and constructed by the Honolulu Authority for Rapid Transportation (HART), a semi-autonomous government agency. Hitachi Rail, who also built the railcars used on the line, operates Skyline for the Honolulu Department of Transportation Services (which also manages the region's TheBus service). The almost entirely elevated line is the first large-scale, publicly run metro in the United States to feature platform screen doors and driverless trains. In 2023, the line had a monthly ridership of 614,800, or about 2,900 per weekday as of the fourth quarter of 2023. (Full article...) -
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The 72nd Street station is an express station on the IRT Broadway–Seventh Avenue Line of the New York City Subway, located at the intersection of Broadway, 72nd Street, and Amsterdam Avenue on the Upper West Side of Manhattan. It is served by the 1, 2, and 3 trains at all times.
The 72nd Street station was constructed for the Interborough Rapid Transit Company (IRT) as part of the city's first subway line, which was approved in 1900. Construction of the line segment that includes the 72nd Street station began on August 22 of the same year. The station opened on October 27, 1904, as one of the original 28 stations of the New York City Subway. The 72nd Street station's platforms were lengthened in 1960 as part of an improvement project along the Broadway–Seventh Avenue Line. The station's only exit was originally through a head house in the median of Broadway south of 72nd Street. In 2002, the station was renovated and a second head house was built north of 72nd Street, within an expansion of Verdi Square. (Full article...) -
Image 7Lead is a chemical element; it has symbol Pb (from Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is toxic, even in small amounts, especially to children.
Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases, and it tends to form covalent bonds. Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited to organolead compounds. Like the lighter members of the group, lead tends to bond with itself; it can form chains and polyhedral structures. (Full article...)
Selected picture
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Image 1A 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 2Photograph: NACAKitty 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 3Credit: Mike McGregorThe OLPC XO-1 is an inexpensive subnotebook laptop computer intended to be distributed to children in developing countries.
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Image 4The GameCube is a sixth generation video game console released by Nintendo beginning in 2001. Meant as a successor to the Nintendo 64, the GameCube sold approximately 22 million units worldwide. It was the third most-successful console of its generation, behind Sony's PlayStation 2 and Microsoft's Xbox. The GameCube was succeeded by the Wii in 2006.
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Image 5Photograph credit: Matt Steiner and Kees08A 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. -
Image 6A 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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Image 7Photograph credit: Dllu
The N700 Series Shinkansen is a Japanese Shinkansen high-speed train with tilting capability developed jointly by JR Central and JR West. It has been used on the Tokaido and San'yō Shinkansen lines since 2007. This photograph shows the train travelling at approximately 300 km/h through Himeji Station, and was captured with a line scan camera using strip photography. -
Image 8Diagram: H Padleckas and Ju gatsu mikkaA diagram showing a side and underside view of an 18-wheeler semi-trailer truck with an enclosed cargo space. The underside view shows the arrangement of the wheels, and in blue, the axles, drive shaft, and differentials.
The numbered parts are:
'"`UNIQ--templatestyles-00000018-QINU`"'
#tractor unit
#semi-trailer (detachable)
#engine compartment
#cabin
#sleeper (not present in all trucks)
#air dam
#fuel tanks
#fifth-wheel coupling
#enclosed cargo space
#landing gear (legs for when semi-trailer is detached)
#tandem axles -
Image 9Credit: Berthold WernerA 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 10Photograph: David IliffAn interior view of Stockwell Garage, a large bus garage in Stockwell, London, designed by Adie, Button and Partners and opened in 1952. The 393-foot-long (120 m) roof structure, seen here, is supported by ten very shallow "two-hinged" arched ribs, between which are cantilevered barrel vaults topped by large skylights. The garage, which could originally hold 200 buses, has been a Grade II* Listed Building since 1988.
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Image 11Image credit: Prolineserver/TomiaThis 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 13The Australia Telescope Compact Array is a radio telescope operated by the Commonwealth Scientific and Industrial Research Organisation (CSIRO) at the Paul Wild Observatory, 25 km (16 mi) west of the town of Narrabri in New South Wales, Australia. The telescope is an array of six identical dishes each 22 metres (72 ft) in diameter, which commonly operate in aperture synthesis mode to produce images from radio waves. Five of the dishes can be moved along a 3-kilometre (2 mi) railway track; the sixth is situated three kilometres west of the end of the main track. Each dish weighs about 270 tonnes (270 long tons; 300 short tons).
This photograph, showing five of the Australia Telescope Compact Array's dishes, was taken around 1984, in the late phase of the construction process. It is a long-exposure photograph taken in darkness in the late evening; during the exposure, the photographer, John Masterson, walked around the dishes firing off over 130 flashes using a hand-held flash gun. -
Image 14Photograph: NASAA self-portrait by the Mars rover Curiosity on October 31, 2012. The mosaic is stitched from a set of 55 images taken by the Mars Hand Lens Imager at "Rocknest," the spot in Gale crater where the mission's first scoop sampling took place. Self-portraits such as this help NASA document the state of the rover and track changes, such as dust accumulation and wheel wear.
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Image 15Photo credit: Hans HillewaertWind turbines belonging to the Thorntonbank Wind Farm located in the North Sea, 28 km (17 mi) off the coast of Belgium. Electricity generation started in early 2009, with an initial capacity of 30 MW, and that number is expected to rise to 300 MW by 2015. A 37 km (23 mi) 150 kV undersea cable connects the wind farm to the shore.
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Image 16Image credit: Lewis HineA structural worker bolts beams on the framework during the construction of the Empire State Building in New York City. The 1,250-foot (380 m) building opened on May 1, 1931, at the time the tallest building in the world, overtaking the Chrysler Building (seen to the right), which had just been completed the year before. The addition of a pinnacle and antennas later increased its overall height to 1,472 feet (449 m).
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Image 17An 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 18Daguerreotype credit: UnknownA daguerreotype from the 1850s of the Ben Campbell, a paddle steamer—a ship or boat driven by a steam engine that uses one or more paddle wheels to develop thrust for propulsion. The paddle wheel was the first form of mechanical propulsion for a boat, but has now been almost entirely superseded by more modern forms of marine propulsion.
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Image 19Photograph: David GublerThe Wiesen Viaduct is a single-track railway viaduct (concrete blocks with dimension stone coverage) which spans the Landwasser southwest of the hamlet of Wiesen, Switzerland. Designed by Henning Friedrich, then the chief engineer of the Rhaetian Railway, it was built between 1906 and 1909 by the contractor G. Marasi (Westermann & Cie, Zürich) under the supervision of P. Salaz and Hans Studer (RhB). The Rhaetian Railway still owns and uses the viaduct today for regular service with 29 passenger trains per day. An important element of the Davos–Filisur railway, the viaduct is 88.9 metres (292 ft) high, 210 metres (690 ft) long, and has a main span of 55 metres (180 ft). In 1926, the viaduct was the inspiration for Ernst Ludwig Kirchner's painting Brücke bei Wiesen.
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Image 20Image credit: Søren Peo PedersenTwo TRS connectors (also known as jack plugs or phone plugs), a common audio connector. They are cylindrical in shape, with two or more contacts. Originally invented for use in telephone switchboards, jack plugs are still widely used, both in the original ¼-inch (6.3 mm) size and in miniaturized versions. The top plug in this image is for stereo connections, while the bottom is for mono.
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General images - load new batch
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Image 3A variety of stone tools (from History of technology)
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Image 4The 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)
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Image 5Ford assembly line, 1913. The magneto assembly line was the first. (from History of technology)
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Image 6Edison electric light bulbs 1879–80 (from History of technology)
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Image 7Eric M. C. Tigerstedt (1887–1925) was known as a pioneer of sound-on-film technology. Tigerstedt in 1915. (from Invention)
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Image 10Thomas Edison with his second phonograph, photographed by Levin Corbin Handy in Washington, April 1878 (from History of technology)
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Image 113D printer (from Emerging technologies)
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Image 12Agriculture preceded writing in the history of technology. (from History of technology)
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Image 14Top 30 AI patent applicants in 2016 (from Emerging technologies)
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Image 16Newcomen steam engine for pumping mines (from History of technology)
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Image 17Walls at Sacsayhuaman (from History of technology)
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Image 20The preserved Rocket (from History of technology)
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Image 21A 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)
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Image 22'BUILD YOUR OWN TELEVISION RECEIVER.' Science and Invention magazine cover, November 1928 (from Invention)
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Image 25Self-replicating 3D printer (from Emerging technologies)
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Image 26Alessandro Volta with the first electrical battery. Volta is recognized as an influential inventor. (from Invention)
Did you know (auto-generated) - load new batch
- ... that ice XVII (structure shown) potentially has a use in green technology as a medium for storing hydrogen?
- ... that Henry E. Sigerist felt "depressed" after reading A History of Science, Technology, and Philosophy in the 16th and 17th Centuries?
- ... that Suresh Jadhav led the development of the COVID-19 vaccine marketed as Covishield?
- ... that touch-screen technology, pay-at-the-pump, car phones, and Coca-Cola Cherry were shown at the 1982 World's Fair?
- ... that Małgorzata Kalinowska-Iszkowska was awarded a Polish Gold Cross of Merit for her work in information technology?
- ... that when Chorus Systèmes SA was founded in 1986, French technology start-up companies were rare?
- ... 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 it was Caltech experimental physicist Rana X. Adhikari's idea to build a gravitational-wave observatory in India?
Top 10 WikiProject Technology popular articles of the month
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YouTube is an American online video sharing platform owned by Google. Accessible worldwide, it was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim, three former employees of PayPal. Headquartered in San Bruno, California, United States, it is the second most visited website in the world, after Google Search. YouTube has more than 2.5 billion monthly users, who collectively watch more than one billion hours of videos every day. , videos were being uploaded to the platform at a rate of more than 500 hours of content per minute, and as of 2021, there were approximately 14 billion videos in total. (Full article...) -
Image 2Facebook is a social media and social networking service owned by the American technology conglomerate Meta. Created in 2004 by Mark Zuckerberg with four other Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes, its name derives from the face book directories often given to American university students. Membership was initially limited to Harvard students, gradually expanding to other North American universities. Since 2006, Facebook allows everyone to register from 13 years old, except in the case of a handful of nations, where the age limit is 14 years. , Facebook claimed almost 3 billion monthly active users. As of October 2023, Facebook ranked as the 3rd most visited website in the world, with 22.56% of its traffic coming from the United States. It was the most downloaded mobile app of the 2010s. (Full article...)
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ChatGPT is a chatbot developed by OpenAI and launched on November 30, 2022. Based on large language models (LLMs), it enables users to refine and steer a conversation towards a desired length, format, style, level of detail, and language. Successive user prompts and replies are considered at each conversation stage as context. (Full article...) -
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WhatsApp (officially WhatsApp Messenger) is an instant messaging (IM) and voice-over-IP (VoIP) service owned by technology conglomerate Meta. It allows users to send text, voice messages and video messages, make voice and video calls, and share images, documents, user locations, and other content. WhatsApp's client application runs on mobile devices, and can be accessed from computers. The service requires a cellular mobile telephone number to sign up. In January 2018, WhatsApp released a standalone business app called WhatsApp Business which can communicate with the standard WhatsApp client. (Full article...) -
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Elon Reeve Musk (/ˈiːlɒn/ EE-lon; born June 28, 1971) is a businessman and investor. He is the founder, chairman, CEO, and CTO of SpaceX; angel investor, CEO, product architect, and former chairman of Tesla, Inc.; owner, executive chairman, and CTO of X Corp.; founder of the Boring Company and xAI; co-founder of Neuralink and OpenAI; and president of the Musk Foundation. He is one of the wealthiest people in the world; , Forbes estimates his net worth to be $178 billion. (Full article...) -
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X, commonly referred to by its former name Twitter, is a social media website based in the United States. With over 500 million users, it is one of the world's largest social networks and the fifth-most visited website in the world. Users can share text messages, images, and videos through posts (originally called "tweets"). X also includes direct messaging, video and audio calling, bookmarks, lists and communities, and Spaces, a social audio feature. Users can vote on context added by approved users using the Community Notes feature. (Full article...) -
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Google LLC (/ˈɡuːɡəl/ ⓘ, GOO-ghəl) is an American multinational corporation and technology company focusing on online advertising, search engine technology, cloud computing, computer software, quantum computing, e-commerce, consumer electronics, and artificial intelligence (AI). It has been referred to as "the most powerful company in the world" and is one of the world's most valuable brands due to its market dominance, data collection, and technological advantages in the field of AI. Google's parent company, Alphabet Inc. is one of the five Big Tech companies, alongside Amazon, Apple, Meta, and Microsoft. (Full article...) -
Image 8Artificial intelligence (AI), in its broadest sense, is intelligence exhibited by machines, particularly computer systems. It is a field of research in computer science that develops and studies methods and software which enable machines to perceive their environment and uses learning and intelligence to take actions that maximize their chances of achieving defined goals. Such machines may be called AIs. (Full article...)
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Netflix is an American subscription video on-demand over-the-top streaming service. The service primarily distributes original and acquired films and television shows from various genres, and it is available internationally in multiple languages. (Full article...) -
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Samuel Benjamin Bankman-Fried (born March 5, 1992), commonly known as SBF, is an American entrepreneur who was convicted of fraud and related crimes in November 2023. Bankman-Fried founded the FTX cryptocurrency exchange and was celebrated as a "poster boy" for crypto. At the peak of his net worth, he was ranked the 41st-richest American in the Forbes 400. (Full article...)
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- February 27, 2024 –
- Japanese technology company Sony announces it will cut 900 jobs across its global workforce and has also proposed the closure of London Studio as part of the restructuring. (Sony Interactive Entertainment press release)
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