Portal:Technology

 The Technology Portal 

The 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

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...)

Recognized articles -

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

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  Warren Street is a London Underground station, located at the intersection of Tottenham Court Road and Euston Road in the northernmost part of Fitzrovia, and named after adjoining Warren Street. It is served by the Northern and Victoria lines and although it is relatively used less than a number of neighbouring stations, it provides an interchange between these two lines as well as access to University College Hospital.
  
  The station opened in 1907 as Euston Road, and was designed by Leslie Green. It was refurbished in the 1930s by Charles Holden, when escalators were first installed. An extensive refurbishment took place in the late 1960s to accommodate the Victoria line, when it briefly acted as a temporary terminus. It was the first station on the underground to have a dedicated Wi-Fi surface in 2012. (Full article...)
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  Delaware Route 141 (DE 141) is a state highway that serves as a western bypass of Wilmington, Delaware. Its southern terminus is at DE 9 and DE 273 in New Castle and its northern terminus is an interchange with U.S. Route 202 (US 202) and DE 261 near Fairfax. The route heads north from DE 9 and DE 273 on four-lane divided Basin Road, becoming concurrent with US 202 at an interchange with US 13/US 40 in Wilmington Manor, and passes to the east of Wilmington Airport. The highway becomes a freeway and reaches an interchange with Interstate 95 (I-95) and I-295, at which point US 202 splits from DE 141. The DE 141 freeway continues north through Newport to Prices Corner. Here, the freeway segment ends and DE 141 continues northeast as a surface road, with another brief freeway segment in Greenville. The route heads east across the Brandywine Creek on the Tyler-McConnell Bridge and continues to US 202 and DE 261.
  
  What is now DE 141 between New Castle and Newport was originally designated as part of DE 41 in the 1930s. DE 141 was designated as a surface bypass of Wilmington between New Castle and US 202 north of Wilmington in the 1950s, running concurrent with DE 41 south of Newport. DE 41 was removed from DE 141 by 1971. In the 1960s, DE 141 was proposed to be upgraded to a freeway. Construction on the freeway segments between Newport and Prices Corner and in Greenville began in the 1970s and was completed around 1980. In the 1990s, several improvements were planned for DE 141 north of Prices Corner, including grade separation at Rockland Road completed in 1997 and relocation of the northern terminus to its current location at an interchange with US 202 and DE 261 finished in 2007. (Full article...)
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  M-134 is an east–west state trunkline highway in the Upper Peninsula (UP) of the US state of Michigan. It connects Interstate 75 (I-75) north of St. Ignace with the communities of Hessel, Cedarville and De Tour Village along Lake Huron. East of De Tour, the highway crosses the De Tour Passage on a ferry to run south of the community of Drummond on Drummond Island. It is one of only three state trunklines in Michigan on islands; the others are M-154 on Harsens Island and M-185 on Mackinac Island. M-134 is also one of only two highways to utilize a ferry in Michigan; the other is US Highway 10 (US 10) which crosses Lake Michigan from Manitowoc, Wisconsin, to Ludington. Most of the mainland portion of M-134 is also part of the Lake Huron Circle Tour, and since 2015, it has been a Pure Michigan Byway under the name M-134 North Huron Byway.
  
  A separate highway bore the M-134 designation in the Lower Peninsula from the late 1920s to the late 1930s. The current highway's immediate predecessors were included in the original M-4 in the state. That designation was renumbered to the current M-134 moniker in 1939. Since the trunkline number was finalized, it was extended eastward to end south of Goetzville in the 1950s, with a further extension to De Tour in the 1950s. The western section was moved closer to the lakeshore in the 1960s. The last change came when M-134 was extended to Drummond Island in 1989. (Full article...)
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  M-18 is a north–south state trunkline highway in the Lower Peninsula of the US state of Michigan. It runs for 77.530 miles (124.772 km) through the central region of the state connecting US Highway 10 (US 10) near North Bradley with M-72 in rural Crawford County near the community of Luzerne. In between, the roadway connects several smaller communities while running through woodlands in both state and national forest areas. Two segments of M-18 run along sections of county boundaries, and one part of the highway forms a component of the business loop for the village of Roscommon.
  
  When the highway was first designated in the late 1910s, it extended farther south than it does today and ended well short of its current northern terminus. The southern end was added to another state highway, truncating M-18's length to roughly its current southern terminus in 1926. The northern end was also simultaneously extended for the first time with these revisions to the highway's routing. In the 1940s, the northern extension was reversed and then reinstated. M-18's course was last changed with the opening of three different freeways in the area in the 1960s and 1970s. The last extension in 1973 supplanted the M-144 designation from Roscommon north to Luzerne. (Full article...)
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  King's Highway 21, commonly referred to as Highway 21, is a provincially maintained highway in the Canadian province of Ontario that begins at Highway 402 midway between Sarnia and London and ends at Highway 6, Highway 10 and Highway 26 in Owen Sound. The roadway is referred to as the Bluewater Highway because it remains very close to the eastern shoreline of Lake Huron.
  
  Highway 21 was first designated by the Department of Highways (DHO) between Highway 3 and Highway 7 in mid-1927 and extended to Goderich in 1934. A year later, a final extension completed the route to Owen Sound. In 1997 and 1998, the portion of the route south of Highway 402 was transferred to the counties in which it laid. This segment is also known as Oil Heritage Road. (Full article...)
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  New York State Route 287 (NY 287) was a state highway within the town of Alexandria in Jefferson County, New York, in the United States. The route served as a connector between NY 283 southeast of Alexandria Bay in the hamlet of Browns Corners and NY 37 in the hamlet of Redwood. It was 3 miles (5 km) long and passed through open fields for most of its length.
  
  NY 287 was originally designated as part of NY 3 in 1924. In 1930, NY 3 was rerouted east of Watertown to follow a more southerly routing across the North Country. The Browns Corners–Redwood portion of its former alignment was redesignated as New York State Route 26B by the following year. NY 26, NY 26B's parent route, was truncated southward on July 1, 1977; as a result, NY 26B was redesignated as NY 287. In 1979, ownership and maintenance of NY 287 was transferred from the state of New York to Jefferson County as part of a highway maintenance swap between the two levels of government. The route is now designated as County Route 192 (CR 192). (Full article...)
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  New York State Route 16 (NY 16) is a state highway in western New York, in the United States. It runs from the Pennsylvania state line, where it is one of the highest highways in the state in elevation, to downtown Buffalo. NY 16 is a major route through Erie County, despite the construction of the paralleling NY 400 freeway from East Aurora. In Cattaraugus County it also plays an important role, serving as the major connection from Olean to the Southern Tier Expressway (Interstate 86 or I-86 and NY 17). Between those two areas, and indeed for much of its length, it is a two-lane rural road.
  
  NY 16 initially ended in Olean when it was assigned in 1924. It was extended south to the Pennsylvania state line in the early 1930s; however, it initially overlapped NY 17 east to Portville, where it connected to Pennsylvania by way of modern NY 305. NY 16's current alignment south of Olean was originally designated as New York State Route 16A around this time. NY 16 was rerouted to follow the routing of NY 16A south of Olean in August 1962. (Full article...)

Selected picture

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  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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  Thermoplastic-sheathed cable

  Photograph credit: Petar Milošević

  A thermoplastic-sheathed cable consists of a toughened outer thermoplastic sheath of polyvinyl chloride, covering one or more individual annealed copper conductors. Each of the current-carrying conductors in the "core" is insulated by an individual thermoplastic sheath, coloured to indicate the purpose of the conductor concerned. The protective earth conductor may also be covered with insulation, although, in some countries, this conductor may be left as bare copper. The type of thermoplastic, the dimensions of the conductors and the colour of their individual insulation are specified by the regulatory bodies in the various countries concerned.
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  John Herschel

  Photograph: Julia Margaret Cameron; restoration: Adam Cuerden

  John Herschel was an English mathematician, astronomer, chemist, inventor, and experimental photographer. He named seven moons of Saturn and four moons of Uranus, invented the cyanotype and actinometer, and wrote extensively on topics including meteorology, physical geography and the telescope.
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  Bucket-wheel excavators

  Photograph: Raimond Spekking

  Bucket-wheel excavators (BWEs) are heavy equipment used in surface mining. The primary function of a BWE is to act as a continuous digging machine in large-scale open pit mining operations. These BWEs were photographed at the Garzweiler surface mine in Germany.
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  Caliper

  Image credit: Joaquim Alves Gaspar

  An animation showing how to use a vernier caliper, which is a caliper that uses a vernier scale to interpolate linear measurements. Vernier calipers can measure internal and external dimensions using, respectively, the uppermost and lower jaws, and also depths, using the depth probe (located at the right end). In this example, the first two digits (2.4) are decided by the location of the zero of the vernier scale in the centimeter scale, and the last digit (0.07), by the first line of the vernier scale that exactly matches a line of the centimeter scale above.
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  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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  Semi-submersible

  Photo: Agência Brasil

  The semi-submersible oil platform P-51, operated by Brazilian energy company Petrobras, being positioned by tugboats. Semisubs sit on pontoons located under the ocean surface, with the operating deck atop columns, above the sea level. In this manner, they are relatively protected from wave action.
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  George Washington Carver

  Photo: Arthur Rothstein; Restoration: Lise Broer

  A portrait of George Washington Carver, American scientist, botanist, educator and inventor, from 1942. Much of Carver's fame is based on his research into and promotion of alternative crops to cotton, such as peanuts and sweet potatoes. In addition to his work on agricultural extension education for purposes of advocacy of sustainable agriculture and appreciation of plants and nature, Carver's important accomplishments also included improvement of racial relations, mentoring children, poetry, painting, and religion. One of his most important roles was in undermining, through the fame of his achievements and many talents, the widespread stereotype of the time that the black race was intellectually inferior to the white race.
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  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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  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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  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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  Brusio spiral viaduct

  Photo: David Gubler

  The Bernina Express passing over the Brusio spiral viaduct. Located near Brusio, Graubünden, Switzerland, the single track nine-arched stone spiral railway viaduct was opened in 1908. It is part of the World Heritage-listed Bernina railway.
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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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  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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  Curiosity (rover)

  Photograph: NASA

  A 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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  Flat-four engine

  Photograph: ULPower Aero Engines

  The ULPower UL260i, a flat-four engine produced by ULPower Aero Engines of Belgium. Flat-four engines are flat engines with four cylinders arranged horizontally in two banks of two cylinders on each side of a central crankcase; they can be used in cars, motorcycles, or aircraft. This type of engine tends to be well-balanced and have efficient cooling, but is expensive to manufacture and considerably wider than other engines.
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  Blender (software)

  Image credit: Michael Otto

  A pastoral scene of a lone house, composed using Blender, an open source 3D computer graphics software. Blender can be used for a number of applications and is available for a wide variety of operating systems.
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  Trojan Room coffee pot

  Picture: Quentin Stafford-Fraser

  The Trojan Room coffee pot was the inspiration for the world's first webcam. The coffee pot was located in the corridor just outside the so-called Trojan Room within the old Computer Laboratory of the University of Cambridge. The webcam was created in 1991 to help people working in other parts of the building avoid pointless trips to the coffee pot by providing, on the user's desktop computer, a live 128×128 pixel greyscale picture of the state of the coffee pot. The webcam was shut down on 22 August 2001, following the Computer Laboratory's move to the William Gates Building.
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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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  Stockwell Garage

  Photograph: David Iliff

  An 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.

Main topics

General images -

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

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  Self-replicating 3D printer (from Emerging technologies)
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  Johannes Gutenberg's printing press was voted the most important invention of the second millennium. (from Invention)
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  Clock from Salisbury Cathedral, ca. 1386 (from History of technology)
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  Walls at Sacsayhuaman (from History of technology)
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  Top 30 AI patent applicants in 2016 (from Emerging technologies)
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  Thomas Edison with his second phonograph, photographed by Levin Corbin Handy in Washington, April 1878 (from History of technology)
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  Alessandro Volta with the first electrical battery. Volta is recognized as an influential inventor. (from Invention)
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  A 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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  Dome of Florence Cathedral (from History of technology)
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  Pont du Gard in France, a Roman aqueduct (from History of technology)
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  The 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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  Design for a flying machine (c.1488) by da Vinci (from History of technology)
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  Solid-state air batteries
  Li-Air composition (from Emerging technologies)
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  NASA Fuel cell stack
  Direct-methanol cell (from Emerging technologies)
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  A variety of stone tools (from History of technology)
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  'BUILD YOUR OWN TELEVISION RECEIVER.' Science and Invention magazine cover, November 1928 (from Invention)
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  An axehead made of iron, dating from the Swedish Iron Age (from History of technology)
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  Edison electric light bulbs 1879–80 (from History of technology)
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  The preserved Rocket (from History of technology)
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  A water-powered mine hoist used for raising ore, ca. 1556 (from History of technology)
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  A late Bronze Age sword or dagger blade (from History of technology)
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  Agriculture preceded writing in the history of technology. (from History of technology)
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  Newcomen steam engine for pumping mines (from History of technology)
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  3D printer (from Emerging technologies)
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  Ford assembly line, 1913. The magneto assembly line was the first. (from History of technology)
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  The compartmented water wheel, here its overshot version (from History of technology)
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  Eric M. C. Tigerstedt (1887–1925) was known as a pioneer of sound-on-film technology. Tigerstedt in 1915. (from Invention)

Did you know (auto-generated) -

• ... that OPTi Inc. won a patent suit against Apple for unauthorized use of "predictive snooping" technology?
• ... that Henry E. Sigerist felt "depressed" after reading A History of Science, Technology, and Philosophy in the 16th and 17th Centuries?
• ... 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 Peter Corby's electric trouser press used technology designed for Concorde?
• ... that touch-screen technology, pay-at-the-pump, car phones, and Coca-Cola Cherry were shown at the 1982 World's Fair?
• ... that ice XVII (structure shown) potentially has a use in green technology as a medium for storing hydrogen?
• ... that Criccieth Castle combined the "latest advances in military technology" with the "haphazard Welsh castle building style"?
• ... 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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  Musk in 2018

  
  Elon Reeve Musk FRS (/ˈiːlɒn/; born June 28, 1971) is a businessman known for his key roles in the space company SpaceX and the automotive company Tesla, Inc. His other involvements include ownership of X Corp., the company that operates the social media platform X (formerly Twitter), and his role in the founding of the Boring Company, xAI, Neuralink, and OpenAI. Musk is the wealthiest individual in the world; as of December 2024, Forbes estimates his net worth to be US$432 billion. (Full article...)
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  YouTube search results

  
  YouTube is an American social media and online video sharing platform owned by Google. YouTube was founded 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. In January 2024, YouTube had more than 2.7 billion monthly active users, who collectively watched more than one billion hours of videos every day. As of May 2019, videos were being uploaded to the platform at a rate of more than 500 hours of content per minute, and as of 2023, there were approximately 14 billion videos in total. (Full article...)
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  ChatGPT is a generative artificial intelligence chatbot developed by OpenAI and launched in 2022. It is currently based on the GPT-4o large language model (LLM). ChatGPT can generate human-like conversational responses and enables users to refine and steer a conversation towards a desired length, format, style, level of detail, and language. It is credited with accelerating the AI boom, which has led to ongoing rapid investment in and public attention to the field of artificial intelligence (AI). Some observers have raised concern about the potential of ChatGPT and similar programs to displace human intelligence, enable plagiarism, or fuel misinformation. (Full article...)
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  Current logo introduced in December 2023

  
  Bluesky is a microblogging social media service. Similar to Twitter, users can share short text messages, images, and videos in short posts colloquially known as "skeets". It is owned by Bluesky Social PBC, a public benefit corporation based in the United States. (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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  Aerial view of the Microsoft Redmond campus

  
  Microsoft Corporation is an American multinational technology conglomerate headquartered in Redmond, Washington. Founded in 1975, the company became highly influential in the rise of personal computers through software like Windows, and the company has since expanded to Internet services, cloud computing, video gaming and other fields. Microsoft is the largest software maker, one of the most valuable public U.S. companies, and one of the most valuable brands globally. (Full article...)
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  Facebook is a social media and social networking service owned by 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. As of December 2022, Facebook claimed almost 3 billion monthly active users. As of November 2024, Facebook ranked as the third-most-visited website in the world, with 23% of its traffic coming from the United States. It was the most downloaded mobile app of the 2010s. (Full article...)
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  The Google logo used since 2015

  
  Google LLC (/ˈɡuːɡəl/ , GOO-gəl) is an American-based 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...)
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  Logo used since 2014

  
  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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  Artificial 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 that enable machines to perceive their environment and use 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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See also: 2024 in science and technology

December 4, 2024 – 2024 Cuba blackouts

Another round of blackouts in Cuba leave millions of households without power. The energy ministry says that it is prioritizing restoring electricity to hospitals and water pumping facilities. (Reuters)

November 16, 2024 – 2024 Wuxi stabbing attack

Eight people are killed and 17 others are injured in a stabbing spree at the Wuxi Institute of Technology in Yixing, Jiangsu, China. The suspect, a 21-year-old student, is arrested. (CNN) (Reuters)

September 23, 2024 –

Swedish lithium-ion technology developer Northvolt announces revised company operational scopes and its intention to layoff 1,600 workers in the country. (CBC)

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